ECG

例句：

1. 1.The ECG readings showed a normal rhythm.
   心电图显示正常节律。
2. 2. During the procedure, the doctor monitored the patient's ECG.
   在手术过程中，医生监测了患者的心电图。
3. 3. The ECG results were critical for diagnosing the patient's condition.
   心电图结果对诊断患者病情至关重要。