fixed splitting of second heart sound

例句：

1. 1.The doctor diagnosed the patient with a fixedsplitting of the second heart sound.
   医生诊断患者患有二尖瓣固定分裂音。
2. 2. The patient's condition was complicatedby a fixed splitting of the secondheart sound.
   患者的病情复杂，伴有二尖瓣固定分裂音。
3. 3. The echocardiogram revealed a fixed splitting ofthe second heart sound, indicating a potentialvalve issue.
   超声心动图显示二尖瓣固定分裂音，暗示可能存在瓣膜问题。