Risk factors of perioperative mortality after mitral leaflet repair

Objectve To analyze the risk factors of perioperative mortality after mitral leaflet repair retrospectively.Methods Data of 542 patients undergoing mitral leaflet repair in An Zhen Hospital between March 1985 and June 2006 were collected.Preop- erative and operative variates were evaluated by univariate and multivariate logistic stepwise regression analysis,Results 20 patients (3.7 %)died postoperatively within 30 days.Univariate risk factors included age,preoperative congestive heart failure,preoperative left ventricular end-systolic diameter,preoperative left ventricular ejection fraction,NYHA class Ⅲ-Ⅳ,CPB time,Cross-clamp time and mltral leaflet repair concomitant coronary artery bypass graft(CABG).Logistic stepwise regression analysis showed that preopera- tive congestive heart failure,preoperative left ventrieular ejection fraction and mitral leaflet repair concomitant CABG were independent risk factors of mortality after mitral leaflet repair.Conclusion Conclusion It suggests that preoperative congestive heart failure,preo- perative left ventricular ejection fraction and mitral leaflet repair concomitant CABG are independent risk factors for mortality after mi- tral leaflet repair.