impedance cardiography

例句：

1. 1.Impedance cardiography is a technique used to measure the electrical activity of the heart.
   阻抗心脏图是一种用于测量心脏电活动的技术。
2. 2.In impedance cardiography, electrodes are placed on the chest and abdomen to detect changes in electrical resistance.
   在阻抗心脏图中，电极被放置在胸部和腹部上，以检测电阻的变化。
3. 3.Impedance cardiography has been shown to be effective in diagnosing arrhythmias and other heart conditions.
   阻抗心脏图已被证明在诊断心律失常和其他心脏疾病方面是有效的。