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总结１９９０年４月至１９９５年１２月收治婴幼儿二尖瓣关闭不全（ＭＩ）成形术的临床经验。本组７１例中男３５例、女３６例，年龄５个月～３岁、平均２．１岁，体重６～１４ｋｇ、平均１０．２ｋｇ，４１例（５７．８％）＜１０ｋｇ。重度二尖瓣关闭不全１６例，中度４４例，轻度１１例。主要病种包括：单纯ＭＩ３例，ＭＩ＋室间隔缺损和（或）动脉导管未闭３５例，ＭＩ＋房间隔缺损或单心房２２例（Ｉ孔型１６例，Ｉ孔型６例；单心房４例），ＭＩ＋Ｉ孔房间隔缺损和室间隔缺损１１例。手术根据二尖瓣的病理采用瓣交界缝缩、瓣环环缩、修补前瓣叶裂、腱索短缩及转移和后瓣叶成形及共同房室瓣修补等方法修复二尖瓣。同期矫治其它心内畸形。结果术后早期死亡４例（术后感染和低心排综合征各２例），死亡率５．６％。６７例出院病儿中４２例（６２．７％）随诊２个月～５年，平均１．１年。轻度二尖瓣关闭不全５例，中度４例，无重度者；心脏明显缩小。作者认为婴幼儿二尖瓣关闭不全可采用瓣膜成形术治疗，并能取得良好的术后早期和晚期结果。
The clinical experience of infants with mitral regurgitation (MI) from April 1990 to December 1995 was summarized. The group of 71 patients, 35 males and 36 females, aged 5 months to 3 years old, an average of 2.1 years old, weighing 6 ~ 14kg, an average of 10.2kg, 41 cases (57.8%) <10kg. 16 cases of severe mitral regurgitation, moderate in 44 cases, mild in 11 cases. The main diseases include MI3 cases, MI + ventricular septal defect and / or patent ductus arteriosus in 35 cases, MI + atrial septal defect or single atrial in 22 cases (I hole in 16 cases, I hole in 6 cases; single atrium in 4 cases ), MI + I hole atrial septal defect and ventricular septal defect in 11 cases. Mitral valve mitral valve mitral valve mitral valve mitral valve mitral valve mitral valve mitral valve mitral valve mitral valve mitral valve mitral valve mitral valve mitral valve repair Correction of other heart malformations over the same period. Results The early postoperative death in 4 cases (postoperative infection and low cardiac output syndrome in 2 cases), the mortality rate was 5.6%. Of the 67 discharged children, 42 (62.7%) were followed up for 2 months to 5 years with an average of 1.1 years. Mild mitral regurgitation in 5 cases, moderate in 4 cases, no severe; heart was significantly reduced. The authors believe that infants with mitral regurgitation can be treated with valvuloplasty and can achieve good postoperative early and late results.