Long-term prognosis after myocardial infarction in men with diabetes

Area of Science:

• Cardiology
• Endocrinology
• Public Health

Background:

• Myocardial infarction (MI) is a leading cause of mortality in men.
• The impact of diabetes mellitus on long-term outcomes for male MI survivors requires further investigation.
• Understanding secondary risk factors is crucial for improving post-MI management.

Purpose of the Study:

• To compare the outcomes of male survivors of a first myocardial infarction (MI) with and without diabetes.
• To determine if diabetes is an independent risk factor for mortality and reinfarction after MI.
• To analyze the influence of diabetes on cumulative survival and reinfarction rates.

Main Methods:

• A cohort study of 1306 men who survived a first MI.
• Mean follow-up of 6.5 years with complete survival status data.
• Comparison of survival rates and reinfarction cumulative rates between diabetic and non-diabetic patients using multivariate regression analysis.

Main Results:

• The prevalence of diabetes at the time of MI was 5.6%.
• Diabetic subjects had significantly lower cumulative survival rates (5-year: 58% vs. 82%) and higher reinfarction rates (5-year: 46% vs. 27%) compared to non-diabetic subjects (P < 0.001 and P = 0.004, respectively).
• Diabetes was identified as an independent secondary risk factor for both mortality and reinfarction, even after adjusting for age and other secondary risks.

Conclusions:

• Diabetes is a significant independent secondary risk factor in male survivors of a first myocardial infarction.
• Diabetic male MI survivors experience substantially worse long-term outcomes, including increased mortality and reinfarction rates.
• These findings underscore the importance of aggressive diabetes management in cardiovascular disease prevention and post-MI care.