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The Journal of Thoracic and Cardiovascular Surgery, Vol 79, 12-18, Copyright © 1980 by The American Association for Thoracic Surgery and The Western Thoracic Surgical Association

ARTICLES

Surgical treatment of mitral insufficiency secondary to coronary artery disease

JH Kay, P Zubiate, MA Mendez, N Vanstrom, T Yokoyama and MA Gharavi

From 1970 to 1978, 61 patients were operated upon for mitral insufficiency secondary to coronary artery disease. These patients were between 44 and 71 years of age and all were in Class III or IV of the New York Heart Association Classification. The left ventricular end- diastolic pressure was 15 mm Hg or more in 32 of the 39 patients in whom it was measured. Twenty-four of 31 patients in whom right heart catheterization was performed had a systolic pulmonary artery pressure of 50 mm Hg or greater. All 61 patients had myocardial revascularization, 52 had repair of the mitral valve, and nine had mitral valve replacement. There were five hospital deaths in these 61 patients. Among the nine patients with a preoperative ejection fraction of 0.1 to 0.2, there were two hospital deaths; among the 20 patients with a preoperative ejection fraction of 0.25 to 0.40, there were two hospital deaths; and among the 32 patients with a preoperative ejection fraction of 0.45 to 0.70, there was only 1 hospital death. For those patients with repair and revascularization, the survivability was 81% at 7 years. In the patients with repair and myocardial revascularization, the incidence of peripheral embolization was 0.5% per patient-year.

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