The Utility of Point-of-Care Testing at Emergency Department Triage by Nurses in Simulated Scenarios

The Effect of Point-of-Care Testing at Triage: An Observational Study in a Teaching Hospital in Saudi Arabia

Introduction

Prolonged waiting times during episodes of emergency department (ED) crowding are associated with poor outcomes. Point-of-care testing (POCT) at ED triage prior to physician evaluation may help identify critically ill patients. We studied the impact of ED POCT in a single ED with a high degree of crowding for patients with high-risk complaints who were triaged as non-critically ill.

Methods

We conducted the study from April-July 2017 at King Abdulaziz University (KAU) Hospital in Jeddah, Saudi Arabia. Patients with one of seven complaints received triage POCT. The primary outcome was whether POCT results at triage resulted in immediate transfer of the patient from the waiting room into the ED. Secondary outcomes were whether the triage nurse felt that the POCT results were useful, and whether triage POCT changed triage acuity. We used simple descriptive statistics to summarize the data.

Results

A total of 94 patients were enrolled and received i-STAT® POCT. The most common symptoms and triage protocols were for chest pain (42%), abdominal pain (31%), and shortness of breath (22%). In 11 cases (12%), care was changed as a result of triage POCT. In 12 cases (13%), triage level was changed. The triage nurse found POCT helpful in 93% of cases.

Conclusion

In this ED, triage POCT was a helpful adjunct at ED triage and resulted in immediate care (transfer to an ED room) in one in eight cases. Therefore, POCT at triage may be a useful adjunct to improve patient safety, particularly in crowded EDs.

Early Point-of-Care Testing at Triage Reduces Care Time in Stable Adult Emergency Department Patients

BACKGROUND

Core laboratory testing may increase length of stay and delay care.

OBJECTIVES

We compared length of emergency department (ED) care in patients receiving point-of-care testing (POCT) at triage vs. traditional core laboratory testing.

METHODS

We conducted a prospective, case-controlled trial of adult patients with prespecified conditions requiring laboratory testing and had POCT performed by a nurse after triage for: a basic metabolic panel, troponin I, lactate, INR (i-STAT System), urinalysis (Beckman Coulter Icon), or urine pregnancy test. Study patients were matched with controls based on clinical condition, gender, age, and time to be seen. Groups were compared with Wilcoxon rank-sum or Fisher's exact tests.

RESULTS

We matched 52 POCT study patients with 52 controls. Groups were similar in age, gender, clinical condition, time to be seen by a physician (3.3 h, 95% confidence interval [CI] 2.2-4.4, vs. 3.1 h, 95% CI 2.2-4.5 h, in POCT and control patients, respectively; p = 0.84), use of imaging, and disposition. Of 52 study patients, 3 (5.8%, 95% CI 2.0-15.9) were immediately transferred to the critical care area to be urgently seen by an emergency physician. POCT patients had a significantly shorter median (interquartile range [IQR]) ED care time than matched controls (7.6, 95% CI 5.1-9.5 vs. 8.5, 6.2-11.3 h, respectively; p = 0.015). Median [IQR] ED length of stay was similar in study patients and controls (9.6, 95% CI 7.9-14.5 vs. 12.5, 8.2-21.2 h, respectively; p = 0.15).

CONCLUSIONS

Among stable adult patients presenting to the ED with one of the prespecified conditions, early POCT at triage, compared with traditional core laboratory testing after evaluation by an ED provider, reduced ED care time by approximately 1 h.