cardiac valve replacement

例句：

1. 1. Cardiac valve replacement is a surgical procedure to replace damaged heart valves.
   心脏瓣膜置换是一种外科手术，用于替换受损的心脏瓣膜。
2. 2. The patient underwent cardiac valve replacement surgery last week.
   患者上周接受了心脏瓣膜置换手术。
3. 3. This procedure is often performed when patients have severe heart valve disease.
   当患者患有严重的心脏瓣膜疾病时，通常会进行这种手术。