apexcardiograph

例句：

1. 1. The apexcardiograph was used to monitor the patient's heart rate during the procedure.
   心电图记录仪被用来监测患者手术过程中的心率。
2. 2. The doctor ordered an electrocardiogram to rule out any underlying heart conditions.
   医生要求进行心电图检查，排除任何潜在的心脏疾病。
3. 3. During the test, the patient's ECG traced showed a normal rhythm.
   测试期间，患者的心电图显示正常节律。