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    Worksheet To Accompany FHR Review Video: Emerald Spangler May 6, 2021

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    Emerald Spangler
    This document provides an overview of fetal heart rate monitoring during labor. It defines key terms like FHR, variability, decelerations, bradycardia, and tachycardia. It explains that FHR monitoring is used to assess fetal viability and health during labor by observing the fetal heart rate pattern for concerning signs like a loss of variability, late decelerations, or bradycardia, which can indicate issues like hypoxemia or acidosis. The document also outlines normal ranges for FHR and variability and describes different types of decelerations and their clinical significance.

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    Worksheet To Accompany FHR Review Video: Emerald Spangler May 6, 2021

    Uploaded by

    Emerald Spangler
    68 views3 pages
    This document provides an overview of fetal heart rate monitoring during labor. It defines key terms like FHR, variability, decelerations, bradycardia, and tachycardia. It explains that FHR monitoring is used to assess fetal viability and health during labor by observing the fetal heart rate pattern for concerning signs like a loss of variability, late decelerations, or bradycardia, which can indicate issues like hypoxemia or acidosis. The document also outlines normal ranges for FHR and variability and describes different types of decelerations and their clinical significance.

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    FHR Worksheet

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    This document provides an overview of fetal heart rate monitoring during labor. It defines key terms like FHR, variability, decelerations, bradycardia, and tachycardia. It explains that FHR monitoring is used to assess fetal viability and health during labor by observing the fetal heart rate pattern for concerning signs like a loss of variability, late decelerations, or bradycardia, which can indicate issues like hypoxemia or acidosis. The document also outlines normal ranges for FHR and variability and describes different types of decelerations and their clinical significance.

    Copyright:

    © All Rights Reserved
    Download as DOCX, PDF, TXT or read online from Scribd
    Download as docx, pdf, or txt
    68 views3 pages

    Worksheet To Accompany FHR Review Video: Emerald Spangler May 6, 2021

    Uploaded by

    Emerald Spangler
    This document provides an overview of fetal heart rate monitoring during labor. It defines key terms like FHR, variability, decelerations, bradycardia, and tachycardia. It explains that FHR monitoring is used to assess fetal viability and health during labor by observing the fetal heart rate pattern for concerning signs like a loss of variability, late decelerations, or bradycardia, which can indicate issues like hypoxemia or acidosis. The document also outlines normal ranges for FHR and variability and describes different types of decelerations and their clinical significance.

    Copyright:

    © All Rights Reserved
    Download as DOCX, PDF, TXT or read online from Scribd
    Download as docx, pdf, or txt
    of 3

    Emerald Spangler May 6th, 2021

    Worksheet to accompany FHR review video

    FHR= Fetal Heart Rate Monitoring

    FHR is the most common means of assessing the health


    (viability) of the fetus throughout labor.

    Maternal uterine artery branches through the uterine wall into the placenta.

    All fetal organs and tissues receive oxygen rich blood from the

    uterine artery through the placental and umbilical cord to all

    fetal organs and tissues.

    The brain regulates fetal cardiac activity.

    Hypoxemia is lower than normal levels of oxygen. Significant or prolonged


    hypoxemia will result in FHR changes, decreased heart rate (bradycardia) and loss
    of FHR variability.

    Hypovolemia= Loss of blood volume resulting in hypoxemia.

    Acidemia= Acid/base imbalance resulting most commonly from hypoxemia.

    Uterine contractions appear as wave like forms on the FHR monitoring tracing.

    Normal fetal heart rate is 110-170 beats/minute (bpm).

    VARIABLILITY

    Variability is a 6-25 beats/minute which indicates a healthy nervous system and


    appears like “squiggly” line showing random variations in the FHR.

    Loss of variability is an omnious sign.

    Internal scalp electrode may cause a scalp hematoma.


    Emerald Spangler May 6th, 2021

    DECELERATIONS

    Early decelerations-FHR nadir corresponds with the peak of the uterine


    contraction.

    Early decelerations represent compression of the fetal head. The presence of


    early decelerations are considered a reassuring fetal heart rate pattern.

    Late decelerations-symmetrical decelerations which begin at or after the peak of


    a contraction.

    Late decelerations are associated with utero placental insufficiency, or a decrease


    in uterine blood flow.
    Due to:
    - Maternal hypotension
    - Uterine hyperstimulation
    - Acidosis and hypovolemia related to maternal DM

    Persistent late decelerations are considered non reassuring.


    ***loss of variability with persistent late decelerations is considered an ominous
    sign.

    VARIABLES

    - Most common deceleration seen in labor due to compression of the


    umbilical cord during labor
    - V or U shaped pattern
    - Mild, moderate, severe
    - Onset may vary relative to uterus contractions.
    Persistent variable decelerations are non-reassuring and may result in fetal
    acidosis and distress.

    FETAL BRADYCARDIA
    Emerald Spangler May 6th, 2021

    - Decrease in HR baseline <110 bpm


    - Causes:
    o Umbilical cord compression
    o Prolapsed umbilical cord
    o Tetanic uterine contractions
    o Anesthesia, epidural
    o Maternal seizures
    o Rapid fetal decent

    ACCELERATION

    - Increase in HR for > 30 seconds and > 15 bpm above baseline.


    - BENIGN AND REASSURING

    Reactive Non-stress test- 2 episodes of accelerations occur over 20 minutes.


    - Moderate variability
    - No decelerations

    TACHYCARDIA

    - Baseline > 160 bpm


    - Non-reassuring
    - Many causes: (list)
    o Maternal Fever
    o Early Fetal Hypoxemia
    o Medication
    o Heart Failure
    o Fetal Anemia

    AS/SC 01/2019

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