Esfuerzo Quinton MS Q-STRESS - INGLES
Esfuerzo Quinton MS Q-STRESS - INGLES
Esfuerzo Quinton MS Q-STRESS - INGLES
80, 86 Y 89 70-00281-01 B
QUINTON® Q-STRESS®
VERSION 4.0
70-00281-01 B
Information in this document is subject to change without notice. Names and data used in
the examples are fictitious unless otherwise noted.
CE Mark Declaration
The CE marking of conformity indicates that the device having this symbol on its
immediate label meets the applicable requirements of the European Medical Device
Directive.
Trademark Information
Cardiac Science, the Shielded Heart logo, Quinton, Burdick, Q-Stress, and HeartStride
are trademarks of Cardiac Science Corporation. All other product and company names are
trademarks or registered trademarks of their respective companies.
Copyright © 2008 Cardiac Science Corporation. All Rights Reserved.
Contents
Chapter 1: Safety
Indications for Use................................................................................. 1-2
Safety Definitions .................................................................................. 1-3
General Safety Statements...................................................................... 1-4
Symbols and Labels................................................................................ 1-5
AHA to IEC Equivalents ....................................................................... 1-7
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Contents
70-00281-01 B Contents v
Contents
vi Contents 70-00281-01 B
Contents
Appendix A: Specifications
System Specifications .............................................................................A-2
Ventilation Clearances.....................................................................A-5
Fuse Replacement............................................................................A-5
BTU Output ...................................................................................A-5
Q-Stress Customer-supplied Computer Specifications ...........................A-6
Uninterruptible Power Supply (UPS) Recommendations.......................A-7
EMC Guidance and Manufacturer’s Declaration ...................................A-9
Electromagnetic Emissions ..............................................................A-9
Recommended Separation Distances ...............................................A-9
Electronic Immunity .....................................................................A-10
Treadmill/Ergometer ...........................................................................A-13
70-00281-01 B Contents ix
Contents
x Contents 70-00281-01 B
1 Safety
Chapter contents
◆ Indications for Use 1-2
◆ Safety Definitions 1-3
◆ General Safety Statements 1-4
◆ Symbols and Labels 1-5
◆ AHA to IEC Equivalents 1-7
This chapter provides Indications for Use and overall safety requirements for the Q-Stress
system. Become familiar with the information in this chapter before operating Q-Stress.
Safety Definitions
The following types of safety statements are used in this manual.
WARNING
! Indicates that if you do not follow directions correctly injury can occur to the patient or
operator.
Caution
! Indicates that if you do not follow directions correctly the equipment or software may not
operate properly or damage can occur to the equipment or software.
! Before operating the Q-Stress system, become familiar with all safety information,
procedures, and system features listed in this manual.
! All system components must be inspected and repaired if necessary per the maintenance
schedule listed in this manual.
! This device is not intended as a patient monitor and may not indicate patient distress. All
patient testing must be performed by trained operators under the supervision of a
physician.
WARNING. Misdiagnosis.
! U.S. Federal law restricts this device to sale by or on the order of a physician. The Q-Stress
system must only be used by qualified operators and any results interpreted by a qualified
diagnostician.
! This instrument is not approved for use and must not be operated in the presence of
flammable anesthetics.
! The Stress cart should be used in a single location to store the system hardware and
accessories. It is not intended for mobile use. If the cart is moved while loaded with
equipment, the cart might tip, resulting in damaged equipment.
Hz Hertz V Volts
Timed fuse
T
(slo-blo)
AHA IEC
V1 Red C1 Red
V2 Yellow C2 Yellow
V3 Green C3 Green
V4 Blue C4 Brown
V5 Orange C5 Black
V6 Violet C6 Violet
RA White R Red
LA Black L Yellow
RL Green N Black
LL Red F Green
Chapter contents
◆ Before the Test 2-2
◆ Rest Phase 2-3
◆ Warm-up Phase 2-4
◆ Exercise Phase 2-5
◆ Recovery Phase 2-6
◆ Review Phase 2-7
! This Quick Start guide is intended for reference only and is not intended for use by untrained
operators. Before using the Q-Stress system, become familiar with proper operation
procedures and all safety information in this manual.
4. Click the New Patient icon to enter patient information. Make sure to select the
correct procedure and protocol. (See Adding a Patient Entry on page 6-2 for details.)
5. Attach the electrodes to the patient. Click the Impedance Check icon to perform an
Impedance Check. (See Connection Test on page 5-2 for details.)
Rest Phase
The Rest phase should not begin until after the patient is prepared for testing. During this
phase, take resting ECGs, determine resting averages, and allow the patient to warm up.
Note: To cancel the test at any time (in Rest phase, Exercise phase, or Recovery phase), press
Abort Test/Close Patient (ESC) on the keyboard or click the Exit icon in the upper right of
the screen.
3. Enter data as needed—Blood pressure, comments, and Rest labels that will appear on
Rest reports. To make comments during the Rest phase, click the Rest Label or the
Comment icon and enter the information.
1 2
4. During the Rest phase, print the following reports by clicking its icon.
1 2 3 4
5. If your system has the Freeze Frame option, you can review previous waveform data
while continuing to monitor current patient activity. See Freeze Frame on page 11-18.
Note: The Freeze Frame Option can be used in Rest, Exercise, and Recovery phases.
Warm-up Phase
After you have taken the resting ECG and entered other Rest data, have the patient warm
up before exercising.
Exercise Phase
Explain to the patient that the speed and grade (or workload if you are using an ergometer)
will change during the test.
1. Verify that the patient’s heart rate and ST parameter data are visible on the Info
Toolbar if you are using those functions.
2. When the patient is ready, click the Start Exercise icon or press F12 to begin the
Exercise phase.
3. If the functions are available on the Info Toolbar, type in blood pressure (BP)
measurements (1 to 400 mmHg), rate of perceived exertion (RPE), or enter comments
at any time during the test.
Note: Configure the procedure to prompt you automatically for this information. See
Prompts Tab on page 10-7.
• When a notification event occurs, a message appears. The message remains until
you remove it. You can also disable the notification at this time.
• At any time during the Exercise phase, you can change the way you view and
gather ECG data. See Data and Display Options on page 7-11 for details.
Recovery Phase
When the patient has completed the Exercise phase (or for some reason must discontinue
the Exercise phase), click the Start Recovery icon or press F12. The test moves to the
Recovery (cool-down) phase. The speed and grade (or workload if you are using an
ergometer) change to the level programmed for the Recovery phase.
During the Recovery phase you can edit the summary page of the final report. Refer to
Final Reports on page 8-1.
Review Phase
After the patient has completed the Recovery phase of the test, click the Review Mode
icon or press F12. Once the study enters Review, ECG data will no longer be displayed.
During the Review phase you can also perform the following functions:
◆ Edit the summary page of the final report (if you have not done it during the Recovery
phase).
◆ Review, e-mail, or print the final report.
◆ Append Full Disclosure pages to the Final Report (if your system is equipped with the
Full Disclosure option).
◆ Risk Scoring and Reanalysis (if your system is equipped with these options).
Click the Exit icon to end the test. A dialog box prompts you to save the test or end
the review session without saving.
Chapter contents
◆ Computer System 3-3
◆ Preamp II 3-5
◆ Patient Cable with Lead Wires 3-5
◆ Printers 3-5
◆ Isolation Transformer 3-5
◆ Keypad 3-7
◆ External Hard Drive 3-7
◆ Keyboard 3-7
◆ Computer Operating System 3-10
◆ Q-Stress Application 3-11
! Using equipment that does not meet Q-Stress system specifications may cause patient
injury or cause other system components to fail. When purchasing any component not
supplied by Cardiac Science Corporation, ensure the component meets minimum system
specifications.
! Q-Stress supports the use of Trackmaster treadmill model TMX425 as an approved exercise
device. DO NOT CONNECT Trackmaster treadmills with mounted controllers (TMX425C or
TMX425CP) to a Q-Stress stress system. These controllers are not supported by Cardiac
Science Corporation. Using a TMX425C or TMX425CP controller prevents the Stress system
from maintaining command of the treadmill.
! The network must be available more than 95% of the time. You can disconnect the system
from the network if it is unstable.
The block diagram (Figure 3-1) shows a typical Q-Stress system configuration. Refer to
the Q-Stress system installation instructions for details.
AC Wall Power
Treadmill Outlet
AC Wall Data
USB Outlet
Isolation
Remote PS2 Transformer
Keypad
(Optional)
Monitor Patient
Cable
USB
Keyboard Computer
USB Laser Printer
Parallel Chart Recorder
USB RS-232 Preamp II
Mouse
QRS Synch
RS-232 Blood
Pressure
Monitor
Hardware
WARNING. Patient or operator injury.
! Ensure that components of the Stress system are placed in such a way that components will
not fall on the operator or patient. Secure cables so that they do not create a tripping hazard
for the operator or patient or become tangled in the exercise device.
Computer System
The computer has two internal hard drives, a DVD-RW drive, and a 3.5 inch floppy drive.
Q-Stress 4.0 ships with a single system configuration. However, several older
configurations are supported for upgrading to version 4.0. The following diagrams show
legacy and current computer and Preamp II backplane connections.
1 1
2
4 5 4 5
9
7 7
13 9
8
6 16 6
11 12 11 12
17
14 13
15 10
15 10
1 1
4 5
6 8
4 5
9
9 7
7 Preamp II
10
13
11 12
6
11 12
14 13
15 21 20 18 19
15 10
2.4 GHz
2.4 GHz Dual monitor
Port Use
1 AC Power
3 AC Power Switch
4 Keyboard
5 Mouse (PS/2)
8 Unused
12 Network (optional)
Monitor
13
Note: Attach the service card (in plastic sleeve) to video cable.
16 TM-Series Treadmill
17 Mouse (USB)
QRS Synch
18 Note: Connect the QRS Sync to the blood pressure monitor, rather than
an Analog Output). See Taking Accurate Blood Pressure Measurements on
page C-1.
19 Analog Output
20 To Computer
21 DC Power
Preamp II
The Preamp II digitizes and filters patient signals. A data collector is integrated with the
unit. The Data Collector provides analog outputs and a QRS synchronized output pulse.
! The Q-4500 patient cable cannot be used for a Q-Stress test even though it can connect to
the Q-Stress system depending on the type of preamp. The use of the Q4500 cable with the
Q-Stress system could jeopardize the effectiveness of defibrillating a patient while
connected to the system.
Printers
The following table lists available printers. Always use the specified cables and connect to
the printer ports shown in Computer System on page 3-3.
Printer Cable
TCR 1000 chart recorder USB to Parallel conversion cable
Note: Ensure the printer has sufficient paper before starting a test. In some cases, a test
cannot be concluded if the printer runs out of paper.
Isolation Transformer
An isolation transformer prevents system components from developing excessive leakage
current.
WARNING. Shock hazard.
! To prevent electrical shock to a patient, the computer, monitor, preamp, printer, and external
hard drive must receive power from the isolation transformer using cables supplied with the
system.
Do not plug any other electrical equipment into the isolation transformer or connected
power strip.
The isolation transformer is plugged into a dedicated circuit. The following components
are plugged into the isolation transformer:
◆ A outlets: Preamp and printer
◆ B outlets: Computer and monitor (if the system has an external hard drive, a power
strip plugs into a B outlet and the monitor and external hard drive plug into the power
strip)
The treadmill, ergometer, and blood pressure unit do not plug into the isolation
transformer. The treadmill must be plugged into a different dedicated circuit than the
isolation transformer. The ergometer and blood pressure unit can be plugged into any AC
power outlet.
Keypad
The optional keypad (Figure 3-2) controls the treadmill or ergometer and the phases of the
Q-Stress testing.
POWER
UP
START/STOP STOP
TREADMILL TREADMILL
SLOWER FASTER
DOWN
PHASE
12-LEAD
WRITE SCREEN
The buttons correspond to the function keys on the keyboard template with the exception
of Phase, which corresponds to F12 (Start Rest/Exercise/Recovery/Review) on the
keyboard (or clicking Rest, Exercise, Recovery, and Review buttons in sequence).
Keyboard
The Q-Stress system uses a 101-key keyboard. The labels of several keys are modified to
reflect special use by the system. Table 3-2 identifies system-specific keys.
New Test F2
Electrode Check F3
Rest Label F4
12 Lead F5
Write Screen F7
Comment F9
BP F10
Up Ctrl + up arrow
Additional system functions may be accessed using key combinations. The following table
lists these combinations.
Note: Some key combinations may be available only while using certain functions.
Keyboard Equivalents
Non-English versions of Q-Stress may have non translated icons or keys. The following
chart lists these items.
Software
The Q-Stress system computer is pre-loaded with the Q-Stress application and the
Microsoft Windows Vista Ultimate operating system.
WARNING. Inaccurate test data.
! Changing the software configuration of the computer (other than using the procedures listed
in this manual) may cause inaccurate patient readings or reduce system response time during
a test. Specifically:
Do not alter the software.
Do not change any configuration setting, except as indicated in this manual.
Do not install any unauthorized software.
Do not use diskettes or other media previously used with non-system computers.
Additionally, changing the software configuration may reduce system response time, reduce
data storage space, or void the warranty.
If another application must be installed or run on the system, monitor initial readings to
ensure the Q-Stress application is operating correctly.
! Do not change any operating system settings other than date/time and number format.
Changing other operating system settings may cause Q-Stress to respond slowly or
inaccurately.
System Startup
To start the Q-Stress system:
1. Press the power button on the computer.
2. If required, enter a login name and password.
Note: The login account must have administrative privileges for the Q-Stress system to
function properly.
3. To start the Q-Stress application, either double-click the Q-Stress icon on the desktop
or select Start | All Programs | Clinical | Stress.
Note: When using Q-Stress, the Q-Stress application window must be maximized.
System Shutdown
To shut down the Q-Stress system on Windows Vista:
1. Select File | Exit from the Q-Stress application menu bar.
2. Select the Start icon from the Windows operating system task bar.
3. Select Shut Down from the System menu.
Q-Stress Application
Double-click the Q-Stress desktop icon or go to Q-Stress in the Start menu to open the
application.
Typical Display
Figure 3-3 shows a window representative of a Q-Stress test. This one shows the Exercise
phase. In each phase of the test, different items will be active. Items that are inactive are
grayed out.
1
2
4 5 6
1 Menu bar
2 Toolbar
3 Info Toolbar
4 Lead Labels
5 Average Beats (R = Resting, C = Current, W = Worst Case)
6 Current ECG Waveforms
User Documentation
This manual is available from the Help menu.
To print the Q-Stress User’s Guide and Service Manual using the chart recorder you
must rotate the view (select View | Rotate Clockwise) and print the PDF as a
landscape document with the Print as Image box checked.
To print the manual to a laser printer, use the default settings.
The Q-Stress User’s Guide and Service Manual is also available on the Q-Stress
application CD and can be printed from Adobe Reader.
Demonstration Mode
The system ships with a demonstration mode to technicians to use the Q-Stress system
without requiring a patient. For a more complete description see Demonstration Mode on
page 10-3.
Chapter contents
◆ Install Virus Scanning Software 4-2
◆ Configure the Operating System 4-3
◆ Configure Adobe Acrobat 4-5
! Changing any BIOS parameters or operating system settings other than listed below may
cause the Q-Stress system to operate slowly or display incorrect readings.
Time and date and the measurement system may be changed using the procedures below.
Optionally, an email account can be configured for sending reports.
Screensaver
The screensaver cannot be enabled. The Q-Stress system automatically disables any
screensaver.
! Do not edit original PDF files. Always make a copy for editing.
Before editing any PDF files, establish a document control process. Refer to Adobe
Acrobat help for information regarding document security and digital signatures.
Note: Uninstalling the full version of Adobe Acrobat also uninstalls the included version of
Reader. Re-install Adobe Reader from the Q-Stress CD.
Chapter contents
◆ Connection Test 5-2
◆ Display Options 5-3
◆ Skin Preparation 5-4
◆ Use of Quik-Prep Electrodes 5-4
◆ Quik-Prep Tips 5-6
◆ Lead configurations 5-8
Connection Test
Before you begin the Rest phase of a stress test, you must attach the electrodes to the
patient and verify that they are connected satisfactorily. One way of doing that is by using
the Q-Stress Impedance Check.
1. To use the Impedance Check, click the Impedance Check icon in the top center of the
screen. The software check the quality of each electrode connection.
Note: Use Impedance Check before beginning the Rest phase. Once the Rest phase
starts, you cannot perform an Impedance Check. The button will be grayed out.
Note: If you need to do an Impedance Check after starting the Rest phase, you must
abort the test. Click the Exit button and select Abort. This cancels the test without
saving the test data, and re-activates the Impedance Check icon.
3. Click the Lead Set drop-down menu and select the appropriate lead set.
4. Check the impedance either automatically or manually.
• To check all electrodes automatically: Click Sequence in the Test Mode box. The
system will cyclically check each electrode. As an electrode is tested, it will show as
selected in the Site (Lead Wire Label) section of the window with the measured
impedance value. The electrode will also be color-coded on the torso diagram
based on the measured impedance.
• To check an individual electrode: Click Manual in the Test Mode box. Select the
electrode to be checked by clicking on it on the torso or in the Site (lead Wire
Label) section.
5. Click Start to begin the Impedance Check. The message Checking lead set, please
wait appears. The software checks all of the electrodes (in Sequence mode) or a single
electrode (in Manual mode).
A square box indicates that the electrode is located on the back of the patient.
Note: If many of the electrodes show a white circle, make sure that you are using the
correct lead set.
If RL is not connected or fails, all other electrode positions will show white (open).
6. Click Exit when you have finished checking the electrodes.
Display Options
Two display options are available:
◆ Site for electrode location
◆ Lead Wire Label for lead wire labels
Skin Preparation
A good, low-impedance electrical connection between the patient and electrode is essential
for clean, interference-free ECG data. Failure to prepare the skin site properly causes
baseline shifts and noise from patient motion and respiration.
! Do not use the Quik-Prep Patient Preparation System on open sores, burn sites, scar tissue or
on skin with abnormal conditions. Do not operate without applicator collar as this may cause
skin trauma. When prepping the skin (either manually or by the Quik-Prep System), it is
possible to penetrate the epidermis and reach the dermis. This could cause skin trauma,
manifested by slight pain and/or bleeding, and a resultant scab. In severe cases, any skin
preparation method could cause mild scarring. If skin trauma occurs, the patient should
receive appropriate medical treatment for skin abrasion. Inform the patient of possible
consequences of this patient preparation procedure.
1. Prepare patient.
2. Shave body hair.
3. Use alcohol to remove excess oil.
Note: There is no need to use an abrasive material or additional conductive gels.
4. Check the applicator’s tip and electrode contact. Make sure they are clean.
5. Before placing electrodes on the patient, check each electrode to be sure gel is visible.
Hold the electrode by the tab.
Note: To attach electrodes, move your finger around the foam pad, smoothing
outward.
Note: Do not press the center of the electrode because this can displace the electrode
gel.
7. Plug the reference wire into the RL (R) jack, allowing the wire to hang loosely.
8. Prepare the right leg electrode first. Center the applicator tip into the electrode’s
crossbars.
9. With a slight pressure, press the collar into the foam, press and hold the switch for 1 to
2 seconds until the applicator automatically stops rotating.
Note: Releasing the switch prematurely will stop rotation and result in an inadequate
attachment.
! If the right leg site is not adequately prepared, the other sites may not yield optimal traces.
To check if the right leg is properly prepared refer to Quik-Prep Tip 2 below.
10. Attach the free end of the reference wire to the right leg electrode.
11. Prepare the left leg electrode according to step 7 through step 10. When the
preparation is complete, the applicator automatically stops rotating and its green light
illuminates.
Note: If the green light flickers or does not light, refer to Quik-Prep Tips 3 and 4 below.
! Due to physiological differences in electrode sites, the green light may flicker or not
illuminate even though the preparation may be adequate. Do not prepare any electrode site
more than three times.
12. Prepare the remaining electrode sites as in step 7 through step 10. The Quik-Prep
applicator compensates for patient skin differences by adjusting the duration of its
rotation. The green light illuminates when the preparation completes.
13. When all electrode sites have been prepared, run the Impedance Check (see
Connection Test on page 5-2).
Quik-Prep Tips
Use these suggestions to ensure proper attachment of electrodes.
1. Clean the applicator tip and contact. A dirty applicator tip or contact can cause an
incomplete preparation.
WARNING. Shock hazard.
a. Use a damp cloth to remove excess gel deposits from the tip and electrode contact.
b. Make sure the electrode contact is even with the end of the collar.
a. With the applicator free and the reference wire attached to the right leg site,
depress the switch until the applicator stops rotating (the green light will not
activate).
b. Without releasing the switch, touch the applicator electrode contact to the snap of
the questionable electrode. If the prep is good, the green light will come on.
4. Test that the green light is in working condition. The applicator light is important
because it indicates when the prep is complete.
a. Disconnect the recharger and the reference wire from the applicator.
b. Press the switch. The green light should come on when the applicator stops
rotating and stay on as long as the switch is depressed.
5. Check the integrity of the reference wire and applicator’s sensing circuit.
This is necessary if the applicator spins longer than two seconds or if the patient’s
epidermis is penetrated.
a. Plug the reference wire into the applicator RL (R) jack (make sure recharger wire is
disconnected).
b. With the applicator free, depress and hold the switch without release.
c. Touch the applicator electrode contact to the metal on the grabber clip of the
reference wire. The green light should come on, confirming the sensing unit and
reference wire are working correctly. If it does not light, stop using the applicator
and contact Cardiac Science Corporation Technical Support.
Lead configurations
The following figures indicate where to place the electrodes on the patient for the Mason-
Likar 12-lead, Cabrera 12-lead, Frank, and Canadian (Bipolar Chest). The table
accompanying each figure shows the color cable to attach to each site.
The lead names and their formation are the same for Mason-Likar (standard 12-lead) and
Cabrera. However, the placement of the electrodes on the body surface are not the same.
Cabrera electrode placement for the right and left arm (RA and LA) and the left leg (LL)
are at the wrists and ankles respectively. Mason-Likar places these electrodes on the torso at
the base of the limbs. The Cabrera lead placement is appropriate for resting (supine)
ECGs, whereas the Mason-Likar placement provides a more clear ECG signal during
exercise.
When running physiological studies using the Bipolar or Frank lead set, not all electrode
leads are connected to the patient. Make sure that the unused leads do not make contact as
this can generate spikes on the waveform data. The spikes can be detected as ectopic and/
or alter heart rate.
The following figures show the AHA mapping. An IEC mapping conversion chart is
located in AHA to IEC Equivalents on page 1-7.
V2 V2 Brown/Yellow
V3 V3 Brown/Green
V4 V4 Brown/Blue
V5 V5 Brown/Orange
V6 V6 Brown/Violet
RA RA White
LA LA Black
LL LL Red
RL RL Green
Patient Cable
Site LWN1 Color Frank Lead Placement Sites
E V1 Brown/Red
H V2 Brown/Yellow
C V4 Brown/Blue
A V6 Brown/Violet
I RA White
M LA Black
F LL Red
RL RL Green
M V1 White
LL LL Black
V5 V5 Red
RL RL Green
Chapter contents
◆ Adding a Patient Entry 6-2
◆ Patient Demographic Information 6-4
◆ Test Parameters 6-5
◆ Previous Studies/Tests 6-13
◆ Print Patient Info 6-14
If you have the Network option, patient records can be downloaded from the hospital
information system. Refer to Q-Exchange Patient Data Export and Import on page 11-6 to
configure the import. Patient records will then be brought into the Q-Stress database each
time the New Patient/Test icon is selected.
Note: Patient date of birth and weight cannot be updated after the test has started.
No patient information is required to perform a Q-Stress test. You can start a test
immediately without entering patient demographics (name, address, and so on). This
information can be entered later.
1. Search for the patient entry. Enter the last name of the patient or other information
such as first name, medical record number (MRN), or social security number (SSN).
Click Search. Matching entries are listed in the lower half of the Patient Selection
screen.
• You can also enter a portion of the field you are searching on. For example, if you
are unsure of the spelling, enter part of the name and place and asterisk (*) at the
end (for example, Smi*).
• An asterisk cannot be used in the social security number field. If you are using the
social security number field, enter a partial SSN and leave the rest of the field
blank.
• The U.S. version of Q-Stress uses a social security number as part of the patient’s
demographic information. This field is not available in international versions.
2. If the patient is listed, highlight the line and click Select or double-click the patient
name. The patient’s information appears.
Sort the search results by right-clicking on the label bar and selecting the appropriate
sort criteria.
3. If there are no matching entries, click New to create a new record.
1 {
2
{
3 {
1 Patient Demographic Information
2 Test Parameters
3 Previous Studies/Tests
Date of Birth
Age is automatically calculated from the date of birth. If no date of birth or age is entered,
an age of 60 years is used for calculations.
Age
If you enter the patient’s age directly, the date of birth field remains blank.
If no date of birth or age is entered, an age of 60 years is used for calculations.
Max Predicted HR
The Max Predicted Heart Rate (HR) is calculated from the patient’s age based on the
formula in the selected procedure. Override the calculated Max Predicted HR by manually
entering data in this field. If you change the procedure selection, the manually entered
Max Predicted HR will be replaced with a recalculated value based on the patient’s age.
You must manually re-enter your desired value if different from the new system-calculated
value.
To change the calculation used to determine the default Max Predicted HR see Setting up
the Procedure on page 10-4.
Target HR
The Target HR is calculated from the patient’s age based on the formula in the selected
procedure. You can override the calculated Target HR by manually entering data in this
field. If you change the procedure selection, the manually entered Target HR will be
replaced with a recalculated value based on the patient’s age. You must manually re-enter
your desired value if different from the new system-calculated value.
To change the calculation used to determine the default Target HR see Setting up the
Procedure on page 10-4.
Gender
The gender field has a drop-down menu that allows you to select male, female,
unspecified, or unknown for gender. Use the All Genders entry for searching only.
Test Parameters
There are seven tabbed sections used to set parameters: Environment, Order Info, Contact
Info, Medications, Diagnosis, Clinical Procedure, and Resting ECG. Click the tab name
to see the choices for that parameter.
Environment
The test environment refers to the various items that compose the current exercise test
settings. These include:
◆ Exercise Device
◆ Beta Blockers in last 24 hours
◆ Protocol
◆ Procedure
◆ Final Report
◆ Attending and Referring Physicians
◆ Technician
◆ Department
◆ Location
◆ Reason for Test
The Environment window (Figure 6-2) displays the current default selections for each of
the following required settings: Exercise device, Protocol, Procedure, and Final Report.
The other fields are optional.
Protocol (required)
An exercise stress test is controlled by a protocol that defines the speed and grade sequence
for a treadmill or workload for an ergometer. A protocol is divided into a number of stages,
each having a specified exercise control and duration.
Q-Stress includes a number of standard protocols for treadmill, ergometer, and
pharmacological testing. Refer to Protocol Parameters on page B-1 for a list of the
parameters for all protocols.
The protocols listed below come with the system and cannot be deleted or changed. To
make a selection, click the down arrow next to the box and click your choice from the
resulting list.
Note: Unless otherwise selected, the system will use the default protocol corresponding to
the exercise device you set in System Setup.
Treadmill Protocols
◆ Bruce
◆ Manual
◆ Modified Balke
◆ Modified Bruce
◆ Naughton
◆ USAFSAM2 (USAF/SAM 2.0)
◆ USAFSAM3.3 (USAF/SAM 3.3)
◆ Ramped high
◆ Ramped medium
◆ Ramped low
Ergometer Protocols
◆ Åstrand
◆ Manual
Pharmacological Protocols
◆ Manual
◆ Persantine
To define a new protocol, go to Setting up Protocols on page 10-17. You can also refer to
Protocol Parameters on page B-1. Protocols that ship with the system can be used as
templates for defining new protocols. The protocols that ship with the system cannot be
changed.
Procedure (required)
The procedure is a set of parameters that defines how an exercise test will be performed.
The procedure includes such items as the ECG lead set, ST slope and level measurements,
notification settings, formulas, screen and Info Toolbar layout, report formats, analog
output configurations, and prompts.
To make a selection, click the down arrow next to the box. Changing the procedure
overrides entries in Max Predicted HR and Target HR.
To define a new procedure, go to Setting up the Procedure on page 10-4. When you create a
procedure you assign it a unique name. You can also view or modify an existing procedure.
Note: The exception is the Quinton procedure, which cannot be changed.
The department list is maintained as part of Institution. If you have not entered
information in the Institution setup, Department and Location will be grayed out, and
you will not be able to enter either list.
There is only one physician list in System Setup. It is used for both attending and referring
physicians.
To enter telephone numbers or an e-mail address, click the down arrow next to Phone/
Email. A list of descriptions appears.
Select the description. Type the information in the right-hand box. Repeat for each
number you need to enter.
Medications (Optional)
Note: At times the data entry is larger than the field display. Double-click an entry to enter
text edit mode for that field.
Use this window (Figure 6-4) to enter medications that the patient is currently taking. The
system ships with a default medication list. However, you can easily add a medication not
on the list. Use the following steps to select a medication (or add a new one).
1. Click the down arrow next to Medication Name. Click the medication the patient is
currently taking. If it is not on the list, type the name in the white box above the list.
Note: The Medication Name list is dependent on the Medication Class. To limit the list
of medication names, select a Medication Class first.
2. Click the down arrow next to the Medication Class box. A list of classes is displayed.
Click the class that fits the medication you are entering. If it is not in the list, type the
name in the white box above the list. The All Medications class contains every
medication in the system and can be used when Medication Classification is not
needed.
Note: Adding a beta blocker medication does not set the Beta Blocker in last 24
hours checkbox on the Environment tab. You must select Yes or No separately. (See
Other Optional Fields in Environment on page 6-7.)
Note: Only medication class and medication name are required to enter a medication
to the patient’s list. Dosage, frequency, method and time are optional fields.
3. Click the down arrow next to Dosage. Select the correct dosage from the list by
clicking on it. If the dosage does not appear on the list, type the name in the white box
above the list.
4. Click the down arrow next to Frequency. Select the frequency from the list by clicking
on it. If the frequency does not appear on the list, type it in the white box above the
list.
5. Click the down arrow next to Method. Select the method from the list by clicking on
it. It the method does not appear on the list, type it in the white box above the list.
6. To enter the Time of Last Dose, you can either type in the date or click the down
arrow next to the white box. A calendar is displayed. Click the correct date. Use the
arrows to move the month forward and back. Click the year to display arrows to
change the year.
7. Click the Enter to List button. The medication with all its information is added to
this patient’s list. If you have entered a new medication, it will also be added to the
master list.
Note: The Enter to List button is grayed out until you have entered a medication name
and class.
To remove a medication from the patient’s list, highlight it and click the Remove from
List button.
To define a new medication, go to Changing Medication Lists on page 10-25. This section
also shows you how to view, modify, or delete an existing medication on the master list as
well as the dosage, frequency and methods lists.
Diagnosis (Optional)
Click the Diagnosis tab (Figure 6-6) to enter one or more diagnoses for the patient. The
system ships with a default diagnosis list. However, you can add a diagnosis to the list.
Use a pre-entered diagnosis by clicking the down arrow to show the list. Highlight the
diagnosis you want to use and click the Enter to List button. This will move it to the
Diagnosis box.
You can also enter a diagnosis not on the master list by typing it in the Diagnosis box.
When you click Enter to List button, it is automatically added to the current patient’s
diagnosis list and to the master list in the database.
To enter the date of the diagnosis, you can either type in the date or click the down arrow
next to the white box. A calendar is displayed. Click the correct date. Use the arrows to
move the month forward and back. Click the year to display arrows to change the year.
To remove a diagnosis from the patient’s list, highlight it and click the Remove from List
button.
To define a new diagnosis, go to Changing Comment Type Lists on page 10-23. This section
also shows you how to view, modify, or delete an existing diagnosis on the master list.
Click the down arrow to display the list of clinical procedures. Click the clinical procedure
you want to add to your patient’s list and then click the Enter to List button. It is then
listed in the Procedure field.
You can also enter a clinical procedure not on the list by typing it directly in the Clinical
Procedure box. To add it to the patient’s list and to the master list in the database, click
Enter to List
To enter the date of the clinical procedure, you can either type in the date or click the
down arrow next to the white box. A calendar is displayed. Click the correct date. Use the
arrows to move the month forward and back. Click the year to display arrows to change
the year.
To remove a clinical procedure from the patient’s list, highlight it and click the Remove
from List button.
To define a new procedure, go to Changing Comment Type Lists on page 10-23. This
section also shows you how to view, modify, or delete an existing procedure on the master
list.
You can also enter a bottom line statement not on the master list by typing it in the
Comments box. When you click Enter to List button, it is automatically added to the
current patient’s Resting ECG list and to the master list in the database.
To remove a Resting ECG from the patient’s list, highlight it and click the Remove from
List button.
To define a new Resting ECG, go to Changing Comment Type Lists on page 10-23. This
section also shows you how to view, modify, or delete an existing Resting ECG on the
master list.
Previous Studies/Tests
The lower portion of the Patient Information window shows previous studies and tests. If
there are previous studies/tests, the date of the study will be listed following the closed file
icon. The current study will be displayed following the open file icon.
A single click on a previous study will make it current. The information for that study is
displayed in the demographics and tabbed sections.
With a previous study highlighted, click OK to open it. A message is displayed asking if
you want to create a new study. Click No. The previous study will open.
Note: If you click Yes, a new study will be created for the same patient but the previous
study will load for you to review. The new study will contain the data entered and displayed
in the Patient Information window prior to selecting the saved study.
Note: The information displayed in the Patient Information window always relates to the
open study.
Chapter contents
◆ Before the Test 7-2
◆ Blood Pressure Monitor 7-3
◆ Blood Saturation Level (SpO2) Reporting 7-4
◆ Rest Phase 7-5
◆ Warm-up Phase 7-7
◆ Exercise Phase 7-7
◆ Initial Editing of the Final Report Summary Page 7-9
◆ Recovery Phase 7-8
◆ Review Mode 7-9
◆ Save and Exit Test 7-9
◆ Close the Patient Entry 7-9
◆ Data and Display Options 7-11
WARNING
! Every exercise test must be performed under the supervision of a trained exercise test
clinician who should be aware of patient response, including, but not limited to, dizziness,
hyperventilation, shortness of breath, and fibrillation. Clinicians also should be aware of
hazardous conditions, including loose cables that the patient could trip over and sudden
changes in treadmill speed or grade or ergometer workload.
WARNING
! Before performing an exercise test, read the operator manual for the exercise device you are
using. Follow the safety requirements given in the manual.
! Q-Stress supports the use of Trackmaster treadmill model TMX425 as an approved exercise
device. DO NOT CONNECT Trackmaster treadmills with mounted controllers (TMX425C or
TMX425CP) to a Q-Stress stress system. These controllers are not supported by Cardiac
Science Corporation. Using a TMX425C or TMX425CP controller prevents the Stress system
from maintaining command of the treadmill.
2. Show the patient how to get on and off the treadmill (as described in the treadmill
user guide).
3. Tell the patient not to hold the handrail unless absolutely necessary. (Gripping the rail
could induce interference that might affect the accuracy of the test measurements.)
4. Have the patient practice getting on and off the treadmill while it is running at its
lowest speed and grade.
If you are using an ergometer:
1. Explain to the patient that 35 RPM or greater must be maintained at all times and
that the workload (resistance) will increase during the test.
2. Show the patient how to get on and off the ergometer.
3. Tell the patient not to grip the handlebars too tightly (gripping the handlebars too
tightly could induce interference that might affect the accuracy of the test
measurements).
4. Make sure the test electrodes are attached correctly. See Connection Test on page 5-2.
Note: Electrodes must be applied and the Impedance Check run before you start the Rest
phase of the test.
The default screen layout should include the BP/Previous BP function on the Info Toolbar
(see Info Toolbar Tab on page 10-11).
Rest Phase
The Rest phase begins after you have prepared the patient for testing. During this phase,
you take the resting ECG, determine resting averages, and allow the patient to warm up.
1. Click the Start Rest icon or press F12 to begin the Rest phase. The screen is displayed
similar to the following. ECG waveforms should be traveling across the display. The
test screen appears (Figure 7-1).
Note: These instructions assume you are using the Quinton default procedure or
another similar procedure.
2. Enter pre-test data: Blood pressure, comment, rest label. The Rest phase reports
display this information. Click the name (if the function is located in the Info
Toolbar) or icon (if it is located in the toolbar) to activate the function. For example,
to enter blood pressure, click BP in the Info Toolbar or press F10. The blood pressure
field changes to allow entry of the blood pressure rate. To enter a comment, click the
Comment icon in the toolbar or press F9.
Note: To receive a Framingham protocol risk score, you must enter the patient’s resting
blood pressure.
3. At any time during the Rest phase you can print a 12-lead or Write Screen report by
clicking on the corresponding button. The Average Beat report can be printed at any
time after the average beats are displayed. See Print ECGs During Test on page 7-31 for
further information.
Note: If you choose to change your ASVV lead selection during the Rest phase, the
Start Exercise icon will be grayed out on the toolbar for a few extra seconds to allow for
the change to be processed. Once the Start Exercise icon is active again, you can
advance to the next phase.
Note: If the leads become disconnected during the test, the average beat display may
be incorrect for up to 30 seconds while the beat detection algorithm “relearns.”
Warm-up Phase
After you have performed the resting ECG and gathered other rest data, have the patient
warm up before exercising.
Assist the patient in mounting the exercise device. Be sure that the patient warms up
sufficiently before starting the Exercise phase.
If you are using a treadmill:
1. Click Start Belt on the Info Toolbar or press the Scroll Lock (or the left-most red key)
to start the treadmill belt.
2. Keep the speed and grade constant while the patient is getting used to the treadmill.
WARNING. Patient injury.
! Make sure the patient is not standing on the belt when you start the treadmill. The patient
should straddle the belt. If you are going to start or stop the belt, warn the patient ahead of
time so he or she can be ready.
Exercise Phase
Explain that you are now starting the Exercise phase, emphasizing that the speed and grade
or workload will change during the test.
1. Verify that the patient’s heart rate and ST parameter data are visible on the Info
Toolbar if you are using those functions.
2. When the patient is ready, click the Start Exercise icon or press F12 to begin the
Exercise phase.
3. If you have the associated boxes displayed on the Info Toolbar, you can type in blood
pressure (BP) measurements (1 to 400 mmHg), rate of perceived exertion (RPE), or
enter comments at any time during the test. Click the appropriate icon or label to
enter the information.
Note: You can configure the procedure to automatically prompt you for this
information. See Prompts Tab on page 10-7.
When a notification event occurs, a message appears. The message stays until you
remove it or disable additional notifications.
WARNING. Patient injury.
Note: The Quinton default procedure has all notifications turned off. To enable
notification messages and set thresholds, you must create your own procedure. See
Setting up the Procedure on page 10-4 and Notifications on page 10-6.
Note: The only audio notification is an indication that the exercise stage will change in
ten seconds. This is also enabled in the procedure setup.
5. Q-Stress includes a status bar at the bottom of the display to tell you when a report is
being generated. Timed 12-Lead and Average Beat reports and Ectopic reports may be
generated without your input and, dependent on your Procedure settings, may only be
captured electronically. The report status bar will let you know exactly when data is
being captured.
Show or hide the report status bar by clicking View Report Status Bar or pressing
Ctrl+U.
Recovery Phase
When the patient has completed the exercise program or exercised as long as possible, click
the Start Recovery icon or press F12. The test moves to the Recovery, or cool-down phase,
and the speed and grade or workload change to the level programmed for the Recovery
phase.
Note: If you do not press Start Recovery after the exercise program has completed, the
final stage will continue running. Completion of the programmed Exercise phase does not
automatically start the Recovery phase of the test.
Review Mode
To enter the Review Mode, click the Review Mode icon or press F12. While in review, you
can view, e-mail, print, and save the final report, modify patient information, change the
final report format, or add comments to the summary page of the final report by clicking
the Edit Final Report icon. For information on the final report, see Chapter 8, Final
Reports.
To... Click...
New Patient Test icon.
Rest icon.
To... Click...
Exit button
Note: You must close the current patient entry before you can start a new patient entry.
To stop the test, click Exit or press Esc, then click Abort in the dialog box that appears.
This will cancel the test but not the patient.
Available: All phases.
Blood Pressure
Click BP or press F10 to enter patient blood pressure. The BP field highlights to allow the
blood pressure to be entered. The previous reading moves to the Prev field.
If a blood pressure device is used, blood pressure can be prompted either automatically or
manually.
◆ Q-Stress can automatically prompt the BP device to take a blood pressure.
◆ Press F10 or click BP (then click Start BP) to manually prompt the blood pressure
device.
Refer to the blood pressure device user guide for the for more information. See Taking
Accurate Blood Pressure Measurements on page C-1 for information on correctly hooking up
the blood pressure monitor.
Note: If you have a SunTech Tango or Tango+ BP monitor or Corival ergometer with BP
monitor, use the Stop BP button on the Info Toolbar to stop a BP measurement in process.
Note: If you abort the stress test while a BP412 unit is taking a blood pressure reading, it will
continue to take the blood pressure reading already in progress.
Cancel Test
See Abort or Cancel Test on page 7-11.
Change ASVV
Select Tools | ASVV Selection. The ASVV Lead Selection dialog box appears (Figure 7-2).
Three leads must always be selected. Click in the box in front of the lead name to select it.
Note: The default selection is II, V2, and V5.
Note: You may experience a small distortion in the waveform traces within four seconds of
changing the ASVV leads. When ASVV leads are changed, it will take another 20 seconds for a
new average beats to be calculated.
Click Load. The Up and Down arrows appear. Click the Up arrow to increase the
workload to the desired level. Click the Down arrow to decrease the workload.
Note: Each click of an arrow changes workload by 10 watts.
You can also use the keyboard or optional keypad to change the workload on an ergometer.
◆ On the keyboard, press the Ctrl + Up or Down arrow key and the key to increase or
decrease the workload.
◆ On the optional keypad, press the Up or Down buttons to control the workload.
Note: If you are using a pre-programmed protocol and change the workload manually,
the protocol switches to the Manual Ergometer protocol and no longer automatically
changes workload. To return to the protocol, click Protocol on the Info Toolbar and
select the protocol.
Click the
lead you
want to change
This menu
appears
You can also change the number of leads displayed. Click 12-lead or select from the
options for the 3 Lead or 6 Lead selections.
Available: Rest, Exercise, and Recovery phases but not while creating a Write Screen
report.
Change Protocol
To change the protocol during the test, click the word Protocol. A drop-down box is
displayed. Click the down arrow next to the box and click the protocol needed for this test
to see the available protocols.
You can also use the keyboard to change the speed or grade on a treadmill. Press Ctrl and
one of the four arrow keys to increase or decrease the speed or grade.
Note: If you are using a pre-programmed protocol and change the speed or grade
manually, the protocol will switch to the Manual Treadmill protocol and will no longer
automatically change grade and speed (or workload). To return to the protocol, click
Protocol on the Info Toolbar and select the protocol you want to use.
You can also use the optional keypad to change speed or grade on a treadmill. Press the Up
or Down buttons to control the grade on the treadmill. Press the Slower or Faster buttons
to control the speed on the treadmill.
Comments
Available: Rest, Exercise, and Recovery phases
To enter comments during the test, you can click the Comment icon. The Comments
dialog box appears (Figure 7-3).
Double-click one of the available selections in the bottom box. It will move to the top box.
You can also drag a selection from the list into the text edit area to append it to other text.
Click OK to enter the comment and close the window.
You can also type in your own comment. If you want your comment added to the selection
list, click the Save New Entry to Database check box.
The Comments label is printed on the next in-test report. The field is then cleared. If you
want another label on an in-test report, you must enter another comment.
Note: You can print trend graphs as a page in the final report.
BP Graph
The BP graph (Figure 7-4) shows Blood Pressure (Systolic and Diastolic) measurements
over time.
HR Graph
The HR graph (Figure 7-5) shows Heart Rate in beats per minute over time.
HR x BP Graph
The HR x BP graph (Figure 7-6) shows the Heart Rate times systolic Blood Pressure
product in thousands over time.
ER Graph
The ER (ectopic rate) graph (Figure 7-7) shows ectopic beats per minute over time.
ST x HR Loop Graph
The ST x HR Loop graph (Figure 7-9) shows (by individual lead) the ST level in
millimeters over the Heart Rate. The graph below shows V4.
SpO2 Graph
The SpO2 graph shows the percentage of blood oxygen saturation over time.
For more information, see Automatic Blood Saturation Level (SpO2) Monitoring on
page 11-28
Ectopic Rate
Available: Rest, Exercise, and Recovery phases.
This automatic function calculates the ectopic rate and displays it in the ER box on the
Info Toolbar. This function can also control the generation of Ectopic Reports. Check the
check box to start Ectopic Reporting. Clear the check box to stop reporting. See Print
Ectopic Beat Report on page 7-32 for more information.
Note: The Ectopic Rate function is active only if you have set it up in the Procedure setup.
Filters
Available: Rest, Exercise, and Recovery phases
You can activate various filters to change the appearance of the waveforms and to make
reading them easier. If the filter button is set up to appear on your Info Toolbar, click the
filter(s) you want to make active or inactive
If the filter button is not set to show on the Info Toolbar, you can activate the filters using
the menu bar. Select Tools | Filters. The Filter Selection dialog box appears (Figure 7-11).
Click the filters you want to change. For an explanation of these filters, read the Physician’s
Guide to Signal Analysis.
Note: Do not make changes to the filter settings when you are printing reports or
waveforms.
Gain
Available: Rest, Exercise, and Recovery phases
To change the gain for the waveforms, select View | Gain from the menu bar.
Select the gain that shows the waveforms best. You can also change the gain without using
the menu bar. Or, press Shift + F1 (5 mm/mV), F2 (10 mm/mV), or F3 (20 mm/mV).
Changes made to the gain will not show on reports already in progress, for example, Write
Screen. The gain on a printed report will be the gain in effect at the time the report was
initiated. Final Report printouts (Worst Case, Average Beat Summary, and Peak Exercise)
are always printed at 10 mm/mV.
Note: Changing the gain only changes the ECG viewed or printed. It will not compensate
for low amplitude or poor quality ECG.
Grade
See Change Treadmill Speed or Grade on page 7-18.
Hold Stage
See Advance to Next Exercise Stage on page 7-11.
You can print the following reports by clicking on the corresponding icon:
1 2 3 4
You can also use the following function keys to print a report
1 12-lead Report (F5) 2 1 Page Write Screen (F6)
3 Write Screen (F7) 4 Average Beat Report (F8)
Figure 7-12: Example of the QRS Sync Lead Selection dialog box
Click the lead you want to change to. Click OK for the change to take effect. Click Cancel
to keep the same lead.
Rest Label
Available: Rest phase
The Rest Label indicates the patient’s position or physiological state when resting ECG
data was recorded. To add a Rest Label during the test, click the Rest Label icon in the
Info Toolbar. the Rest Label window appears (Figure 7-13).
Double-click one of the available selections in the bottom box. It will move to the top box.
You can drag a selection to the text edit area to append it to text you have entered. Click
OK to enter the Rest Label and close the window.
You can also type in your own Rest Label in the top box. If you want to add it to the drop-
down list, click the Save New Entry to Database check box.
The Rest Label is printed on every in-test report obtained during the Rest phase.
Speed
See Change Treadmill Speed or Grade on page 7-18.
ST Average Beat
Available: Overall Worst Case in Exercise and Recovery phases; Current Worst Case in
Rest, Exercise, and Recovery phases.
The overall or current worst case average beat is displayed (based on the criteria established
in the procedure) in the ST box on the Info Toolbar. This icon is displayed on the Info
Toolbar only if you have selected it in the procedure setup.
Note: Disconnecting and/or connecting leads in the Exercise or Recovery phases can cause
noise that could be interpreted as the overall worst case ST measurement.
Note: The current worst case ST measurement updates approximately every 10 seconds.
Start/Stop Belt
Available: Rest, Exercise, and Recovery phases
This button toggles between Start and Stop. Click the Start Belt button in the Info
Toolbar if configured. The treadmill belt will begin moving. The button changes to Stop
Belt. Click it to stop the belt. You can also perform the stop and start using the Scroll Lock
or Pause/Break keys (or the red keys, depending on your keyboard). Scroll Lock toggles
between Stop and Start while Pause/Break stops the treadmill.
Chapter contents
◆ Edit the Final Report Summary Page 8-2
◆ Fast Reports 8-4
◆ Review Mode 8-5
◆ Saving the Final Report Format 8-14
The left side of the window shows clinical data. Refer to this data while writing summary
observations. It is available for the following types of data:
Resting HR Maximum HR
Maximum Predicted HR % Max HR Achieved
Target HR % Target HR Achieved
Resting BP Maximum BP
Maximum HRxBP METs Achieved
Total Exercise Time Last Protocol Stage
Maximum Speed/RPM Maximum Grade/Workload
Worst case ST level Worst case ST slope
Minimum SPO2
Note: If your system has the Risk Scoring option, risk scoring parameters and values are
displayed on the left side of the dialog box. See Risk Scoring on page 11-21 for a complete
description of the Risk Scoring option.
The right side consists of dialog boxes to record observations: Reason for Ending Test, Test
Observations, and Test Conclusion. Click the tab label to make the selection active. The
1 2 3
Fast Reports
Use words or prepared phrases from the QuickLists utility to quickly annotate final
reports. Additionally, quantitative data is available for rapid entry into the final report. In
the Recovery phase of the procedure, the system can display lists with typical or
programmed statements to aid with the fast, efficient preparation of the final report. This
also reduces re-entering significant data and assures report accuracy.
Nearly every clinical parameter measured by the system is displayed in Recovery. Simply
double-click the data to insert it into the final report section you are editing — Reason for
Ending Test, Test Observations, or Test Conclusion. This unique capability improves
workflow, patient control, and record management.
Review Mode
Entering Review Mode ends the display of waveform data. You cannot resume monitoring
data unless you exit Review and start a new study.
Caution
! If you exit Review to start a new study, you must choose to save the study data if you want to
review that data at a future time.
After recovery you can review the current test. Click the Review Mode button.
Click Yes to the confirmation dialog box. In addition to the Edit Final Report button, six
buttons appear on the Tool bar. The Full Disclosure and Reanalysis buttons are disabled
(grayed out) if your Q-Stress system is not equipped with these options.
1 2 3 4 5 6
! Editing PDF files and replacing them on the Q-Stress system can lead to PDF data loss in the
event of report regeneration. Edited PDF files must be stored elsewhere on the network.
! Determine the necessary control of edits to Q-Stress reports in order to ensure the integrity
and correctness of the reports. Read and understand the Adding Security to Adobe PDF files
and Working with Signatures in the Adobe Reader manual before editing any Q-Stress
produced PDF file.
Note: Do not attempt to cancel print jobs by canceling them in the print queue as this will
affect subsequent Q-Stress printouts until the application is closed and restarted.
You can generate a diagnostic quality printout of the Final Report using Adobe Reader.
When printing from Reader use these settings:
◆ Set page scaling to None.
◆ Select Auto rotate and center pages print option.
◆ Select the paper source by PDF page size.
Use the printer setup in Adobe Reader to confirm or change these settings.
Click OK to save the test and return to the Q-Stress main screen.
If Q-Stress has the Full Disclosure option, the confirmation dialog box includes an option
to save the full disclosure data. Choose to save the full disclosure data to change the pages
appended to the final report at a later time. If you choose not to save the full disclosure
data, you will not be able to change your appended pages. In either case, appended pages
remain part of the final report.
If Q-Stress has the Q-Exchange option, the confirmation dialog box includes an option to
send the export files to the export folder.
If you choose not to save the study, the test data and test report are not saved.
If this registry key is not set, the XML file is not created. Otherwise, the XML files will be
generated each time the PDF file is generated. See Exporting data on page 11-6 for further
information.
! Only send email from Q-Stress. Do not receive email on the Q-Stress system.
To open the Final Report dialog box, select Setup | Final Report. The following screen
is displayed.
Change
Format Name
Name
Lead Set
Report
Pages
The name of the default final report format is shown. To change to a different report
format, click the down arrow and select a different format from the list. You can also
select the lead set in the same manner.
To make a format the default, click the down arrow to select it. When it is displayed in
the box, click the Set as Default box.
Note: When you are setting up your own report format, it is usually easier to start from
a report format with similar selections.
You can create as many formats for final reports as you need. Any section checked as
Include in Final Report becomes part of the final report. However, all recorded data is
saved in the database and it is possible to select another format for your final report
that includes data not included in the first report. The first report will be overwritten
as there can be only one final report file per study. You can regenerate your original
report by reselecting the report format you used to create it.
To create a report format, select Final Report from the Setup drop-down menu. Select
a report format similar to the format you want to create.
◆ If you want a different lead set, click the down arrow by the Lead Set box to display
the list. Click the desired lead set.
◆ Click one or more of the sections to make that section active. Make changes as
needed. Each tabbed section is described in the following pages.
Note: Look at each of the tabbed sections to make sure the setup is as you want it for
this particular report.
Note: The segment selections in a tab become active for selection only when you have
checked the Include in Final Report box. If you do not click this box, the items remain
inactive.
Note: The templates that appear in some of the tabbed sections are dependent on the
lead set selected for the final report.
Summary
Select the template to be used for the narrative section of the final report (Figure 8-3).
Tabular
Select the template you want to use for your report. Use the scroll bar to see the entire list
(Figure 8-4).
Worst-Case
Select the template to use for the worst case summary segment (Figure 8-5).
Averages
Select the template to use in your report (Figure 8-6).
Peak Exercise
Select this section to print the peak exercise test values as part of the final report. Select the
template you want for this report (Figure 8-7).
Graph
Select this section to print the trend graphs as part of the final report (Figure 8-9).
You can select the Quinton defined default trend graph template or customize up to three
trend graph templates.
A trend graph final report page can contain up to nine graphs. To customize the position
and selection of the graphs on the page, right-click the graph area you want to customize
(in Figure 8-10, the BP graph area is selected) and select the trend graph to place there.
You may choose these graph types:
◆ HR (Heart Rate)
◆ BP (Blood Pressure)
◆ HRxBP (Heart Rate x Blood Pressure)
◆ ER (Ectopic Rate)
◆ SpO2 (blood oxygen saturation point)
◆ STxHR Loop (ST Level by Heart Rate)
◆ ST LVL (ST Level) and lead to track
◆ ST SLP (ST Slope) and lead to track
Note: Choosing None causes no trend graph to appear in that graph area. At least one
graph needs to be selected for a template.
When you have positioned the trend graphs, click Save to save your changes and then click
Close.
In-Test Reports
To include in-test reports (those waveform reports printed during the test except for page
two and up of continuous Write Screen reports) in the final report, click the box in front
of In Test Reports (except Ectopic Beat Report) (Figure 8-11). Waveform reports selected
during the test, either timed or manual, except Ectopic reports, will be appended to the
final report. Only the first page of a Write Screen report will be included in the final
report.
To include the Ectopic Beat reports, click the Ectopic Beat Reports check box.
On systems with the Full Disclosure option, full disclosure pages may also be included by
selecting the Full Disclosure Pages check box.
The in-test reports and Ectopic beat reports printed during the test will be generated as
part of the final report if selected here. The selected Full Disclosure pages (see Full
Disclosure on page 11-9) will be generated if selected here on systems equipped with the
Full Disclosure option.
Chapter contents
◆ Database 9-2
◆ Final Report Repository 9-3
◆ Securing the Repository 9-4
◆ PDF Files 9-5
◆ Database Restore 9-11
◆ Purge the Database 9-12
Database
The data from each stress test is stored in the database that ships with the system. Q-Stress
uses Microsoft SQL 2005 as the database. PDF documents are stored as separate files that
can be managed separately from the database.
All Q-Stress data, including the final report, is stored automatically by the system. This is a
background process that occurs both during and after the stress test.
The Q-Stress database is shown as three partitions (Table 9-1) under the Database Service
window. Each partition allows for 80% capacity; the remainder is used by the Q-Stress for
system operations.
PDF Files
Q-Stress saves both the final reports and the full disclosure files (Full Disclosure option
only) in PDF format.
10. The CD will eject automatically. Remove and label it. Close the CD drive and store
the CD in a safe place.
If your Q-Stress is equipped with a secondary hard disk (either external or internal) or
if you are using network backup facilities, back up your PDF archive as follows.
11. Navigate to the PDF repository using Windows Explorer.
12. Open a second Explorer window pointing to the secondary hard disk or network
backup location.
13. Right-click the Patients folder and select Copy. Go to the second Explorer window
and click the backup folder. Right-click and select Paste.
14. Repeat for the Full Disclosure folder.
To recover space on your hard drive, you can archive PDF files to a CD-R disk (using the
DVD-RW drive, if available), a diskette, the secondary hard disk, if available, or a network
repository.
Note: Only the PDF repository should be archived. If you want the full disclosure files to be
archived they should be included in the final report setup template and appended to the
final report.
To copy PDF final reports to a CD-ROM, follow the instructions in Back up PDF Files on
page 9-5, selecting the specific patient folders you want to archive. Then delete the patient
folder and contents using Windows Explorer.
To copy PDF files from your Q-Stress system to diskettes do the following.
1. Make sure you have sufficient formatted empty 1.44 MB diskettes to store a large
number of files.
2. Navigate to the PDF repository using Windows Explorer.
3. Place a diskette in drive A.
4. Right-click the patient folder you want to archive and select Send To | 3 1/2" Floppy
(A).
5. Remove the diskette from the drive and label it with the patient's name.
Database Backup
You cannot use the Q-Stress system while the backup is in process.
Note: The backup can take several hours depending on how full the database is. It is best to
begin a backup before leaving for the day.
To back up your Q-Stress data to a secondary hard drive (if available) follow these steps.
1. Close out of any patient file.
2. Click Tools on the menu bar, then click Service | Database on the drop-down menu.
The following dialog box is displayed:
Note: Do not use the C:\ drive as your backup device. In the event of a catastrophic
failure of the drive, you could lose all of your data. Use a secondary drive for backups.
Note: Each backup path you create will only contain the most recent backup. Prior
backups will be overwritten. If your Q-Stress is equipped with a secondary drive, you
may store up to 12 backup sets on that drive. You should establish a location for new
backup sets using the New Folder button.
7. When you set the path you wish to use for your backup, click OK.
Database Restore
You cannot use the Q-Stress system while the restore is in process.
Note: The restore operation may take several hours when restoring full databases. You must
restart the application after a restore.
Note: Restoring an old database will overwrite any existing data, including but not limited
to existing stress studies that are currently saved by the system. To insure that no data is lost,
it is recommended that you back up your system prior to performing a restore operation.
To restore your Q-Stress data from the secondary hard disk (if available):
1. On the menu bar select Tools | Service | Database.
2. Click the Backup/Restore tab.
3. Click the Restore radio button.
4. Set the path to the directory containing the backup set you wish to restore by clicking
Browse.
Navigate to the back up path you want by using the drop-down list to select drives and
double-clicking on folders. You can only restore from a folder that has backup sets. Do
not create a new folder.
5. When you set the path you wish to use for your backup, click OK. Click Get List
button to search for a list of existing backups in the current backup folder.
Note: Select the single date entry listed.
! The Restore process overwrites all existing data on your hard drive. This includes templates
and user-selected defaults for the Q-Stress program.
! Purging data removes information permanently. If you back up your system before purging,
you can restore the purged data using the restore function. Do not purge any data unless
you have backed up the data or are absolutely sure you do not want it back. Be aware that
the purge operation takes a considerable amount of time (more than five hours for a very full
database). You cannot conduct studies during a purge operation.
Chapter contents
◆ Demonstration Mode 10-3
◆ Setting up the Procedure 10-4
◆ Setting up Protocols 10-17
◆ Set Up System 10-21
1
2
Click Save As to save the changed procedure or protocol under a different name. A dialog
box is displayed where you type in the new name. Click Save to save changes to the
existing procedure or protocol under the same name (these would be procedures or
protocols you have created).
If you click Close after you have made changes, a dialog box is displayed asking if you
want to save it under a different name. Click No to discard changes, or Yes to save it.
Demonstration Mode
The system ships with a demonstration mode that provides you with a way to train
technicians to use Q-Stress without interfering with real patient information or having to
use live physiological data.
The Demonstration (“Demo”) mode is activated or deactivated in the file menu. Demo
On toggles to Demo Off. The Q-Stress system starts with the Demonstration Mode
turned off. Activating Demonstration Mode allows the program to read a waveform file
that ships with the system. When the program is reading that file and displaying the
waveforms from the file, the word “Demo” is watermarked to differentiate from live data,
and a message box stating the waveform data is not live patient data is displayed in the
upper right corner of the waveform area of the window.
The user interface and display in the Demonstration Mode is no different than the user
interface and display in the live mode, with these exceptions:
◆ When you start the Rest phase with demo mode on, the system will create a new
patient. The new patient name is “Demo Patient” followed by the date and time. The
MRN is date and time. If there is an active patient when the Rest phase is started the
system will use the settings of the active patient for procedure, protocol and final
report. If there is not an active patient, the system default settings will be used. The
demo data is stored to the new patient.
◆ BP readings with a configured BP device are not initiated.
The reason for this change is to make sure that demo data is not inadvertently saved
with real patient data.
You can create an unlimited number of additional procedures. Each of the tabbed sections
contains parameters for the exercise test.
To create a new procedure:
1. Make changes as needed on the tabbed sections (each section is explained on the
following pages).
2. Click the Save As button. In the dialog box, type in the New Procedure name. Click
OK.
Note: It is not necessary to save the changes as you make them in each tab section. You
can make the changes to all sections and then save the procedure with the new name.
ECG Tab
Use this section to select Lead Set, Filters, Worst Case leads, and ST Measurement Point
(Figure 10-3).
Lead Set
Click the down arrow for Lead Set. A list of available lead sets is displayed. Select the set
you want to use with this procedure.
ST Measurement Point
Use the up and down arrows to fill in the number of milliseconds past the J-point where
you want the ST level and slope measured. Only the selected ST leads will be included in
the Worst Case Analysis.
Filters
Check the filters that you want to use. For a definition of the filters, refer to the Physician’s
Guide to Signal Analysis.
Worst Case
Click the down arrow to select the criteria for worst case. Click the check box in front of
the leads to select those you want to include in the Worst-Case Analysis.
Notification Tab
This section (Figure 10-4) allows you to set a base point for visual notification of unusual
rates.
Notifications
Click the check box in front of a parameter you want to use. Set the notification threshold
by using the up and down arrows.
Audio Notification
If you want an audio notification ten seconds before a stage changes, check this box.
Leads
Click the check box in front of the lead name to select the lead for notification in reference
to the two ST parameters.
Formulas Tab
This section (Figure 10-5) allows you to set formulas for METS Baseline, Target Heart
Rate, Maximum Predicted Heart Rate and Rate of Perceived Exertion.
Prompts Tab
The following section allows you to designate prompts at specified times during the stages.
The prompt tool includes settings for both staged and ramped protocols. Click the radio
button for staged or ramped.
Note: When you click the Prompt tab, the system will always display the setting for Staged
Protocol, even if you most recently changed the ramped settings, or if you only enter
settings for ramped protocols.
Indicate prompts for RPE, BP or user defined by entering a time in the Time After
column and double-clicking in the proper field.
Note: The RPE, BP, or User-Defined fields will not become active until you enter a time. You
cannot use the same time more than once.
To enter information in the User-Defined fields, click the User Defined header. It will
turn yellow with the cursor blinking. Enter your prompt. (Limit your prompt to 20
characters.) You can create three user-defined entries per time entry.
Note: If you select more than one User-Defined field per time entry, only the last one will
display.
Insert and Delete are used to insert or delete lines for a particular phase or stage.
Staged Protocol prompts are slightly different than Ramped prompts because they include
a Time Before end of stage prompt option in addition to the Time After start of stage
option. The Time Before prompts can be set to occur at the desired time subtracted from
the total minutes/seconds of the prescribed stage times.
Averages
You can select up to two averages to be displayed. The average beat waveforms will display
in the blue gridded area (either to the left or right of the wave forms depending on what
you select). Watermarks appear to remind you what average is being shown
R Resting Avg Beat
W Worst Case Avg Beat
C Current Avg Beat
Formats
Position the average beats on either the left or right side of the waveforms by clicking on
the down arrow for average beats. Select Right or Left.
Use the down arrow key to display the list for Annotation #1 and Annotation #2. Click
your selection.
Note: Annotation #1 and Annotation #2 must be different. If you set them the same, the
system will prompt you to set the annotations to different values when you attempt to save
the procedure.
Lead Format
Click the radio button in front of 3 Lead, 6 Lead or 12 lead to select the default format.
Click the down arrow next to each Lead Selection channel number to select the default
lead for each trace.
Note: Duplicate leads are not allowed in the Lead Selection box. If you enter a duplicate,
both leads will remain highlighted and you cannot save the procedure until you deselect
one of the leads.
Note: Both the lead format and lead selection can be changed while you are running the
stress test. See Data and Display Options on page 7-11.
To remove a box from the toolbar, click the item in the Select Information to Display list.
The check will be removed from the item and the box will disappear off the toolbar. You
may need to remove some items if you are moving boxes around and don’t have enough
space. After you have cleared a space, you can introduce it again by clicking on the check
box next to the item in the list.
Heart Rate
Displays the current heart rate of the patient.
BP/Previous BP
If you are using a blood pressure monitor, the blood pressure (and previous blood pressure)
rates can be automatically displayed in this box. If you are not using a blood pressure
monitor, you can enter the blood pressure in this box during the test.
HRxBP
This box shows the mathematical result of multiplying the current heart rate by the
current systolic blood pressure.
METs
This box shows maximum sustained METs value since the start of exercise (for treadmill or
ergometer exercise only). The calculation of METs is updated 50 seconds into a stage
based on actual speed and grade (or workload).
Note: To achieve METs with an ergometer, the rpm must be greater than 35.
Note: For ergometer studies, if you have entered the patient’s weight it will be used to
compute METs. Otherwise, a default weight of 150 lbs will be used.
RPE
Use this box to enter the rate of perceived exertion. Click the down arrow to display the
numerical list. Select a number corresponding to the patient’s rate of perceived exertion.
Ectopic Rate
This box displays the number of ectopic beats per one-minute time interval. It also
includes a check box to enable or disable Ectopic Beat reports.
Stage Time
This box shows the total time expended for the current stage.
Exercise Time
This box shows the total time expended since you started the Exercise phase.
Protocol/Stage
This box shows the current protocol you are using. It allows you to change to a different
protocol during the test. It shows current stage for the protocol you are using, as well as
letting you hold the stage or manually advance to the next stage.
Speed/Grade (Treadmill)
This box shows the current speed and grade. It also allows you to manually increase or
decrease the speed and grade.
Note: Manually increasing or decreasing the speed and grade takes you out of the current
protocol. To return to an automatic protocol, you must select it from the Protocol box.
RPM/Workload (Ergometer)
This box shows the current RPM and workload. It also allows you to manually increase or
decrease the workload.
Note: Manually increasing or decreasing the workload takes you out of the current
protocol. To return to an automatic protocol, you must select it from the Protocol box.
Start/Stop
This box toggles the treadmill belt between Start and Stop.
Filters
This box allows you to select filters for the ECG waveforms. Refer to Appendix D for an
explanation of the filters.
SpO2
This box allows the entry of a patient’s blood oxygen saturation level. If Q-Stress includes
the SpO2 reporting option, this box automatically updates with readings from a Tango
Plus monitor.
Print Options
If you would prefer a paperless test, you may turn the in-test report printing off here
(Figure 10-13). The reports will still appear in the final report, both printed and PDF. A
continuous Write Screen report will still be printed; all other reports will be electronic.
Print Options
If you would prefer a paperless test, you may turn the in-test report printing off here
(Figure 10-13). The reports will still appear in the final report, both printed and PDF. A
continuous Write Screen report will still be printed; all other reports will be electronic.
Timed Reports
When you click the Timed Reports tab, the system will always display the Staged Timed
Reports setting, even if you most recently changed the ramped settings, or if you only
enter settings for ramped timed reports.
The Timed Reports tool includes settings for both staged and ramped protocols. Click the
radio button in front of Staged or Ramped.
Caution
! The system will allow you to set up timed reports in intervals as low as one second. However,
the laser printer takes several seconds to print each page. Printing more than two timed
reports per minute using the laser printer may affect system performance and could result in
loss of data.
Note: The 12-lead and Average Beats fields will not become active until you enter a time.
You cannot use the same time more than once.
To insert a time between already created timed reports, click the arrow in the left column
just above the line where you want to insert a new time. Click Insert. A blank line is
inserted.
To delete a line, click the line and click Delete.
Setting up Protocols
Standard protocols are part of the Q-Stress product. However, you can set up your own
protocol by selecting one of the standard protocols as a template and renaming it. You can
customize an unlimited number of additional protocols for each device.
Note: Only the first 30 steps of a protocol with more than 30 steps are printed. The
remainder of the exercise and recovery stages do not print. The stress test is unaffected.
Note: You are limited to 99 stages in any one protocol and 200 minutes per patient study
(including Rest and Recovery stages).
2. Select the device for which you want to create your customized protocol.
a. Click the down arrow under Exercise Device.
A drop-down menu appears.
b. Click the device you are using.
The names in the Protocol Name box change to those protocols for that device.
For example, for the Treadmill exercise device, this drop-down menu appears
(Figure 10-17):
If you select a different Protocol Name before saving your changes, you are prompted
to save your customized protocol or lose your work.
3. Select a protocol close to the one you want to create. It will be shown in the Protocol
Setup window (Figure 10-18).
4. Click a cell to modify. Up and down arrows appear next to the cell.
5. Click an arrow to change the data in the cell to meet your specification.
Note: You cannot type data into the cells.
You cannot change the cells in the METs column. The values in that column are
calculated based on the values in the other columns. They cannot be changed
manually.
6. After making all changes, click Save As. A dialog box (Figure 10-19) prompts you to
name this protocol.
Ergometer Protocol
Add customized ergometer protocols using the same directions as given for creating a new
treadmill protocol.
Pharmacological Protocol
You can also add customized pharmacological protocols using the same directions as given
for creating a new treadmill protocol.
Set Up System
Various lists, devices and the measurement unit used in the test must be set up before
beginning the test. Click Setup and then click System (or press Ctrl+S). The System Setup
window opens (Figure 10-22).
The four tabs allow you to set up lists, external devices, printers and the format for the
optional Q-Exchange feature.
Note: Click Save at any time to save changes made on any of the four tabs.
Lists Tab
There are fifteen lists available in Q-Stress
Rest Labels
Comments
Diagnosis X
Clinical Procedure X
Test Conclusions X
Test Observations X
Personnel
Locations
Medications X
Med Settings X
Resting ECG
Billing Codes
Rest labels, Comments, Personnel, Institution, Locations, Resting ECG, and Billing
Codes lists are shipped blank from the factory. You need to fill in information specific to
your facility. Use of a preset list is optional. However, you will find that after taking the
time to set up the list, patient entry is easier, faster, and more accurate.
Note: The size of the field box does not indicate the number of characters you can enter. To
see the entire entry, you can resize the column (by selecting the edge of the label and
moving it) or you can triple-click to go to the edit mode. Use the right and left arrow keys to
move about in the field.
To add, edit, or delete an entry in a list, click the name of the list. The list name will turn
bold and the radio button will be selected. The sample below shows the Test Observations
list.
To add a new person, click New. A new line is entered at the bottom of the list. Type in
the information. Before adding a new entry, make sure that it is not already present.
Note: Check spelling, use of initials, nicknames, etc. (for example, one person may enter a
physician as “Smith, Steve” while another may enter the same physician as “Smith, Steven.”
Note: Entering more than a thousand physician or technician names can slow down the
retrieval rate considerably. Remove unneeded physicians and technicians to speed up the
retrieval time.
To edit an existing entry, triple-click the item. This will take you to the edit mode and
allow you to place the cursor within the text so that you can type new data or delete the
current information.
To delete an entire line, select the line and click the Delete button.
Changes to these lists are made the same way. Click the list you would like to change. The
list is displayed at the bottom of the window (Figure 10-25).
Click New to add a new entry. Type in the text. If you have a long list, you might begin
with a keyword so that you won’t have difficulty locating your entry. For example, if you
begin your sentence with “the”, all those entries will be sorted to the “T” portion of the
list.
Note: Watch your spelling and grammar. This list is available to all users. Check the entries
to make sure you are not duplicating a similar one. For example, one master entry might
read “The patient showed signs of fatigue.” Since this would be sorted to the T section of the
list, another person might add the entry “Patient showed signs of fatigue.” The program
would not consider this a duplicate entry.
To edit an entry, triple-click the item. This will take you to the edit mode and allow you to
place the cursor within the text so that you can type new data or delete the current
information. Use the backspace key to delete text you do not want.
To delete an entire line, select the line and click the Delete button.
The Location list is the drop-down list for location on the Environment tab in patient
entry (Figure 10-26).
Note: You must enter Institution information in order to use the Department and Location
items.
To edit an entry, triple-click the item. This will take you to the edit mode and allow you to
place the cursor within the text so that you can type new data or delete the current
information. Use the backspace key to delete text you do not want. All medications are
assigned to the All Medications class in addition to any class you specify.
Note: Note that the medication class can be changed independently of the medication
name.
To delete an entire line, select the line and click the Delete button.
The Med Settings list shows medication settings such as dosage unit, frequency and
delivery method. Click the tab for the one you want to change. Each consists of a one-line
entry. Follow standard usage for your facility.
Device Tab
Click this tab to assign specific devices to the COM ports.
This dialog will let you configure up to two devices for the system, typically an exercise
device and an optional BP monitor. Once a device type and model has been selected it can
be assigned a COM port. To do this, highlight an available device and click the > arrow to
select it to one of the two device slots. Then select the desired COM port. To remove a
device click the corresponding < arrow. Clicking the << button removes all devices.
Note: You cannot assign two exercise devices to the COM ports at the same time. For
example, assigning a treadmill to COM 1 and an ergometer to COM 2 is not allowed.
Note: When you select a treadmill you need to select the treadmill type and a speed range.
If you are using the demonstration mode, use Demo.
Note: Selecting an ergometer that contains a BP Monitor will remove the BP Monitor
selection from the list of available devices.
You also use this tab to select the 50Hz/60Hz Filter. You can select the line filter to filter
AC power line noise. Make your selection based on your power supply. The default is set
to 60 Hz.
Printer Selection
Click this tab (Figure 10-30) to configure the Q-Stress program for the printer attached to
your system. There are two choices: laser and chart recorder. Click the radio button in
front of the one you want to use. Click A or A4 to select the paper size you are using
These settings are used to configure the formatting of the reports only and will not affect
the system settings for the installed printer.
Click Save to save your changes and Close to return to the main menu.
If the system default printer is changed while Q-Stress is running, the Q-Stress application
must be recycled before the change can take effect.
This directory is shared on the Q-Stress system with the Network option. Any user on the
network may access the PDF files.
Note: To restrict user access to the network PDF files, see Securing the Repository on
page 9-4.
each time a new folder is selected. Place your PDF files in a location you will remember, as
this is your final report repository.
Chapter contents
◆ Custom Reports 11-2
◆ Q-Exchange Patient Data Export and Import 11-6
◆ Full Disclosure 11-9
◆ Reanalysis 11-13
◆ Freeze Frame 11-18
◆ Risk Scoring 11-21
◆ Automatic Blood Saturation Level (SpO2) Monitoring 11-28
◆ Ramped Protocol Generator 11-29
This chapter describes optional features for Q-Stress that are provided separately from the
standard Q-Stress software.
Custom Reports
The custom report template enables summary reports to be formatted with the
information that you specify.
Note: To create custom reports, Microsoft Office InfoPath 2007 must be installed on the Q-
Stress computer.
! Use only this procedure to create custom report templates. Using other methods may make
the template unusable.
4. In the dialog box (Figure 11-2), click OK to start InfoPath. You may receive a warning
from InfoPath. Ignore the warning and click OK in the warning dialog box.
1 2
Figure 11-3: Example of the Infopath Designer window
! Use InfoPath only to design custom forms. Do not publish or register a form with InfoPath.
All forms used by Q-Stress are unregistered.
! Use only the template provided or a form that is derived from it to design custom report
pages. Forms made from other master templates may cause an error during printing.
Note: Here are some tips for working with the Infopath Designer:
To place a field onto the canvas, drag the field from the list and drop it on the
canvas at the desired location.
Form data consists of at least two parts: the label and the data field. You can edit
the text in the label. You can also control how much space to use for printing the
data value.
Choose Numbered list to best display a repeating field type, such as
medications or diagnosis. Format these fields in the same way as single item
fields.
Use layout tables to align fields and labels. The master template uses layout
tables heavily. See the master template for examples of layout tables.
To change settings of all items on the form at once, use Select all.
Use only the fonts used by the master template.
2. After editing the form, select File | Save As… to name and save the form.
If you use a form other than the master form, you can use Save or Save As at any time.
Do not use Save As Source.
Caution. Printer error.
! Having XSN forms with the same name will cause an error when printing. Names must be
unique.
The name must be less than 50 characters long. Q-Stress ignores longer names.
Do not make copy of any XSN form, and rename and import into QStress. This will
render both forms—the original and the renamed one—unusable. Instead, use the
Final Report Setup functions to edit the original XSN form, ‘Save As’ to a different file
name and store to the proper folder.
3. Select a location to save the form.
Custom reports must be stored in the ReportTemplates\FinalReport folder, found in
the Q-Stress installation folder. Otherwise, Q-Stress will not import the report.
Figure 11-4: Example of the Import Custom Report Template dialog box
The removed form can be re-imported (see Importing Custom Pages into Q-Stress on
page 11-5). To have a custom final report use the re-imported form, select the form and
click Activate. Otherwise, an error will occur when using that report format to print final
reports.
Configuring Q-Exchange
You configure the data format version and identify export and import directories through
the Q-Exchange tab in System Setup (see Q-Exchange Tab (Q-Exchange Option Only) on
page 10-30).
To select the Q-Exchange data version:
◆ Select the appropriate version from the drop-down menu.
You use the same method to select both the export and import directories.
To select an export or import directory:
1. For the appropriate location, click Browse in the Storage Configuration section.
2. In the file browser, select the directory (or create a new one) and click OK.
Note: The directory can be local or on the network. By default, the directories are
located at C:\Cardiac Science\Stress.
Exporting data
The Q-Stress Q-Exchange option creates files in XML format. The XML, PDF final
report, and binary full disclosure files are written to the export directory.
The exported files are intended for use with third party reporting packages that can use
XML and other data, running on other computers on the network. They are not intended
to be an import mechanism to Q-Stress.
Data exported consists of these types:
◆ PDF final report—See Chapter 8, Final Reports, for more information
◆ Stress report—Patient demographics, institution, test setup, and summary
information
◆ Stress events—Heart rates, blood pressures, speed and grade changes that occur during
the test
◆ Report ECG—In-test report ECG waveform
◆ Average beats—Average beat waveform and measurements such as ST level and slope
One or more files are output to the export directory for each option you select. The set of
files output may be several megabytes in size, depending on the length of the test.
Files are named with the date, time, and MRN. The type of data in each file is identified
with an addition to the name or a file extension:
*.fds—Full disclosure binary; Waveform data is saved in binary format with a meta-data
header. The header includes such information as bytes per sample, sample rate, and
resolution.
*.pdf—Final report PDF; this file is written regardless of what options are selected.
*_EV.xml—Event data in XML format; includes all heart rates, blood pressure
measurements, speed and grade changes, protocol changes. The data is time based and
associated with a sample number. Samples are taken at 500/second. For example, a
sample_number value of 2000 means the reading was taken at four seconds into the
test. This file is written by default if the Report ECG, Average Beat, or full disclosure files
are exported.
*_SR.xml—Stress record in XML format; this file is written regardless of what options
are selected.
Examples of the XML files are located on the Q-Stress application CD. (The data is
sample data and not from an actual patient, and the diagnoses are not meant to be
correct.)
Importing data
Q-Exchange enables the import of patient demographics (MRN, Last Name, First Name,
Middle Name, SSN, gender, and date of birth) and other data from an XML file. On
import, the XML is validated with the Q-Exchange schema.
A sample import file for each format version is available on the Q-Stress application CD.
The following rules apply:
◆ Data for each patient must be contained in its own file.
◆ All processed XML files are deleted from the import directory; files that do not
validate to the schema are not deleted.
◆ If errors are encountered, Q-Stress renames the invalid XML file with a .txt
extension.
◆ Q-Stress imports the information as part of the Patient Registration function.
◆ Once the Patient Search finishes, all of the allowable XML files have been imported.
◆ Q-Stress limits the import to 100 patients at a time. You can restart the import process
by re-opening the Patient Search dialog box.
◆ The social security number data must be in the 11-character format (9 digits and 2
dashes: XXX-XX-XXXX).
◆ The date of birth data must be in the same date format as the Q-Stress operating
system setting.
◆ On Version 2.0.0 and higher configured systems, the Order Number, Billing Code,
Message ID, and Expansion fields are returned in the XML Export. The Order
Number and Billing Codes may be changed in the Q-Stress user interface, while the
Message ID and Expansion fields cannot.
◆ Version 4.0.0 imports up to three billing codes per patient.
Full Disclosure
On Q-Stress systems equipped with the Full Disclosure option, a continuous log of the
patient’s traces is generated for the duration of the Exercise and Recovery phases of the
study. This gives you the ability to review every beat under exercise and recovery, and then
add any additional data that may be needed to the final report.
Full Disclosure data may only be viewed in Review mode using the View Full Disclosure
button.
1 2
1 Page List
2 Displayed Beats
The Displayed Beats consist of ten seconds of data shown as a PDF page starting at the
time highlighted in the page list. The displayed lists can be zoomed or individually printed
using the Adobe Acrobat Reader controls.
The Page List gives you the ability to quickly view every beat or just the Ectopic beats, as
well as attach them to the final report. The list is broken into 3 distinctive parts, each with
a specific function: the Page Attachment bar, the List of Pages, and the Navigation Bar.
1 2 3 4 5
Select All The Select All button is used to mark all of the pages in the Page List to be
attached. Attached pages are then appended to the Final Report using the Attach and
Close button.
Note: The hot key combination for this function is Alt+2.
Select All Ectopic Page(s) The Select All Ectopic Page(s) button is used to mark all of
the pages with ectopic beats on them (designated by the letter E appended to the title) to
be attached. Attached pages are then appended to the Final Report using the Attach and
Close button.
Note: The hot key combination for this function is Alt+3.
Unselect All The Unselect All button has the opposite effect of the Select All button. It
is used to mark none of the pages in the Page List to be attached. This button is effectively
an undo for page selection.
Note: The hot key combination for this function is Alt+4.
Attach and Close The Attach and Close button appends the selected (designated by a
check mark) pages into the Final Report and closes the Full Disclosure window. The
appended Full Disclosure pages are then added to both the printed Final Report and the
PDF file. If you save the Full Disclosure information (see Saving the Test on page 8-7), you
can review the study at any time and revise your selections. If you choose not to save your
Full Disclosure data, you lose the ability to revise your changes.
List of Pages
1 2 3 4 5 6
The List of Pages gives navigation cues and attachment status of the Full Disclosure data.
There are five pieces of information for each 10-second snapshot of Full Disclosure data.
Column Description
Check box. The check box indicates whether the page will be included in the Full
Disclosure pages attached to the final report. This check box can be clicked on to
1
toggle the attachment, and it can also be controlled through the Select/Unselect
Current Page button.
The stage indicator. Full Disclosure data is only available in the Exercise and
Recovery phases of the study; data from the Rest phase is never included in the Full
2
Disclosure data. The second column will either be populated with the number
corresponding to the exercise stage or the word “Recov.”
Time indicator that counts the time into the exercise stage or recovery. This column
3
will normally be in increments of ten, as each page represents 10 seconds of data.
Populated only for data from the Exercise phase of the study. It is a time count of
4
the total exercise time for the patient.
The Heart Rate achieved at the start of the 10 seconds shown on the page. It
5
corresponds to the Heart Rate shown in the page header.
The Ectopic indicator. If Q-Stress detected an Ectopic beat during the 10 seconds
represented by the page, the List of Pages will display a “-E” in this column. This can
6
be used to provide a quick navigation cue as to which pages of the study may be
significant.
Clicking on a page title causes the row to become highlighted and the page to be displayed
in the Displayed Beats portion of the Full Disclosure window. Clicking on the page title
again toggles the check box to include the page in the final report.
Navigation Bar
The Navigation Bar allows you to quickly display pages in the Displayed Beats portion of
the Full Disclosure window.
1 2 3 4 5 6
1 First Page
2 Previous Ectopic
3 Previous Page
4 Next Page
5 Next Ectopic
6 Last Page
First Page The First Page button navigates to the first page in the List of Pages. This
button is disabled until you navigate past the first page in the List of Pages.
Note: The hot key for this function is Home.
Previous Ectopic The Previous Ectopic button navigates to the first page with an
Ectopic Beat that occurs before the page currently displayed. If there are no pages with
Ectopic beats before the currently highlighted page, the Previous Ectopic button is
disabled. This button will also be disabled if there are no Ectopic beats in the Full
Disclosure data.
Note: The hot key for this function is Page Up.
Previous Page The Previous Page button navigates to the previous page in the List of
Pages from the currently displayed page. If you are viewing the first page, this button is
disabled.
Note: The hot key for this function is the up arrow.
Next Page The Next Page button navigates to the next page in the List of Pages from
the currently displayed page. If you are viewing the last page, this button is disabled.
Note: The hot key for this function is the down arrow.
Next Ectopic The Next Ectopic button navigates to the first page with an Ectopic Beat
after the page currently displayed. If there are no pages with Ectopic beats after the
currently highlighted page, the Next Ectopic button is disabled. This button will also be
disabled if there are no Ectopic beats in the Full Disclosure data.
Note: The hot key for this function is Page Down.
Last Page The Last Page button navigates to the last page in the List of Pages.
Note: The hot key for this function is End.
Reanalysis
The Reanalysis option provides you with a mechanism to review a complete test after the
procedure has ended. The built-in analysis tools allow the modification of the original
isoelectric points and ST levels to adjust for additional data gathered by the reviewer or to
compensate for physiologic changes during the test. The resting data remains displayed
throughout the review for comparison to study data. Individual and multiple leads can be
re-analyzed using the new isoelectric points for “Holter-like” review of the leads of interest.
The original isoelectric points and ST levels are held in memory so the data can be re-set
for secondary re-analysis using new data points.
Several comparison and trend graphs are displayed for additional clinical review. The
perspectives of parameters such as BP x HR, BP/HR, and ST level and slope graphs,
provide fast visual indicators of physiologic trends.
The tools also provide for rapid review (forward and backward) of the entire test so the
impact of modified settings can quickly be assessed. This enables you to modify settings
and re-evaluate patients under numerous clinical parameters several times quickly and
efficiently, yet without additional patient risk.
In Review mode, you can enter Reanalysis using the toolbar button circled above
Figure 11-8).
Clicking the Reanalysis button opens the Reanalysis window (Figure 11-9).
The Reanalysis window opens with the current average beat set to the worst case average
beat for the study. The last Resting average beat is displayed on the left and the current
average beat is located on the right. The time frame for the current average beat is
indicated above the beat display. The lead is indicated by the Lead Selection drop-down
list boxes.
You can superimpose other leads from the same point in time by selecting the drop-down
boxes labeled Additional. The average beats are color coded for convenience in
determining what is being displayed.
1 2 3 4 5
1 Go to first beat
2 Play/stop play
3 Go to last beat
4 Go to previous beat
5 Go to next beat
The vertical scroll bar next to the current average beat is used to move the baseline up and
down in the window. The horizontal scroll bar controls the time dimension of the display.
The “thumb”, or button in the center of the scroll bar, gives an indication of the location
in the test of the current average beat. By moving it or using the Previous Beat or Next
Beat buttons, you can slowly scroll through all of the beats of the test for the displayed
leads. To move more quickly, the Go to First Beat and Go to Last Beat buttons displays
beats at the beginning or end of the study.
original positions as determined by the original procedure. An edited J+ point affects all
average beats of the study. Changes to the isoelectric or J point will affect all average beats
only if the average beat group (for example, study time) is being edited. Once you have
saved the new measurement points, the study will be updated and new worst case
information calculated. The final report will be annotated with a “Reanalyzed” footnote to
indicate that the measurement points are not as specified in the procedure setup.
WARNING. Misdiagnosis.
Note: Full Disclosure pages are not footnoted nor do the ST values on Full Disclosure pages
change.
Note: The J+ point can be changed for all studies using custom procedures and does not
have to be set on a case by case basis.
Note: Changes to measurements points will only affect worst case if you use a procedure
that bases worst case on the ST Level.
1 2 3 4
Go to Worst Case
Click a Go To button to jump to either the worst case beat of the current lead or the
overall worst case beat in the study. A Go To button is disabled (greyed out) when you are
on the respective worst case beat. When the displayed average beat is not the worst case the
button is again enabled.
Zoom In/Out
The Zoom button toggles your view between normal and maximum size. Click Zoom to
change the horizontal and vertical gain to the normal size for the window. To restore the
display to maximum size, click the Zoom button again. This makes finding the hash
marks and monitoring their position much easier.
Note: The Reanalysis windows opens with the view at maximum zoom.
Trend Graph
The Trend Graph display (Figure 11-11) at the bottom of the Reanalysis window
represents the study trend data most pertinent to alteration of the measurement points. Six
graphs are represented: ST Level/Slope for the current lead, ST x HR for the current lead,
HR x BP, HR, ER, and BP. The graphs displaying lead data about the current lead change
when the current lead is changed. Click the Update button on the right to update the
graphs based on the new measurement points without saving the data.
Freeze Frame
The Freeze Frame option allows total recall of ECGs during a test. You can “freeze” a 10-
second strip of multi-lead ECG on-screen below the “live” ECG., enhancing your ability
to electronically review previous data for anomalies during the test while continuing to
monitor the patient's real-time data. The 10-second viewable window can be moved
forward and backward to display sections of the test from the start of the study to the
current time of the test. From this screen you can print various reports for any time period
of the test while continuing to monitor the patient's current ECG output.
Note: You can also press Ctrl+Z to open the Freeze Frame window.
pane. Freeze Frame continues adding data to the right of the pane, refreshing
approximately every second with the latest data.
1 2 3 4 5 6
Changing the Displayed Leads You can change the displayed leads in the Freeze
Frame pane, just as you can in the live waveform display. Click any lead label in the Freeze
Frame pane and select the new lead selection. Lead selections in the Freeze Frame pane
have no effect on the live waveform display.
Scrolling the Freeze Frame Pane There are two scroll bars in the Freeze Frame pane.
Use the vertical scroll bar to show the leads that do not fit in the Freeze Frame pane. Use
the horizontal scroll bar to move the Freeze Frame display through time. Scrolling
horizontally to the left moves further back in the study; scrolling to the right moves the
Freeze Frame waveform closer to the current “live” waveform.
Note: The horizontal “thumb” or button in the middle of the horizontal scroll bar can
appear to shift left and change in size as you observe the Freeze Frame pane. This occurs
because the pane is updated every second with the latest waveform data. The thumb
represents the approximate position in the total study time you are observing. Its size is
inversely proportional to the total size of the data available (more data results in a smaller
thumb).
Risk Scoring
The system includes a risk scoring option based on the Duke, Framingham, and
Functional Aerobic Impairment (FAI) algorithms to provide additional prognostic
capability to the clinician. Using demographic, lifestyle, and cardiac exercise stress test
data, Q-Stress can calculate a patient's risk score using these indices. With the addition of
a few simple data points, any patient can be scored relative to a broad patient sample with
a similar profile. The scores are readily available for addition to the final report.
Note: The Duke Treadmill Score is designed to only work with the Bruce protocol and a
standard 12-lead configuration with lead aVR excluded from worst case detection. Q-Stress
does not force this configuration on the user but depends on the user to conform to these
requirements by their selection(s) when configuring the system for a test.
Note: Framingham algorithms are provided by the National Heart, Lung, and Blood
Institute as a part of the National Institutes of Health and the U.S. Department of Health and
Human Services.
Note: Users of the Framingham risk algorithm should be aware of several caveats:
◆ The risk estimating score sheets are only for persons without known heart disease. The
Framingham Heart Study risk algorithm encompasses only coronary heart disease, not
other heart and vascular diseases.
◆ The Framingham Heart Study population is almost all Caucasian. The Framingham
risk algorithm may not fit other populations quite as well.
◆ For some of the sex-age groups in Framingham, the numbers of events are quite small.
Therefore, the estimates of risk for those groups may lack precision.
◆ Other organizations are considering how the information from the Framingham risk
algorithm, as well as other assessments of risk, might best be incorporated into clinical
practice. As new information and guidelines become available, they will be added.
◆ The Framingham risk score estimates the risk of developing CHD within a 10-year
time period. This risk score may not adequately reflect the long-term or lifetime CHD
risk of young adults, which is: one in two for men and one in three for women.
◆ The presence of any CHD risk factor requires appropriate attention because a single
risk factor may confer a high risk for CHD in the long run, even if the 10-year risk
does not appear to be high.
◆ Since age is a prominent determinant of the CHD risk score, the 10-year hazards of
CHD are, on average, high in older persons. This may over-identify candidates for
aggressive interventions. Relative risk estimates (risk in comparison with low risk
individuals) may be more useful than absolute risk estimates in the elderly.
◆ The score derived from this algorithm should not be used in place of a medical
examination.
• Source: Wilson PWF, D'Agostino RB, Levy D, Belanger AM, Silbershatz H,
Kannel WB. Prediction of coronary heart disease using risk factor categories.
Circulation 1998;97:1837-1847
Framingham
The Framingham algorithm requires information in three additional fields: smoker,
diabetic, cholesterol.
Smoker
Select whether or not the patient is a smoker.
Diabetic
Select whether or not the patient is a diabetic.
Cholesterol
Enter total cholesterol or LDL cholesterol and HDL Cholesterol in mg/dl. Select Total or
LDL by clicking the appropriate radio button.
Note: The Framingham algorithm requires entering patient age and gender.
Duke Treadmill (TM) The Duke TM algorithm requires the Angina index to calculate
risk. The Angina index is available on the Edit Final Report window (see Chapter 8, Final
Reports for more information on editing the final report) in either the Recovery or Review
phase.
There are three values for the Angina index drop-down selection:
◆ None if the patient had no angina during exercise
◆ Non-limiting if the patient had angina that did not cause them to stop exercising
◆ Limiting if angina was the reason the patient stopped exercising
Enter any or all of the Risk Scoring data into the final report by double-clicking on
the value in the Edit Final Report window. The data will be pasted into the final
report in the tab you have selected. See Chapter 6 for more information on editing the
final report.
Functional Aerobic Impairment Source: American Heart Journal; April, 1973 Vol.
85, No. 4, pp. 546-562; titled, “Maximal oxygen intake and nomographic assessment of
functional aerobic impairment in cardiovascular disease”
FAI = (1 – (VO2 max observed/ VO2 max predicted)) x 100
Where VO2 max observed = 6.70 – 2.82 (Gender) + 0.056 (exercise time in sec.) and
Male = 1, Female = 2
Where:
◆ VO2 max pred = 69.7 – 0.612 (age in years); Active men
◆ VO2 max pred = 57.8 – 0.445 (age in years); Sedentary men
◆ VO2 max pred = 44.4 – 0.343 (age in years); Active women
◆ VO2 max pred = 41.2 – 0.343 (age in years); Sedentary women
Where the allowable age range is 15 to 75 years old for both men and women. Age entries
outside the range use an age of 15 or 75 years, whichever is closer.
FAI interpretation:
◆ -27 to 26% Normal
◆ 27 to 40% Mild Impairment
◆ 41 to 54% Moderate Impairment
◆ 55 to 68% Marked Impairment
◆ over 68% Extreme Impairment
Framingham
Source: Wilson PWF, D'Agostino RB, Levy D, Belanger AM, Silbershatz H, Kannel WB.
Prediction of coronary heart disease using risk factor categories. Circulation
1998;97:1837-1847.
Figure 11-16: Sample Score Sheet for Estimating Coronary Heart Disease Risk
Note: Age entries outside the range use the end point age, whichever is closer to the out-
of-range age entered.
As an illustration for using the score sheets, consider a 55 year old man with a total
cholesterol of 250 mg/dL, HDL cholesterol of 39 mg/dL, blood pressure of 146/88,
diabetic and a non-smoker.
The algorithm uses the Total Cholesterol Score Sheet when total cholesterol and HDL
cholesterol are available, and the LDL Cholesterol Score Sheet when LDL cholesterol and
HDL cholesterol are available.
Dividing the subject's risk by the low risk provides an estimate of the relative risk, where
31% divided by 7% = 4.4, meaning that coronary risk for this individual is approximately
4 times that of a man the same age with a low risk profile.
Note: Q-Stress does not calculate comparative or relative risk.
The average and low risk of CHD over 10 years for a 55 year old man are 16% and 7%
respectively. The average risk was derived from the experience of Framingham men and
women, using their average risk factor levels to provide the estimates. The low risk was
calculated using the following factors:
◆ persons of the same age
◆ optimal blood pressure
◆ total cholesterol 160-199 mg/dL
◆ HDL cholesterol 45 mg/dL for men or 55 mg/dL for women
◆ non-smoker
◆ no diabetes.
Duke Treadmill
Source: Mark, DB, Shaw, L, et al, Prognostic value of a treadmill exercise score in
outpatients with suspected coronary artery disease; New England Journal of Medicine,
Sept. 19, 1991: 325 (12) 850.
Enter any or all of the Risk Scoring data into the final report by double-clicking on the
value in the Edit Final Report window. The data will be pasted into the final report in the
tab you have selected. See Chapter 6 for more information on editing the final report.
4. Press Tab to move between fields or click a field to select it. You can type in a number
or use the scroll arrows to change the value.
• For a treadmill, type the speeds and grades for the Rest, Exercise, and Recovery
phases. Also add the duration of the Exercise phase.
• For an ergometer, type the maximum workloads in watts for the phases. Also add
the duration of the Exercise phase.
Note: The maximum Rest speed and grade must be less than the Exercise values.
Recovery values also must be less than Exercise values.
5. Click OK.
6. Enter the name of the protocol in the dialog box that appears.
7. Click OK.
The new protocol becomes the active one and appears on the Protocol Setup screen.
8. Click OK to close Protocol Setup.
3. Click the Customize Protocol button, which is next to the Protocol field.
The Custom Protocol Generator screen appears.
• For a treadmill, type the target METs, maximum speed, and the duration of the
Exercise phase.
• For an ergometer, type the target METs and the duration of the Exercise phase.
4. Click OK.
Q-Stress creates the protocol for the patient. The protocol is named with the creation
date and time.
Ergometer ramped protocols are calculated with the patient’s weight. If a patient’s weight
entry changes, Q-Stress detects this change and automatically adjusts the protocol’s
workload, keeping the METs value the same.
For any custom protocol, if the METs baseline value is changed in the Procedure Setup
Formulas tab, Q-Stress detects this change and automatically adjusts the protocol
parameters.
For more information about using the Protocol Setup screen to adjust a protocol, see
Setting up Protocols on page 10-17.
Chapter contents
◆ Software Troubleshooting 12-2
◆ User Messages/Errors 12-3
◆ Service Tests 12-13
◆ Self Test 12-13
◆ Performance Test 12-14
◆ Leads Off Test 12-15
◆ Service Report 12-17
! If at any time you suspect your Q-Stress system is not working properly, immediately contact
Cardiac Science Corporation Technical Support.
Software Troubleshooting
4. Click the down arrow by Application Language. Select Choose at application startup.
5. Close and re-open Adobe Reader.
6. At the Reader window, select the language of choice from the drop-down list.
7. Click OK.
User Messages/Errors
Ergometer
Attach ergometer interface
Ergometer interface cable to the COM port of the
cable is PC. Make sure the COM port is
disconnected or not correctly selected in system
The ergometer The ergometer connected properly. setup.
communication is communication is
disconnected. disconnected.
Ergometer control
mode is not set up Contact Lode Technical
correctly. Support.
Ergometer power is
off. Turn on ergometer power.
SQL Error
If a message is displayed indicating the SQL server is not running, use the following steps
to restart the SQL server.
1. From the Start menu, select All Programs | Microsoft SQL Server 2005 |
Configuration Tools | Sql Server Configuration Manager.
2. In Configuration Manager, select Sql Server 2005 Services.
• If the service is not started:
a. Right click Sql Server’CSCSTRESSDB’.
b. Select Start.
• If the service is running, contact Cardiac Science Technical Support.
Service Tests
After installing or upgrading the software, run the following tests to ensure the hardware
components are working properly.
Use these tests to check the system operation periodically or any time the system operation
is in question.
Service tests include:
◆ Self test
◆ Performance test
◆ Leads off test
Self Test
The self test checks the internal status of the preamp. The status and pass/fail results will
be displayed.
1. Select Service | System Devices from the Tools drop-down menu. Click the Preamp
tab. The following dialog box is displayed.
2. Click Start Self Test. The program runs the self-test and the following dialog box is
displayed with the results. Look at the Status box to determine whether the system has
passed.
3. Review Table 12-1 on page 12-16 to see if you can run the Q-Stress program.
Performance Test
The performance test checks the preamp’s gain, noise, and impedance levels for each
channel. This test requires that each ECG input be connected to the impedance service
appliance. The output voltage, noise, impedance, and pass/fail results for each channel will
be displayed.
1. Click the Start Performance Test button from the Service dialog box. The following
dialog box is displayed.
2. Make sure that each electrode lead is connected to the impedance service appliance.
3. Click Next. The Gain and Impedance results appear
4. Review Table 12-1 on page 12-16 to see if you can run the Q-Stress program.
5. Click Next. The program will perform the Noise test. The results are then displayed
6. Review Table 12-1 on page 12-16 to see if you can run the Q-Stress program.
7. Click Close to end this test.
1. Click the Start Leads-off Test button from the Service dialog box. The following
dialog box is displayed.
7. Review the Table 12-1 on page 12-16 to see if you can run the Q-Stress program.
8. Click Back to return to the test or Close to end the test.
Service Report
To view a Service Report for your current tests, select View Report. The Service Report is
displayed. Print and keep the most recent report for reference and comparison.
To print the report, select the Print button. After printing the report, fax it to Cardiac
Science Corporation (425-402-2010), if requested. This should be done after every
software upgrade.
Chapter contents
◆ Once per Shift 13-2
◆ Annual 13-4
◆ Component Replacement 13-5
! Dangerous voltages are present in the power supplies and around the power connections
when the Q-Stress system is plugged in. Disconnect the power cord before cleaning or
maintenance.
! Do not use ether, bleach, acetone, benzene, or similar solvents to clean any Q-Stress system
component, cable, or sensor. Only use the following cleaning agents: 3M™ 23H, PDI® Nice
Pak® Sani-System, or Virex II™.
! Do not immerse any Q-Stress system component, cable, or sensor in any type of fluid. If any
component is immersed in, or comes in contact with, large quantities of fluid, immediately
discontinue use and contact a qualified service technician.
! Interior components of the Q-Stress system may retain hazardous voltages even after the
system is shut off and the power cord disconnected.
There are no internal user serviceable parts. Do not remove any cover, disassemble any
system component, or touch any internal component. If a system component appears
damaged, immediately discontinue use and contact a qualified service technician.
! Using any damaged system component or using worn or damaged cables or connectors may
cause incorrect or unreliable readings.
If the a system component appears damaged, immediately discontinue use and contact a
qualified service technician.
Immediately replace worn or damaged cables or sensors.
◆ Components: Ensure all component housing is clean and undamaged. Check for
dents, bulges, or cracks.
Ensure all system components are in a stable upright position.
◆ Ventilation: Ensure all system components have minimum clearances as listed in the
specifications chapter. Also, ensure all ventilation holes are unobstructed.
◆ Cords: Ensure all power cords and other cables are not worn or damaged. Specifically,
check for loose, cracked, or bent connectors at the plug ends and cuts, nicks, or
fraying of the cords.
Ensure all cords are routed properly. Specifically check for the following:
• Ensure cords will not be stepped on or tripped over
• Ensure cords will not get caught in any moving part (including the treadmill)
• Ensure objects are not resting on cords
◆ Wall Outlets: Check the wall outlet for cracks or other damage.
◆ Environment: Check the area around the system to ensure the following:
• The system must not be used in the presence of flammable gasses
Annual
A complete safety and component check must be performed annually by a qualified service
technician.
Component Replacement
Normally, if a a board or other part of component is damaged or fails, the entire
component is replaced. At the descretion of Cardiac Science Corporation, a computer
backplane board may be replaced by a qualified service technician.
WARNING. Electrical Shock, Equipment Damage, Warranty Void.
! The following procedure must only be performed by a qualified service technician under
direction from Cardiac Science Corporation. Unauthorized servicing may cause equipment
damage or void the warranty.
! Ensure the computer is unplugged before opening the case. If power must be applied while
the case is open, ensure all personnel and equipment are clear of any energized
components.
! Electrostatic discharge can damage computer components. Always use an anti-static mat
and wrist grounding strap when working on internal components.
Q-Stress 4.0 system specifications may change at any time. Contact Cardiac Science
Corporation Technical Support for the latest system specifications.
Overall
Software
Hardware
RAM 1 GB minimum
ECG Amplifier
Speed 25 mm/sec
Feed Automatic
Speed up to 12 ppm
Feed Automatic
DVD-RW
Isolation Transformer
Keyboard
Monitor Display
Memory Span 8 seconds of ECG (with two average beats also displayed)
Reports
ECG Computations
ASVV (Absolute Spatial Vector Velocity), user can select any three
QRS Detection
leads for ASVV
External Interfaces
Blood Pressure Monitors Colin BP412, Colin STBP-780 (Japan only), SunTech Tango+
Timers
Patient Cable
Protocols
Procedures
Environmental Conditions
Cart
Ventilation Clearances
Allow at least 6 inches behind each workstation for ventilation. There are no side clearance
requirements except for the printer, which requires about 3 inches minimum on each side.
Fuse Replacement
Blown fuses are to be replaced by a Cardiac Science Corporation field service
representative or qualified technician only.
BTU Output
The estimated heat output from each system can be computed using the following
formula: Maximum amperage x 120 V x 3.41 = BTU/hr.
! The UPS must be connected between the power outlet and the isolation transformer. The
PC, monitor, preamp, and printer must be plugged into the isolation transformer
Function Specification
Maximum Load 650 VA / 410 W
Function Specification
Maximum Load 650 VA / 410 W
Function Specification
Maximum Load 1400 VA / 950 W
Function Specification
Maximum Load 1400 VA / 950 W
! Position the Q-Stress system away from other electrical or electronic equipment, if possible.
The presence of strong EMI fields, or generated by RF noise on the line power, or by
electronic, surgical, or diathermy instruments in close proximity to the Q-Stress system may
cause trace noise or input overload conditions.
If used with, or around, other electrical or electronic equipment, always carefully monitor
initial readings to verify normal operation.
The Q-Stress system is compliant with IEC 60601-1-2 EMC immunity requirements. Refer to
“EMC Declaration Tables” below.
Electromagnetic Emissions
The following table describes the Q-Stress electronic emissions.
RF emissions
Class A
CISPR 11
The Q-Stress System is suitable for use in all
Harmonic emissions establishments other than domestic and those
Class A
IEC 61000-3-2 directly connected to the public low-voltage
power supply network that supplies buildings
Voltage fluctuations/ used for domestic purposes.
flicker emissions Complies
IEC 61000-3-3
100 12 12 23
For transmitters rated at a maximum output power not listed above, the recommended
separation distance d in meters (m) can be estimated using the equation applicable to the
frequency of the transmitter, where P is the maximum output power rating of the transmitter in
watts (W) according to the transmitter manufacturer.
Note: At 80 MHz and 800 MHz, the higher frequency range applies.
Note: These guidelines may not apply in all situations. Electromagnetic propagation is affected
by absorption and reflection from structures, objects and people.
Electronic Immunity
The Q-Stress System is intended for use in the electromagnetic environment specified
below.
<5% UT <5% UT
(>95% dip in UT) for (>95% dip in Mains power quality should
0.5 cycle UT) for 0.5 cycle be that of a typical
Voltage dips, short <40% UT <40% UT commercial or hospital
interruptions and (>60% dip in UT) for (>60% dip in UT) for environment. If the user of
voltage variations on 5 cycle the Q-Stress System requires
5 cycle
power supply input <70% U continued operation during
T <70% UT power mains interruptions, it
lines
(>30% dip in UT) for (>30% dip in UT) is recommended that the Q-
IEC 61000-4-11 25 cycle for25 cycle Stress System be powered
<5% UT <5% UT from an uninterruptible
power supply or a battery.
(>95% dip in UT) for (>95% dip in UT) for
5 sec 5 sec
Note: UT is the a.c. mains voltage prior to application of the test level.
d = 1.2 P
d = 1.2 P
d = 2.3 P
Note: At 80 MHz and 800 MHz, the higher frequency range applies.
Note: These guidelines may not apply in all situations. Electromagnetic propagation is affected
by absorption and reflection from structures, objects and people.
a Field strengths from fixed transmitters, such as base stations for radio (cellular/cordless)
telephones and land mobile radios, amateur radio, AM and FM radio broadcast and TV
broadcast cannot be predicted theoretically with accuracy. To assess the electromagnetic
environment due to fixed RF transmitters, an electromagnetic site survey should be considered.
If the measured field strength in the location in which the Q-Stress System is used exceeds the
applicable RF compliance level above, the Q-Stress System should be observed to verify normal
operation. If abnormal performance is observed, additional measures may be necessary, such as
reorienting or relocating the Q-Stress System.
b
Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.
c
Amplitude modulated at 80% with a modulation frequency of 10 KHz per EN 60601-2-25.
Treadmill/Ergometer
See treadmill or ergometer documentation for specifications.
Ergometer Protocols
◆ Åstrand
◆ Manual
Pharmacological Protocols
◆ Persantine
◆ Manual
In addition to the standard protocols, you can custom-define your own protocol. See
Setting up Protocols on page 10-17.
Bruce Protocol
Naughton Protocol
Speed
Time Stage No (mph) Grade (%) METs
Rest/Recov 1.0 0.0 1.8
0:30 1 1.0 0.0 1.8
0:30 2 1.1 1.0 2.0
0:30 3 1.2 1.0 2.1
0:30 4 1.3 2.0 2.3
1:00 5 1.4 3.0 2.6
0:30 6 1.5 4.0 3.0
0:30 7 1.6 4.0 3.1
0:30 8 1.7 5.0 3.5
0:30 9 1.8 6.0 3.9
1:00 10 1.9 7.0 4.3
0:30 11 2.0 8.0 4.7
0:30 12 2.1 8.5 5.0
0:30 13 2.2 9.0 5.4
0:30 14 2.3 9.5 5.7
1:00 15 2.4 10.0 6.1
0:30 16 2.5 10.5 6.5
0:30 17 2.6 11.0 6.9
1:00 18 2.7 12.0 7.5
0:30 19 2.8 13.0 8.1
0:30 20 2.9 14.0 8.8
1:00 21 3.0 15.0 9.5
0:30 22 3.1 16.0 10.2
0:30 23 3.2 17.0 10.9
1:00 24 3.4 18.0 12.0
1:00 25 3.6 19.0 13.1
Speed
Time Stage No (mph) Grade (%) METs
Rest/Recov 1.0 0.0 1.8
0:30 1 1.5 3.0 2.8
0:30 2 1.6 4.0 3.1
0:30 3 1.7 5.0 3.5
0:30 4 1.7 6.0 3.7
1:00 5 1.8 7.0 4.1
0:30 6 1.9 8.0 4.5
0:30 7 2.0 8.5 4.9
0:30 8 2.1 9.0 5.2
0:30 9 2.2 9.5 5.5
1:00 10 2.3 10.0 5.9
0:30 11 2.4 11.0 6.4
0:30 12 2.5 11.5 6.8
0:30 13 2.6 12.0 7.3
0:30 14 2.7 12.5 7.7
1:00 15 2.8 13.0 8.1
0:40 16 3.0 13.5 8.8
0:40 17 3.2 14.0 9.6
0:40 18 3.4 14.5 10.3
0:40 19 3.6 15.0 11.1
0:40 20 3.8 15.5 11.9
0:40 21 4.0 16.0 12.5
0:40 22 4.2 17.0 13.3
0:40 23 4.5 18.0 14.1
0:40 24 4.8 19.0 14.9
0:40 25 5.2 20.0 16.1
Speed
Time Stage No (mph) Grade (%) METs
Rest/Recov 1.0 0.0 1.8
0:30 1 1.6 5.0 3.3
0:30 2 1.7 10.0 4.6
0:30 3 1.7 10.0 4.6
0:30 4 2.0 10.0 5.3
1:00 5 2.2 11.0 6.0
0:30 6 2.4 11.5 6.6
0:30 7 2.5 12.0 7.0
0:30 8 2.6 12.5 7.4
0:30 9 2.8 13.0 8.1
1:00 10 3.0 13.5 8.8
0:30 11 3.2 14.0 9.6
0:30 12 3.4 14.0 10.1
0:30 13 3.5 14.5 10.6
0:30 14 3.6 15.0 11.1
1:00 15 3.7 15.5 11.7
0:40 16 4.0 16.0 12.5
0:40 17 4.2 16.0 12.8
0:40 18 4.4 16.5 13.3
0:40 19 4.6 17.0 13.9
0:40 20 4.8 17.5 14.3
0:40 21 5.0 18.0 14.8
0:40 22 5.2 19.0 15.7
0:40 23 5.5 20.0 16.9
0:40 24 5.8 21.0 18.2
0:40 25 6.0 22.0 19.2
Overview
180 mmHg
K sound level
120 mmHg
Phase 5
Phase 1 diastolic
systolic
80 mmHg
BP = 120/80
◆ The systolic measurement is taken at the first onset of the first phase of the Korotkoff
sounds (K-sounds). This point can be 5 to 10 mmHg higher than manual
measurement.
◆ The diastolic measurement is taken at the transition from the fourth to the fifth phase
of the K-sounds (when the sounds stop). This reading can be 5 to 10 mmHg lower
than a manual measurement.
Treadmill motor noise and patient movement can decrease blood pressure measurement
sensitivity. Connect the BP412 trigger cable from the port on the BP412 labeled Trigger
TTL to the port on the Preamp II labeled QRS SYNC. If the QRS SYNC port is not
available, the trigger cable can be connected from the BP412 Trigger Analog to the
Preamp II CH1, CH2, or CH3.
Note: This is an alternate connection only if the QRS Sync output is being used to trigger
another device. The BP412 readings may not be consistent or accurate.
! Do not connect the trigger cable from Trigger TTL to CH1, CH 2, CH 3, or Trigger Analog to
QRS SYNC. This can damage the electronics in one or both systems.
1. Have the patient fully relax the weak arm and extend it palm up.
2. Proper placement of the microphone is critical. Position the cuff so that the
microphone cable/cuff tube harness extends down the patient’s arm towards the wrist.
Ensure that the two microphones are positioned over the brachial artery (located
below the bicep muscle on the inside of the upper arm). See Figure C-2. Do not use
the red tab to align the cuff on the patient’s arm. Only use the red tab to locate a
microphone and then align the microphone over the brachial artery
Note: If the microphones are not positioned over the brachial artery, the K-sound level
may be reduced and the monitor may become more susceptible to noise and result in
inaccurate readings.
1 inch minimum
Microphones
◆ The cable/cuff tube should be kept away from the belt deck. Footsteps can provide a
false beat that the sensitive BP412 microphones will detect.
these readings and uses this information when taking the more noisy exercise
measurements.
◆ Use the headphones to listen to the resting blood pressure measurements. This verifies
the accuracy of the unit under relatively quiet conditions and provides a reference
baseline for comparisons to stress measurements.
◆ If a suspect measurement is obtained, repeat the measurement and verify the readings
using the headphones.
◆ The STBP-780 does not communicate error states to the Q-Stress device. If there is an
error with the STPBP780, Q-Stress will simply time out and end the BP measurement
without indication as to the fault condition.
The STBP-780's display of Systolic, Diastolic, and HR resets when a stop command is
requested from Q-Stress for 8 to 10 seconds (dash marks ----- are displayed). You can not
start any BP requests until the display is regained. The Phase indicators do not reset. If the
stop is requested on the STBP-780 itself, it does not reset the values.
Patient Instructions
◆ To reduce noise artifacts, the patient should walk or run using a long stride.
◆ The patient should not rub the cuffed arm against the torso.
◆ Advise the patient before the test begins to relax fully the cuffed arm and let it drop to
the patient’s side when he/she feels the cuff inflating. If the patient is unable to hold
on to the handrail with only one hand, the cuffed arm should only touch or lightly
hold the padded portion of the handrail. This minimizes the amount of treadmill
vibration transmitted through the patient’s arm to the microphones.
◆ To further isolate noise, it is often helpful to tie or tape a towel or similar rope-like
object around the treadmill handrail. Having the patient hang onto this tether with
the arm being used for the BP helps to isolate the patient from the noise generated by
the treadmill.
◆ The automatic blood pressure monitor will perform reliably and accurately if you take
the time and effort to minimize any adverse conditions under which it must operate.
Requirements
You will need the ECG trigger and RS-232 cables specified below. Both are included in
your Tango+ packaging.
◆ ECG trigger cable: Used to take a BP measurement.
◆ RS-232 cable: Establishes communication between the Tango+ and your Q-Stress
system. This cable allows your Q-Stress system to prompt the Tango+ when it needs a
BP measurement. In addition, it allows the BP measurements taken by the Tango+ to
be transferred to your Q-stress system display and reports.
! Do not plug the Tango+ into the Q-Stress isolation transformer. The Tango+ provides its own
isolation.
2. Turn on the Tango+ using the switch at the rear top left corner of the Tango+.
Note: The Trackmaster TMX425 treadmill cannot be calibrated from the Stress application.
! Ensure that the treadmill tread is empty and the area around the treadmill is clear during
calibration.
Term Definition
A recording of sequential or simultaneous segments of the
12-lead Report conventional lead sets, following a 1 mV standardization pulse. See
“Sequential 12-Lead” and “Simultaneous 12-Lead.”
Term Definition
One complete cycle of an ECG waveform (see next figure). The
baseline provides the reference for measuring amplitude in either
millivolts of actual body signal or millimeters on the chart paper.
ECG Complex
Electrode Sites The locations on the patient's skin where electrodes are attached.
The period during an exercise stress test during which the patient is
performing a controlled exercise routine, such as walking and
Exercise Phase
running on a treadmill at defined speeds and grades. ECG and
other data are collected during the Exercise phase.
The duration of the exercise portion of the stress test. It is the count
Exercise Time in minutes and seconds that accumulates between starting
exercise and starting recovery on Q-Stress.
A reference point within the ECG complex from which offsets to the
Fiducial Point various ST measurement points are measured. The Q-Stress uses
the J-Junction as the fiducial point.
Baseline Reference
Isoelectric Point
.
ST Slope and Isoelectric Point
Term Definition
Each time a BP is entered (either manually or automatically), the
systolic value is multiplied by the current HR. The system compares
this new product with the current Max HRxBP and if the new value
is greater, it writes the new value over the old one. The same
Max HR x BP
scenario is also true for a new HR. It is multiplied by the current BP
and compared to the current Max HRxBP. If it is greater, it is written
over the old Max HRxBP. At the end of the study, the last entered
value is the Max HRxBP for that test.
An indication that the Q-Stress has detected that the patient has
Notification
exceeded a specified parameter.
The data from the end of the Exercise phase. These are not
Peak Exercise Data
necessarily the highest values.
The period after the Exercise phase of a stress test. ECG data can be
Recovery Phase
collected during this time.
The time before the patient begins exercise, during which the
Rest Phase operator can collect resting ECG data. Also called Pre-test Phase or
Rest Stage.
A 12-lead report that prints the data from three or six leads
simultaneously for a specified time period (either 2.5 seconds or 5.0
Simultaneous 12-Lead seconds), then prints data from the next three (or six) leads during
the same time period. The process is repeated until all twelve leads
are printed.
The point on the ECG complex at which the ST level (or ST slope) is
ST Sample Point measured. The ST level (or ST slope) sample point is at an offset
past the J-Junction programmable from 0-200 msec.
ST Slope
End Point-
Start Point
ST Slope Duration
(10-200 msec)
ST Slope
Abbreviations
Cardiac Science, the Shielded Heart logo, Quinton, Burdick, Q-Stress, and HeartStride are trademarks
of Cardiac Science Corporation. Copyright © 2008 Cardiac Science Corporation. All Rights Reserved.
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