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Results: 31 cases of researches were selected, including 17 cases of case-control researches, 11 cases of cohort researches, and 3 cases of randomized controlled trials, with a total of 3468 patients. Left ventricular end diastolic dimension: 6 months after operation, 12 months after operation; Left ventricular end systolic dimension: 6 months after operation, 12 months after operation; Left ventricular ejection fraction: 6 months after operation, 12 months after operation; Early mortality of postoperative, left ventricular rupture, the differences of above outcome indicators between the two groups have statistical significance.

american journal of cardiovascular and thoracic surgery

The Postoperative Cardiac Function and Complications after Mitral Valve Replacement with Complete Preservation of Subvalvular Apparatus versus Posterior Subvalvular: A Meta Analysis