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Figure 5 Correlation between noninvasive predictors of failed epicardial reperfusion and infarct artery patency, flow and mortality. The three noninvasive criteria for failed reperfusion are: ST resolution <50% at 90 min, 60 min/baseline ratio of serum myoglobin <4 and persistent chest pain at the time of coronary angiography. IRA = infarct-related artery; TIMI = Thrombolysis In Myocardial Infarction. Reproduced with permission from de Lemos JA, Morrow DA, Gibson CM, et al. Early noninvasive detection of failed epicardial reperfusion after fibrinolytic therapy. Am J Cardiol 2001;88:353–8.