Prevalence and outcome of patients referred for chest pain with high-sensitivity troponin elevation and no diagnosis at discharge

INTRODUCTION: Specialized chest pain units appear to increase the proportion of patients with acute chest pain who are properly evaluated, but some of them remain doubtful. HYPOTHESIS: The aim of this study was to evaluate the survival and occurrence of cardiovascular events in patients without diagnosis at the end of management of chest pain with high‐sensitivity troponin (Tn) elevation. METHOD: All consecutive patients who came to the cardiac emergency room of Poitiers University Hospital between January 1, 2014, and August 7, 2015, for chest pain and Tn elevation were included. The primary endpoint was the number of undiagnosed patients; secondary endpoints included survival and major adverse cardiac events. RESULTS: A total of 1001 patients (695 male; mean age, 68 ±16 years) who had chest pain and Tn elevation were included. Median follow‐up was 24.5 (IQR, 14.7–29.5) months. Forty‐seven (4.7%) patients remained without diagnosis. Compared with patients with diagnosis, these patients were younger (53.6 ±19.7 years; P