1. Patient's basal heart rate, battery capacity, pacing electric voltage, pacing frequency, resistance, threshold value, pulse width and sensing electric current had all affected the PM's longevity (all P < 0.05) counted by Wilcoxon (Gehan) test.
单因素统计分析显示：患者基础心率、电池容量、起搏电压、起搏频率、阻抗、阈值、脉宽和感知电流对PM的寿命均有影响（均P<0.05）。