1 From the Harvard Medical Unit and Thorndike Memorial Laboratory of the Boston City Hospital, the Surgical Service of the Peter Bent Brigham Hospital, the Thoracic Surgical Service of the Mt. Auburn Hospital and the Departments of Medicine and Surgery of the Harvard Medical School.
A study is reported of an annual follow-up over a 15- to 20-year period of the survivors of the first 1,000 patients undergoing closed mitral valvuloplasty for mitral stenosis. In addition to a report of the status of the patients at each year of follow-up, a detailed analysis has been made of the factors influencing results of surgery 15 years after operation. The most important factor adversely influencing long-term results is significant mitral valve calcification. This is true regardless of age, sex, preoperative status, concomitant mitral insufficiency or minor degrees of aortic valve disease. A beneficial effect of younger age (below 40 years at surgery) or lack of associated mitral insufficiency is apparent only in Group III patients with noncalcific valves, and in these two subgroups the results were 41 and 37 percent improved, respectively. These figures do not include the large number of patients who have again been improved following a second or even third operation. Late systemic embolization occurs infrequently after such surgery. (1.1% per patient year of follow-up). In patients without significant valvular calcification and without substantial mitral incompetence or significant associated valvular disease, closed mitral valvuloplasty is the operation of choice. The indications for closed versus open operation for mitral stenosis are discussed in detail.
Submitted on January 25, 1973
© 1973 American Heart Association, Inc.
Fifteen-to Twenty-Year Study of One Thousand Patients Undergoing Closed Mitral Valvuloplasty
Key Words: Mitral valve calcification • Systemic embolization • Sex • Age • Mitral insufficiency • Open heart surgery
Accepted on March 9, 1973
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