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J Thorac Cardiovasc Surg 1996;112:727-730
© 1996 Mosby, Inc.

SURGERY FOR ACQUIRED HEART DISEASE

CLOSED MITRAL VALVOTOMY FOR MITRAL RESTENOSIS: EXPERIENCE IN 113 CONSECUTIVE CASES

From the Department of Cardiovascular & Thoracic Surgery, Postgraduate Institute of Medical Education and Research,Chandigarh, India.

Received for publication July 28, 1995 Revisions requested Sept. 19, 1995; revisions received Feb. 7, 1996 Accepted for publication Feb. 13, 1996. Address for reprints: R. K. Suri, FAMS, FIACS, Professor and Head, Department of Cardiovascular and Thoracic Surgery, Postgraduate Institute of Medical Education and Research, Sector 12, Chandigarh—160 012, India.

Abstract

The costs of heart operations and the problems related to anticoagulation after prosthetic valve replacement are among the limitations faced by patients in nonindustrialized countries with mitral stenosis caused by chronic rheumatic heart disease. The young age at which these patients are seen also compels the surgeon to preserve the native valve. The least costly and optimal way to achieve this objective is by closed mitral valvotomy. After closed mitral valvotomy, mitral restenosis is commonly encountered. We report here our 10-year experience with operation on 113 consecutive patients with mitral restenosis. Closed transventricular revalvotomy was performed with Tubbs dilator in 105 of 113 patients. Mean age was 34.3 years, with a male to female ratio of 1:1.5. Most patients were in New York Heart Association functional classes III and IV (74.3% and 19.4%, respectively). Mean interval between first and second valvotomy was 9.4 years. Hospital mortality rate was 2.8%, trivial postoperative mitral regurgitation occurred in 16.1%, and moderately severe regurgitation occurred in 1.9%. Early postoperative systemic embolism occurred in 3.8% of the cases. Moderate to excellent symptomatic improvement was noted in 89.4% of the cases and poor results were seen in 10.2%. Late follow-up of 76 patients ranged from 2 to 10 years (mean 3.8 years), with 39.4% patients in New York Heart Association class I and 50% in class II. Close mitral revalvotomy is thus an economical, simple, and safe palliative procedure that carries good long-term results. (J THORAC CARDIOVASC SURG 1996;112:727-30)

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