cardiotomy blood return

例句：

1. 1. The patient underwent a cardiotomy to repair the damaged heart valves.
   这名患者接受了心脏手术来修复受损的心脏瓣膜。
2. 2. The surgeonperformed a cardiotomyduring the operation to remove thetumor.
   外科医生在手术中进行了心脏切口术，以切除肿瘤。
3. 3. The patient's recovery was complicated by a cardiotomy infection, which required additional treatment.
   患者的康复过程因心脏切口感染而变得复杂，需要额外的治疗。