Acute coronary syndrome in an intensive care unit of a tertiary care centre: the spectrum and coronary risk factors.

Introduction: Acute coronary syndrome is the major leading cause for coronary care unit admission. Its spectrum comprises a variety of disorders including unstable angina, non ST elevation and ST elevation myocardial infarction. Its spectrum and incidence is crucial as a part of need assessment of cardiac catheterization laboratories.

Methods: An observational study was designed to study the spectrum of acute coronary syndrome and associated coronary heart disease risk factors in subjects admitted in intensive care unit of College of Medical Sciences Teaching Hospital, Bharatpur, Nepal from August 2009 to September 2010. Details including coronary risk factors and the categories and outcomes of acute coronary syndrome were analyzed.

Results: A total of 57 subjects were included in the study. The majority 36 (63.16%) were males. The mean age was 64.54±13.8 years. Five (8.8%) patients were ≤45 years and 29 (50.88%) patients were ≥65 years. The major coronary heart disease risk factors were smoking 29 (50.88%), diabetes 25 (43.85%), hypertension 21 (36.87%), and previous history of coronary heart disease 18 (31.58%). ST elevation myocardial infarction was the major category 24 (42.11%) followed by non-ST elevation myocardial infarction and unstable angina 18 (31.58%) and 15 (26.32%), respectively. Myocardial infarction complicated with cardiogenic shock had very high mortality (83.33%).

Conclusions: The ST elevation myocardial infarction was the major clinical form of acute coronary syndrome admitted in intensive care unit. Prevention should be targeted on modifi able risk factors such as the management of hypertension, dyslipidemia, diabetes and obesity. In addition, the improvement in cardiology service with the establishment of CCU and cathlab might improve the mortality and morbidity in such cases.