cardiac rate dependent conduction

例句：

1. 1. This medication is effective in treating arrhythmias, which are characterized by irregular heart rates.
   这种药物在治疗心律失常方面非常有效，心律失常的特征是心跳不规则。
2. 2.The patient's cardiac rate was monitored throughout the procedure to ensure proper functioning of the pacemaker.
   在整个手术过程中，患者心律被监测以确保起搏器的功能正常。
3. 3.The study found that atrial fibrillation, a type of arrhythmia, can be effectively treated with a drug that affects cardiac rate.
   研究发现，一种影响心率的药物可以有效地治疗房颤，这是一种心律失常类型。