الگوی تغییرات ده ساله سن ابتلا به انفارکتوس حاد میوکارد در بستری شدگان بیمارستان شهید بهشتی بابل (80-1371)

Background and Aim: Acute myocardial infarction (AMI) is one of the most common diseases with a high mortality rate, disability, and complications, in developing countries, because in the recent decade, coronary diseases have been the major cause of death in Iran. Thus, this study aimed at investigating a 10-year period of age variation in patients with acute myocardial infarction. Materials and Methods: This cross-sectional study was conducted based on the existing data in the medical charts of 1233 consecutive patients with MI who had been admitted to Babol Shahid Beheshti hospital between 1992 and 2001. Age, sex, history of MI, and year of the patients admission were extracted from hospital charts. For statistical analysis, we used SPSS software to analyze data applying t-test, Chi-square test, analysis of variance and F-test to assess the linear trend of change in the mean age of the patients and P≤0.05 was considered as significant. Results: Of 1233 cases 62% were males and 38% were females; about 15.7% of the cases were aged less than 50 years, 40.6% of them 65 years or over. In general, the overall mean age of patients was 60.1±1.2 years and the mean age of MI occurrence in females was significantly higher than males (61.5 vs 60.1 years, P=0.03). The linear trend of change in the mean age was not significant over 10 years (P=0.63). The mean age of patients with initial diagnosis of MI was 59.6±11.4 years, the linear trend of which was not significant over 10 years either (P=0.55). Conclusion: In order to increase the age occurrence of MI, a more educational program to increase the knowledge of cardiovascular risk factors, to control nutritional habits, to screen hypertension and a more serious coping with urban life styles are necessary.