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Coronary heart disease and bypass surgery in urban blacks
Insights
Myocardial revascularization offers good outcomes for urban Black patients with severe coronary artery disease. Early intervention is crucial, as unstable angina increases operative risks and impacts results.
Area of Science:
- Cardiology
- Cardiac Surgery
- Public Health
Background:
- Advanced coronary artery disease (CAD) is prevalent in urban Black populations.
- Symptomatic patients often present with severe angina, including unstable forms.
- Understanding outcomes of myocardial revascularization in this demographic is critical.
Purpose of the Study:
- To evaluate the efficacy and safety of myocardial revascularization in urban Black patients.
- To assess the impact of disease severity, particularly unstable angina, on outcomes.
- To determine the long-term results of surgical intervention for CAD in this specific population.
Main Methods:
- Retrospective review of 56 urban Black patients undergoing myocardial revascularization.
- Analysis of patient demographics, presenting angina class, and coronary anatomy via cardiac catheterization.
- Assessment of operative mortality and follow-up clinical outcomes, including angina status.
Main Results:
- 75% of patients had severe triple-vessel disease; 50% presented with class III or unstable angina.
- Operative mortality was 3.4% for stable angina and 15% for unstable angina.
- At follow-up, 73% were angina-free, 16% improved, and 11% had persistent angina.
Conclusions:
- Myocardial revascularization is feasible with acceptable risks and good results in symptomatic urban Black patients with advanced CAD.
- Patients progressing to unstable angina face higher operative risks.
- Timely surgical intervention at an earlier disease stage is recommended for optimal outcomes.
Abstract:
Myocardial revascularization was reviewed in 56 urban black patients (41 men, 15 women). The age range was 33 to 70 with a mean of 53. Fifty percent presented with class III angina and 50 percent had progressed to severe unstable angina. Cardiac catheterization revealed severe triple-vessel disease in 75 percent of the patients while 15 percent had double-vessel disease and only 9 percent had single-vessel disease.At surgery the average number of bypass grafts performed was 2.3. The operative mortality was 3.4 percent for the group with stable angina and 15 percent for the unstable group.At follow-up, 73 percent of the patients had no angina. Sixteen percent were improved and 11 percent continued to have angina. In spite of the presence of advanced coronary artery disease, myocardial revascularization can be accomplished with acceptable operative risks and good results in symptomatic urban blacks. The risk, however, is higher in patients who have already progressed to unstable angina. It is therefore imperative that operative intervention be carried out at an earlier stage of the disease if satisfactory results are to be realized in this group.