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Summary of a consensus concerning death and ischemic events after coronary artery bypass grafting
J W Kirklin1, C D Naftel, E H Blackstone
1Department of Surgery, University of Alabama, Birmingham Medical Center.
Insights
Myocardial revascularization offers significant long-term benefits, with over 90% survival at 5 years. Key risk factors for early and late outcomes include patient age and coronary artery disease severity.
Area of Science:
- Cardiovascular Surgery
- Clinical Outcomes Research
Background:
- Review of early and long-term results of myocardial revascularization across multiple institutions.
- Analysis of patient outcomes from community hospitals and academic medical centers.
Framework:
- Retrospective analysis of myocardial revascularization outcomes.
- Identification of risk factors influencing perioperative and long-term survival.
Implementation:
- Data collected from four community hospitals, Katholieke Universiteit, and University of Alabama at Birmingham.
- Assessment of patient-free survival from ischemic events at 5 and 10 years post-operation.
- Evaluation of survival rates at 5 and 10 years.
Implications:
- Approximately 77% of patients remain free from ischemic events at 5 years, and nearly 50% at 10 years.
- Over 90% of patients survive 5 years, with approximately 80% surviving 10 years.
- Identified risk factors for early death and reduced long-term survival provide insights for surgical decision-making and patient management.
Abstract:
The early and long-term results of myocardial revascularization are reviewed for four unidentified community hospitals, for Katholieke Universiteit (Leuven, Belgium), and for the University of Alabama at Birmingham at two different times. After operation, approximately 77% of patients are free from all ischemic events at 5 years and nearly 50% are free at 10 years. Over 90% of patients survive 5 years, and approximately 80% survive 10 years. Some of the incremental risk factors for early death after operation include older age; degree of left ventricular dysfunction; hemodynamic instability at the time of operation; recent myocardial infarction; number of diseased coronary vessels; associated mitral incompetence, ventricular aneurysm, or ventricular tachycardia; longer aortic cross-clamp time; and non-use of the internal mammary artery for revascularization. The number of diseased coronary arteries and the aggressiveness of the atherosclerotic process, degree of left ventricular dysfunction, older age, and non-use of the internal mammary artery are risk factors for reduced long-term survival.