How accurate is the use of ECGs in the diagnosis of myocardial infarct?

摘要

Electrocardiograms have been a mainstay in the evaluation for MI for many years. A systematic review of the workup of acute chest pain found that the ECG was the most useful bedside test for ML1 In this review, ST segment elevation and Q waves were found to be equally reliable predictors of MI (positive likelihood ratio [LR+] = 22). A normal ECG was also found to be the most important bedside finding for ruling out the diagnosis of MI (LR- = 0.2).