Cardiac injury is difficult to assess, both clinically and by echocardiography, because it is not always an acutecondition in intensive care unit.Cardiac troponin-I (cTnI), highly sensitive and specific marker for acute myocardial injury. Cardiac troponin-I hasbeen shown to correlate with outcome in selected group of patients. We wanted to determine if cTnI level measuredupon admission is an independent predictor of mortality in selected group of clinically ill patients.