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Late results after triple-valve replacement with various substitute valves
P S Brown1, C S Roberts, C L McIntosh
1Surgery Branch, National Heart, Lung and Blood Institute, National Institutes of Health, Bethesda, Maryland.
The Annals of Thoracic Surgery
|February 1, 1993
Summary
Triple-valve replacement outcomes show improved function post-surgery. Mechanical valves had lower reoperation rates than bioprosthetic valves, but no significant differences in death or thromboembolism were observed.
Area of Science:
- Cardiovascular Surgery
- Prosthetic Heart Valves
- Cardiac Rehabilitation
Background:
- Triple-valve replacement is a complex procedure with significant implications for long-term patient outcomes.
- Understanding the influence of different prosthetic valve combinations (mechanical vs. bioprosthetic) is crucial for optimizing patient care.
- Previous research has not fully elucidated the comparative late morbidity and mortality associated with various valve combinations in triple-valve replacement survivors.
Purpose of the Study:
- To evaluate the impact of mechanical and bioprosthetic valve combinations on late morbidity and mortality in triple-valve replacement survivors.
- To assess functional class, cardiac index, and pulmonary artery pressures post-triple-valve replacement.
- To compare reoperation rates, thromboembolism, hemorrhage, and overall valve-related events between mechanical and bioprosthetic valve groups.
Main Methods:
- Retrospective analysis of 40 hospital survivors of triple-valve replacement.
- Patients were categorized based on the combination of mechanical and bioprosthetic valves used in aortic, mitral, and tricuspid positions.
- Long-term follow-up (mean 8.3 years, 100% complete) assessed survival, reoperation, thromboembolism, hemorrhage, and valve-related morbidity.
Main Results:
- Significant improvements in functional class, cardiac index, and pulmonary artery pressures were observed 12 months post-operation.
- Actuarial survival was 78% at 5 years and 74% at 10 years.
- Patients with two or more mechanical valves showed a lower actuarial freedom from reoperation compared to those with two or more bioprosthetic valves (p < 0.05).
Conclusions:
- Triple-valve replacement significantly improves hemodynamic function and functional class in survivors.
- No significant differences in late death, thromboembolism, or anticoagulant-related hemorrhage were found between mechanical and bioprosthetic valve groups.
- Mechanical valves were associated with a higher rate of reoperation compared to bioprosthetic valves in triple-valve replacement patients.