摘要缺血性二尖瓣关闭不全（ IMI）是目前心血管外科的治疗难点。三维超声可以精确地定量评价IMI，术中经食管超声心动图能够获得IMI的详尽信息，但存在低估的可能性。静息时二尖瓣有效反流面积是IMI患者的独立预后因素，需要在术前对患者进行充分评估，以预测手术效果及风险。 IMI的外科治疗策略，需要综合考虑患者的症状、IMI的程度、心脏重构的情况进行选择。中度IMI的治疗策略应权衡患者手术风险及长期获益，以决定是否在CABG同期行二尖瓣手术。重度IMI应该行二尖瓣成形术还是置换术，目前仍存争议，应该根据患者二尖瓣病变的程度谨慎选择。二尖瓣成形术的效果取决于是否正确施行修复，应灵活选择适宜的成形技术和成形环。

abstractsTreatment of ischemic mitral incompetence ( IMI ) is an important problem in cardiovascular surgery, and it is arguing to the best strategies for surgical treatment of IMI. IMI can be quantitative assessment precisely by three?dimensional ultrasonic sound. Perioperative transesophageal echocardiography can acquire detailed information about IMI, but it is possible to underestimate the degree of IMI. The effective mitral regurgitation area at resting are the independently prognosis factor in patients with IMI. So it is necessary to sufficiently evaluate the patients before operation in order to predict the operative effect and risk. It is the choice for the best strategies for surgical treatment of IMI regarding to patients symptom, the degree of IMI, cardiac reconstruction. The therapy strategies should be weighed the operative risk and long?term benefit for moderate IMI, so that combining CABG with concomitant mitral surgery or not would be decided. It is arguing to mitral valve replacement or repair for surgical treatment of severe IMI. The surgical methods should be chosen carefully according to left ventricular remodeling and pathological changes of mitral valve. The effect of mitral valve repair is dependent on correctly perform. The suitable repair technique and plasty ring should be selected actively.