Troponin estimation identifies myocardial infarction patients with different characteristics.

Objective: To investigate the impact of new myocardial infarction definition based on troponin, the rate of myocardial infarction diagnosis, patients characteristics, and short-term prognosis.

Methods: We enrolled 1,255 consecutive myocardial infarction patients from the Kuwait Registry of Acute Coronary Syndromes from December 2003 to May 2004. Two patient groups were identified, those diagnosed with elevated creatine kinase-MB (CK group) and those diagnosed with elevated troponin with normal CK-MB (Troponin group).