mitral valvotomy

例句：

1. 1. The patient underwent mitral valvotomy for severe aortic stenosis.
   该患者因严重的主动脉狭窄接受了主动脉瓣切开术。
2. 2.The surgery was complicated by the need to perform mitral valvotomy.
   手术过程中需要执行主动脉瓣切开术，这使得手术变得复杂。
3. 3.Mitral valvotomy is a common procedure performed during heart surgery to relieve symptoms of aortic stenosis.
   主动脉瓣切开术是心脏手术中常见的程序，用于缓解主动脉狭窄的症状。