emergency cardiac pacing

例句：

1. 1.During an emergency, the heart pacer was used to restore normal rhythm.
   在紧急情况下，使用心脏起搏器来恢复正常的心律。
2. 2.The patient's condition required urgent cardiac pacing.
   患者的病情需要紧急的心脏起搏。
3. 3.The doctor inserted a temporary pacer into the patient's chest during the procedure.
   医生在手术过程中将一个临时起搏器插入患者胸部。