The Effect of Emergency Department Crowding On Patient Outcomes: A Literature Review
The Effect of Emergency Department Crowding On Patient Outcomes: A Literature Review
The Effect of Emergency Department Crowding On Patient Outcomes: A Literature Review
Abstract
The purpose of this review was to summarize the findings of published reports that investigated quality-
related outcomes and emergency department (ED) crowding. Of 276 data-based articles, 23 reported
associations between patient outcomes and crowding. These articles were grouped into 3 categories:
delay in treatment, decreased satisfaction, and increased mortality. Although these studies suggest that
crowding results in poor outcomes, it is possible that other factors such as nursing care contribute to
these adverse outcomes. Nursing care has been shown to contribute to both positive and negative
patient outcomes in other settings. Building an understanding of how ED crowding affects the practice
of the emergency nurse is essential to examining how nursing care, surveillance, and communication
impact outcomes of emergency patients. Investigation into nurse-sensitive quality indicators in the ED
has potential to develop strategies that deliver high quality of care, regardless of crowded conditions.
PATIENT CROWDING in the emergency department (ED) has become a daily challenge to providing high-
quality care in EDs worldwide and is a critical problem affecting more than 114 million patients annually
in the United States alone(Institute of Medicine, 2006; Pitts, Niska, Xu, & Burt, 2008; Richardson, 2006).
According to the Crowding Resources Task Force of 2002, an ED is considered crowded when the
identified need for emergency services is greater than the available resources in the ED (Asplin et al., 2003).
American College of Emergency Physicians (2002) amended this definition to be quantifiable by defining ED
crowding as any time when “inadequate resources to meet patient care demands lead to a reduction in
the quality of care.” In 2006, the Institute of Medicine (IOM) released a series of reports stating that
emergency medical services in the United States are overwhelmed and underfunded. In response to the
Institute of Medicine reports, The Joint Commission has deemed that every hospital must have a plan to
address the growing problem of crowding in the ED (Fee, Weber, Maak, & Bacchetti, 2007). However, few
hospitals have been able to develop an effective strategy to combat the daily occurrence of ED crowding.
Many factors such as increased patient volume, nursing staff shortages, decreased inpatient beds,
increased acuity of patients entering the ED, and increased number of patients boarded in the ED have
been shown to consistently contribute to ED crowding (Magid, Asplin, & Wears, 2004; Weiss, Ernst, &Nick,
2006
).
In an attempt to understand the causes and implications of ED crowding, research on the topic continues.
The number of articles focusing on ED crowding increases dramatically every year although the topic of
ED crowding was first described more than 2 decades ago. Much of the research currently being
generated regarding ED crowding is at an organizational level. Urgent Matters, a division of the Robert
Wood Johnson Foundation, has become the leading organization in ED research and has focused on
finding best practices for hospitals to address ED crowding. Urgent Matters has also focused its resources
on improving patient flow. However, less attention has been paid on the effect that ED crowding has on
patient outcomes. During periods of crowding, emergency nurses report perceived decreases in the
quality of care provided to patients (Pines, Garson, et al., 2007).
Measures of quality care are outcomes that describe the impact on health resulting from care provided
by the health care system (Centers for Medicare & Medicaid Services, 2007). The purpose of this review
was to summarize the findings of published reports that investigated quality-related outcomes and
crowding.
METHODS
A search in PubMed for articles that included the terms “ED” or “emergency department” with
“crowding” was performed. As there is no consensus for a measurable definition of ED crowding, no
definitive threshold was used to determine whether a study truly measured a crowded ED. Editorial and
review articles not written in the English language were excluded. The remaining articles, were reviewed.
Only articles that used a quantitative research design were included. The articles that focused on causes
of ED crowding were excluded.
CONCLUSION
In my opinion, the effect of ED crowding on patient satisfaction levels, medication administration delays,
and mortality is well documented. Studies demonstrate that quality of care is being impacted during
crowding, resulting in delays in treatment and medication administration, reduced patient satisfaction,
and even death. Unfortunately, ED crowding is a complex problem with no foreseeable solution.
Therefore, ED practitioners and administrators need more information about how to provide quality care
despite ED crowding.
Researchers agree that several factors consistently contribute to ED crowding: (a) fewer hospitals
nationwide, (b) nursing staff shortages, (c) decreased inpatient beds, (d) increased patient volume, (e)
increased acuity of patients entering the ED, and (f) the increased number of patients boarded in the ED
(Bernstein, Verghese, Leung, Lunney, & Perez, 2003; Estey, Ness, Saunders, Alibhai, & Bear, 2003; Magid et
al., 2004; Raj, Baker, Brierley, & Murray, 2006). Because few of these factors are amenable to interventions
(e.g., it is unlikely that new hospitals will be built, inpatient beds added to hospitals, or that acuity will
suddenly decrease), it may be that effective strategies for the optimization of patient outcomes focus on
the processes that will contribute to maintaining high-quality care even during times of crowding. Nurses
have a unique and valuable perspective in identifying safe, effective care and are urged to examine
practices that support optimal patient outcomes in ED, regardless of crowding status.
Reference
https://journals.lww.com/aenjournal/Fulltext/2011/01000/The_Effect_of_Emergency_Department_Crow
ding_on.7.aspx?WT.mc_id=HPxADx20100319xMP
UNIVERSITY OF THE PHILIPPINES MANILA
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