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Early exclusion of major adverse cardiac events in emergency department chest pain patients: A prospective observational study

Leung, Yuk-ki, Cheng, Nga-man, Chan, Cangel Pui-yee, Lee, Anna, Wong, Jeffrey Ka-tak, Yan, Bryan Ping-yen, Ahuja, Anil Tejbhan, Graham, Colin Alexander and Rainer, Timothy Hudson 2017. Early exclusion of major adverse cardiac events in emergency department chest pain patients: A prospective observational study. Journal of Emergency Medicine 53 (3) , pp. 287-294. 10.1016/j.jemermed.2017.05.006

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Abstract

Background The current evaluation of patients with chest pain presenting to an emergency department (ED) with suspected acute coronary syndrome (ACS) is a lengthy process involving serial measurements of troponin. Objective We aimed to validate the diagnostic accuracy of a Thrombolysis in Myocardial Infarction (TIMI) score with single high-sensitive cardiac troponin T (hs-cTnT) for early rule out of 30-day major adverse cardiac events (MACE), and to compare the TIMI score with combinations of heart-type fatty acid binding protein (H-FABP) and a modified HEART (history, electrocardiogram, age, risk factors, troponin) score. Methods We recruited 602 consecutive adult patients with chest pain and suspected ACS in the ED. Each patient had TIMI and HEART scores, and a point-of-care H-FABP test. Results MACE occurred in 42 (7.0%) patients within 30 days. A low risk for 30-day MACE was identified by a modified TIMI score of 0 in 65 (11%) patients, and by a HEART score ≤ 2 in 96 (16%) patients. No MACE occurred in these groups, giving both scores a sensitivity of 100% (95% confidence interval [CI] 91.6–100%), and specificity of 11.6% (95% CI 9.2–14.5%) and 17.1% (95% CI 14.2–20.5%), respectively. Use of combined TIMI and HEART scores improved the specificity further to 22.0% (95% CI 18.7–25.6%) without lowering sensitivity. Early H-FABP measurement > 7 μg/L had a sensitivity of 41.5% (95% CI 27.8–56.6%) and a specificity of 91.1% (95% CI 88.4–93.2%) for predicting 30-day MACE. Conclusions A modified TIMI score of 0 or a HEART score of ≤ 2, incorporating a single hs-cTnT level, will identify patients with low risk of 30-day MACE for early discharge within 2 h of ED arrival.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Medicine
Publisher: Elsevier
ISSN: 0736-4679
Funders: Health and Medical Research Fund (HMRF) of Hong Kong
Date of First Compliant Deposit: 30 April 2018
Date of Acceptance: 7 May 2017
Last Modified: 07 Oct 2018 16:20
URI: http://orca-mwe.cf.ac.uk/id/eprint/111078

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