Single-Point Cardiac Troponin T at Coronary Care Unit Discharge after Myocardial Infarction Correlates with Infarct Size and Ejection Fraction

creatine kinase MB (CK-MB) with cardiac troponins is the lack of evidence of the ability of troponins to estimate the size of acute myocardial infarction (AMI). We investigated the ability of a single measurement of cardiac troponin T (cTnT) at coronary care unit (CCU) discharge to estimate infarct size and assess left ventric-ular (LV) function in AMI patients. Methods: We studied 65 AMI patients in whom infarct size was estimated by CK-MB peak concentrations and gated single-photon emission computed tomography (SPECT) myocardial perfusion using technetium-99m sestamibi and LV function by SPECT imaging. Mea-surements of cTnT and SPECT were performed 72 h (median) after admission (range, 40–160 h). SPECT was also repeated 3 months later