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Mitral annuloplasty--a long term clinical and haemodynamic study
Insights
Mitral annuloplasty offers significant long-term survival and freedom from reoperation for mitral regurgitation patients. This procedure also improves clinical outcomes and reduces pulmonary pressures, demonstrating its value in selected cases.
Area of Science:
- Cardiology
- Cardiac Surgery
Background:
- Mitral regurgitation is a significant cardiac condition requiring effective treatment.
- Mitral annuloplasty is a surgical technique used to address mitral valve dysfunction.
Purpose of the Study:
- To evaluate the long-term clinical and hemodynamic outcomes of mitral annuloplasty.
- To assess patient survival and freedom from reoperation after mitral annuloplasty.
Main Methods:
- A follow-up study of 113 hospital survivors who underwent mitral annuloplasty.
- Actuarial analysis for survival and reoperation rates.
- Postoperative hemodynamic investigations in a subset of patients.
Main Results:
- Actuarial survival rates of 82.4% at 10 years and 65.1% at 19 years.
- Freedom from reoperation predicted at 90.1% at 5 years, 77.2% at 10 years, and 53.8% at 15 years.
- Significant reductions in pulmonary artery and wedge pressures, with 92% of patients in NYHA class I/II postoperatively.
Conclusions:
- Mitral annuloplasty provides satisfactory long-term clinical and hemodynamic improvement.
- The procedure is a valuable consideration in the management of selected patients with mitral regurgitation.
Abstract:
One hundred and thirteen hospital survivors with mitral annuloplasty have been followed-up from 3--19 years. Actuarially 82.4 +/- 12.1% and 65.1 +/- 18.1% of all patients are expected to be alive at 10 and 19 years respectively. 90.1 +/- 5.9% of patients were predicted to be free from reoperation at 5 years postop, while at 10 and 15 years the figures are 77.2 +/- 13.9% and 53.8 +/- 23.9% respectively. Postoperative haemodynamic investigations, performed in 18 patients at a mean duration of 8.5 (range 4--11) years, showed significant reduction in both mean pulmonary artery and wedge pressures as compared to pre-operative values. 92% of patients were in grade I and II (NYHA) clinically at the latest evaluation as compared to 84% being in grade III and IV pre-operatively. Mitral annuloplasty provides statisfactory long term clinical and haemodynamic improvement in a selected group of patients and should always be considered in the management of mitral regurgitation.