endocardiectomy

例句：

1. 1. The patient underwent endocardiectomy to repair the damaged heart valves.
   患者接受了心脏内手术来修复受损的心脏瓣膜。
2. 2. Theprocedure was performed by aspecialist in cardiothoracic surgery.
   该手术由胸心外科专家执行。
3. 3. Endocardiectomyis a complex and risky procedure thatrequires specialized training.
   心脏内手术是一项复杂且风险较高的程序，需要专门的培训。