• H Andersson, T E Christensen, K A Ahtarovski, L E Bang, P Hasbak, N Vejlstrup, F Pedersen, L Holmvang, P Grande, P Clemmensen, and G S Wagner.
• Department of Cardiology, The Heart Centre, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark; Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark. Electronic address: hedvig.andersson@regionh.dk.
• J Electrocardiol. 2014 Jul 1; 47 (4): 459-64.

Background And PurposeWe aimed to study the prevalence of acute cardiac disorders in patients with suspected ST-segment elevation myocardial infarction (STEMI) and non-significant coronary artery disease (CAD).MethodsFrom January to October 2012 we consecutively included patients admitted with suspected STEMI and non-significant CAD (coronary artery stenosis diameter <50%). Patients were diagnosed with acute cardiac disorder in the presence of elevated cardiac biomarkers (troponin T >50ng/l or creatine kinase MB >4μg/l) or dynamic ECG changes (ST-segment changes or T-wave inversion).ResultsOf the 871 patients admitted with suspected STEMI, 11% (n=95) had non-significant CAD. Of these, 67% (n=64) had elevated cardiac biomarkers or dynamic ECG changes and were accordingly diagnosed with acute cardiac disorders. In the remaining 33% (n=31) of patients, cardiac biomarkers were normal and ECG changes remained stationary.ConclusionsAcute cardiac disorders were diagnosed in two thirds of patients with suspected STEMI and non-significant CAD.Copyright © 2014 Elsevier Inc. All rights reserved.

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