Objective To research the sensitivity and specificity of troponin I (TnI) for the diagnosis of acute myocardial infarction (AMI). To investigate the time window for ruling out AMI with TnI and creatine kinase isoenzyme MB mass (CK-MBm). Methods According to the inclusion and exclusion criteria to choose the final study population among 161 unselected and consecutive patients with chest pain or equivalent symptoms in the Emergency Department. The blood samples for the measurement of TnI and CK-MB...