Coronary angiography and clinical characteristics of acute myocardial infarction in young patients

Objective To evaluate infarction risk factors, clinical manifestations and the characteristics of coronary artery disease of the young with AMI. Methods Patients were selected from July 2007 to December 2008, and divided into young group with AMI (age≤45 years, n=76) and older group with AMI (age≥60 years, n=80). The main risk factors (smoking, hypertension, dyslipidemia, diabetes, positive family history of coronary heart disease, obesity and alcohol consumption history) were compared in two groups. Clinical characters and coronary leson levels were compared and analyzed. Results Among the young group, there were 54 (71.1%) patients with a history of smoking, 24 (31.6%) hypertriglyceridemia, 11(14.5%) family history of CHD, 20 (26.3%) obesity and 45 (59.2%) alcohol abuse, each of these was higher than that of older group. Most young patients with AMI were men (88.2%). Coronary angiogram showed that the young group mainly had single vessel disease. Proportion of 2 and 3 vessel disease in young group was obviously less than that of the old group (P0.01). Conclusion There are more risk factors in the young patients with AMI. Family history of CHD and obesity are the most of risk factor. Most of them have typical symptom, less complication and better progrosis. The disease is mainly single vessel one.