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Absence of secular changes in the prognosis of patients with an initial myocardial infarction
Insights
Secular trends in myocardial infarction (MI) prognosis showed unchanged in-hospital case fatality for men but improved for women. Long-term survival after MI did not significantly differ between study periods, suggesting limited therapeutic advances.
Area of Science:
- Cardiology
- Public Health
- Epidemiology
Background:
- Myocardial infarction (MI) prognosis has evolved due to advancements in acute coronary care.
- Understanding secular trends in MI outcomes is crucial for assessing treatment efficacy and prevention strategies.
Purpose of the Study:
- To examine secular trends in in-hospital and long-term prognosis for patients hospitalized with an initial myocardial infarction.
- To compare outcomes between two distinct time periods (1966-1967 and 1971) to identify changes in patient prognosis.
Main Methods:
- A community-based study analyzed data from 935 male and female patients hospitalized with their first MI.
- In-hospital case fatality rates and long-term survival (up to 10 years post-discharge) were compared between the two study periods.
Main Results:
- In-hospital case fatality for males remained stable at 19.0% across both periods.
- A significant decrease in in-hospital case fatality was observed for women (37.2% in 1966-1967 vs. 26.6% in 1971).
- No significant differences in overall survival were found for either males or females between the two periods when followed long-term.
Conclusions:
- Findings suggest limited therapeutic advancements in acute coronary care between the study periods.
- The results underscore the importance of continued efforts in primary and secondary prevention of atherosclerosis.
- Improved outcomes for women warrant further investigation into potential contributing factors.
Abstract:
A community-based study was conducted in metropolitan Baltimore in which secular trends in the in-hospital and long-term prognosis of 935 male and female patients hospitalized with an initial myocardial infarction were examined for the two periods of 1966-1967 and 1971. The in-hospital case fatality rate among males in both periods remained unchanged (19.0% vs 19.0%), whereas there was a decrease over time among women hospitalized in 1966-1967 as compared to those in 1971 (37.2% vs 26.6%) (p less than 0.10). For patients discharged alive from the hospital and followed up for as long as 10 years, no significant differences in overall survival were observed between male patients discharged in 1966-1967 and 1971 or between female patients discharged in these two periods. These findings may reflect the lack of major therapeutic advances in the care of the acute coronary patient between the two study periods and, therefore, support continuing efforts directed at the primary and secondary prevention of the atherosclerotic process.