Abstract Objective To analyze clinical and coronary angiographic features of ST- segment elevation myocardial infarction (STEMI) in patients of different ages. Methods The electric medical records of inpatients with STEMI from January 2007 to December 2013 in our hospital were reviewed. The risk factors,clincial characteristics, lab parameters, ECG, coronary angiography and prognosis were compared among young, middle- aged and elderly patients. Results 1354 inpatients with SETMI were enrolled. Of them, 68 cases were in young group, 413 cases in middle- aged group, and 873 cases in elderly group. Male, smoker, family history of coronary artery disease, Kil ip I, triglyceride and platelet count were significantly higher, while hypertension, ventricular tachycardia/fibril ation, new atrial fibrillation and Kil ip IV were lower in young group than elderly group (al P<0.05). Normal coronary angiography and single- vessel disease were seen more frequently, while posterior myocardial infarction and three- vessel disease were seen less frequently in young group than middle- aged and elderly groups. The prevalence of death, myocardial re- infarction and secondary PCI were lower in young group than middle- aged and elderly groups. Conclusion The risk factors,clincial characteristics, coronary angiography and prognosis of acute STEMI are different in young, middle- aged and elderly patients, which should be considered during management of STEMI.
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