• Am. J. Med. · Sep 2017

    Single High-Sensitivity Cardiac Troponin I to Rule Out Acute Myocardial Infarction.

    • Yader Sandoval, Stephen W Smith, Sara A Love, Anne Sexter, Karen Schulz, and Fred S Apple.
    • Division of Cardiology, Hennepin County Medical Center and Minneapolis Heart Institute, Abbott Northwestern Hospital, Minn.
    • Am. J. Med. 2017 Sep 1; 130 (9): 1076-1083.e1.

    BackgroundThis study examined the performance of single high-sensitivity cardiac troponin I (hs-cTnI) measurement strategies to rule out acute myocardial infarction.MethodsThis was a prospective, observational study of consecutive patients presenting to the emergency department (n = 1631) in whom cTnI measurements were obtained using an investigational hs-cTnI assay. The goals of the study were to determine 1) negative predictive value (NPV) and sensitivity for the diagnosis of acute myocardial infarction, type 1 myocardial infarction, and type 2 myocardial infarction; and 2) safety outcome of acute myocardial infarction or cardiac death at 30 days using hs-cTnI less than the limit of detection (LoD) (<1.9 ng/L) or the High-STEACS threshold (<5 ng/L) alone and in combination with normal electrocardiogram (ECG).ResultsAcute myocardial infarction occurred in 170 patients (10.4%), including 68 (4.2%) type 1 myocardial infarction and 102 (6.3%) type 2 myocardial infarction. For hs-cTnIConclusionStrategies using a single hs-cTnI alone or in combination with a normal ECG allow the immediate identification of patients unlikely to have acute myocardial infarction and who are at very low risk for adverse events at 30 days.Copyright © 2017 Elsevier Inc. All rights reserved.

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