Elsevier

Annals of Emergency Medicine

Volume 57, Issue 2, February 2011, Pages 89-99.e2
Annals of Emergency Medicine

Clinical practice of emergency medicine/original research
The Effect of Triage Diagnostic Standing Orders on Emergency Department Treatment Time

https://doi.org/10.1016/j.annemergmed.2010.05.016Get rights and content

Study objective

Triage standing orders are used in emergency departments (EDs) to initiate evaluation when there is no bed available. This study evaluates the effect of diagnostic triage standing orders on ED treatment time of adult patients who presented with a chief complaint for which triage standing orders had been developed.

Methods

We conducted a retrospective nested cohort study of patients treated in one academic ED between January 2007 and August 2009. In this ED, triage nurses can initiate full or partial triage standing orders for patients with chest pain, shortness of breath, abdominal pain, or genitourinary complaints. We matched patients who received triage standing orders to those who received room orders with respect to clinical and temporal factors, using a propensity score. We compared the median treatment time of patients with triage standing orders (partial or full) to those with room orders, using multivariate linear regression.

Results

Of the 15,188 eligible patients, 25% received full triage standing orders, 56% partial triage standing orders, and 19% room orders. The unadjusted median ED treatment time for patients who did not receive triage standing orders was 282 minutes versus 230 minutes for those who received a partial triage standing order or full triage standing orders (18% decrease). Controlling for other factors, triage standing orders were associated with a 16% reduction (95% confidence interval −18% to −13%) in the median treatment time, regardless of chief complaint.

Conclusion

Diagnostic testing at triage was associated with a substantial reduction in ED treatment time for 4 common chief complaints. This intervention warrants further evaluation in other EDs and with different clinical conditions and tests.

Introduction

Previous studies have addressed the importance of length of stay as a measure of quality and efficiency of care in the emergency department (ED).1, 2 According to nationally representative ED visit data, ED length of stay in the United States, defined as the time from patient registration to physical departure from the ED, has steadily increased from a median of 132 minutes in 2001 to a median of 154 minutes in 2005.3 Longer ED length of stay is associated with a host of negative sequelae, including adverse clinical outcomes, ambulance diversion, patient dissatisfaction with ED care, and greater stress on clinical staff.1, 4, 5, 6

A number of factors are associated with longer ED length of stay. Clearly, crowding and the factors that cause crowding, such as boarding and high hospital occupancy rates, increase the time patients spend in the ED.7, 8, 9 Higher resource utilization, specifically receipt of advanced imaging tests and a greater number of screening tests, is associated with a longer ED length of stay.3, 10, 11, 12 Slow turnaround times from ancillary services such as specialty consultations and laboratory and radiology services also lengthen the ED visit.12, 13, 14, 15 EDs across the country have adopted a number of structural and process changes such as expansion of ED capacity (including the creation of fast-track and observation unit venues), active inpatient bed management, adding a physician to triage, and bedside registration to improve operational efficiency and decrease ED length of stay.16, 17, 18, 19, 20, 21, 22

Triage standing orders are another process strategy that may decrease ED length of stay.23 Standing orders are medical orders developed for particular types of patient conditions or complaints that nursing staff use to carry out specific studies and procedures in advance of physician evaluation.23 Derived from consensus and common clinical practice guidelines, standing orders enable more immediate intervention, potentially improving patient care and outcomes.23, 24, 25, 26 In the ED, triage standing orders allow triage staff to initiate diagnostic, therapeutic, and management regimens before provider examination for patients who cannot be immediately placed in a treatment bed.

The purpose of this study was to evaluate the effect that triage standing orders have on the treatment time of ED patients. For specific conditions, triage nurses at our facility can initiate either a partial or full triage standing order set for patients who cannot be immediately placed in a treatment room. We hypothesized that the receipt of triage standing orders (partial or full set) would shorten the treatment time for patients who received them. We also hypothesized that patients who received a full triage standing order set would be treated more quickly than those who received a partial triage standing order set.

Section snippets

Study Design

We conducted a retrospective, nested cohort study of patients treated in one community teaching-affiliated ED during a 32-month period beginning in January 2007 and ending in August 2009. All adult patients who presented with conditions for which triage standing orders had been developed and who waited at least 15 minutes to be placed in a room after triage were eligible. We categorized all study subjects into one of 3 study groups: (1) did not receive any diagnostic testing at triage; (2)

Results

Of the 38,719 adult patients presenting with one of the 4 study conditions, 15,188 (39%) met eligibility criteria. Approximately 25% of the study patients received a full triage standing order set, 56% received a partial triage standing order set, and 19% received diagnostic orders in the room (Figure 1). Table 1 summarizes the percentage of patients who received diagnostic tests at triage according to chief complaint category. Regardless of chief complaint, most patients received partial or

Limitations

The results of this study should be interpreted within the context of the following limitations. First, patients were not randomized to their treatment assignment. The use of triage standing orders, full or partial, was at the discretion of the triage nurses. We used a propensity score to balance the study groups on characteristics we measured that were systematically different between the groups. However, we were not able to balance the groups on unmeasured cofounders. For example, there may

Discussion

Because crowding shows no signs of abatement, EDs must develop strategies that optimize ED throughput without compromising the quality of emergency care. With this goal in mind, we evaluated the effect of triage standing orders on ED treatment time. Triage nurses used triage standing orders more frequently during crowded periods at the study ED. After controlling for differences between the study groups, we found that partial or full triage standing orders were associated with a 16% reduction

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      These standing orders, however, have not utilised POC devices or have only been instituted when the EC is full. There has also been inconsistent uptake by staff with resultant inappropriate testing [13,14]. Significant time-saving has recently been shown with upfront, POC testing performed prior to the patient being assessed by the doctor in the EC [15].

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    Supervising editor: Donald M. Yealy, MD

    Author contributions: All authors were involved in the study concept and design, review of the analysis and findings, drafting of the article, and critical revision of the manuscript for important intellectual content. RR, EB, and MLM were responsible for acquiring the data and obtaining institutional review board approval. RD performed the data analysis under the supervision of LSZ and MLM, and all authors had input into the variables considered for the analysis and how it was conducted. RR drafted the article, and all authors contributed substantially to its revision. MLM takes responsibility for the paper as a whole.

    Funding and support: By Annals policy, all authors are required to disclose any and all commercial, financial, and other relationships in any way related to the subject of this article that might create any potential conflict of interest. See the Manuscript Submission Agreement in this issue for examples of specific conflicts covered by this statement. This project was supported in part by grant number K01HS017957 from the Agency for Healthcare Research and Quality. The content is solely the responsibility of the authors and does not necessarily represent the official views of the Agency for Healthcare Research and Quality.

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    Please see page 90 for the Editor's Capsule Summary of this article.

    Publication date: Available online June 11, 2010.

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