Clinical characteristics and in-hospital outcome of elderly patients with acute myocardial infarction

Objective To investigate clinical characteristics and in-hospital adverse events and mortality of elderly patients with acute myocardial infarction.Methods Totally,974 patients with acute ST elevated myocardial infarction were divided into two groups:elderly group(≥75 years,n=161) and control group(75 years,n=813).The patients' data,including clinical characteristics (gender,age,smoking,laboratory examinations,and comorbidities),treatment protocols,in-hospital complications and mortality were compared between the two groups.Results Compared with control group,there were more female patients and more patients with atypical symptoms in elderly group.They had poorer heart and lung function and more comorbidities.Hyperlipidemia and smoking were more frequently observed in control group.There were less patients in elderly group who underwent reperfusion therapy andβblocker administration.Patients in elderly group experienced more adverse events,including arrhythmia,cardiogenic shock and heart failure.Patients in elderly group had significantly higher in-hospital mortality(18.4%) than control group(P0.001). Conclusion Elderly myocardial infarction patients have poor general conditaion,more comorbidity,less reperfusion therapy,and higher adverse events incidences and mortalities.