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[Prevention of cardiac events by beta-blocking agents in elderly patients after myocardial infarction]
K Ishikawa1, K Kanamasa, J Hama
1Department of Medicine, Kinki University School of Medicine, Osaka, Japan.
Insights
Beta-blocking agents significantly reduced cardiac events in patients post-myocardial infarction. This finding applies to both elderly and younger individuals, highlighting their cardioprotective effects.
Area of Science:
- Cardiology
- Pharmacology
Context:
- Myocardial infarction (MI) is a leading cause of cardiac morbidity and mortality.
- Post-MI management strategies aim to prevent recurrent events and improve survival.
- Beta-blocking agents are a cornerstone therapy after MI.
Purpose:
- To evaluate the effectiveness of beta-blocking agents in preventing cardiac events in patients with a history of myocardial infarction.
- To assess the impact of beta-blockers across different age groups.
Summary:
- A retrospective analysis of 1169 patients post-MI (mean age 60.2 years) was conducted.
- Patients receiving beta-blocking agents (n=653) had a lower incidence of cardiac events (3.2%) compared to those not receiving them (n=516, 7.6%, p < 0.01).
- This protective effect was observed across all age strata, including patients 70 years and older.
Impact:
- Beta-blocking agents demonstrate significant cardioprotective effects in patients following myocardial infarction.
- The findings support the continued use of beta-blockers as a crucial therapeutic intervention for secondary prevention of cardiac events.
Abstract:
We retrospectively analyzed the effect of beta-blocking agents on the incidence of cardiac events in elderly patients who had had myocardial infarction. A total of 1169 patients who had had a myocardial infarction (age, 60.2 +/- 11.4 years) were followed for a mean of 18.0 +/- 19.7 months and the incidence of cardiac events (fatal or nonfatal myocardial infarction, sudden cardiac death, and death due to congestive heart failure) was computed. There were 21 cardiac events in 653 patients who received beta-blocking agents (3.2%) and 39 events in 516 patients who did not receive beta-blocking agents (7.6%, p < 0.01). Among patients less than 50 years old, the incidences of cardiac events were 4.1% in those who received beta-blocking agents and 7.6% in those who did not; among those 50 to 59 years old the incidences were 3.0% and 7.5%, respectively; among those 60 to 69 years old they were 4.3% and 6.0%, respectively; and among those 70 years old or older they were 0.8% and 11.4%, respectively (p < 0.01). We found that beta-blocking agents prevented cardiac events both in elderly and in younger patients after myocardial infarction.