主动固定电极在右室高位间隔部起搏的临床应用

Clinical application of active electrode lead in high septal surfaces of right ventricular pacing

目的探讨主动固定电极在右室高位间隔部的定位方法及相关参数的变化。方法将64例符合起搏器植入患者随机分成两组,分别施行主动固定电极右室高位室间隔部起搏(主动固定组)与被动固定电极行右室心尖部起搏(被动固定组),记录植入时间、曝光时间、QRS宽度及相关参数并进行比较分析。结果主动固定组较被动固定组植入时间及曝光时间长,差异有统计学意义;两组起搏阈值、感知、阻抗等参数比较差异无统计学意义(P>0.05);但主动固定组QRS波宽度明显小于被动固定组,差异有统计学意义(P<0.05)。结论应用主动固定行右室高位间隔部起搏是安全可行的,并且更加符合生理性起搏。

Objective To investigate the methods and points of the right ventricular high septal pacing and the change of related parameters. Methods Sixty - four cases required pacemaker because of slow arrhythmia were randomly divided into the active fixation group and the passive fixation group. The patients＂ general situation and the time of implantation and radiation exposure were observed. Also the threshold, R - wave height, impedance and the QRS duration were recorded. Results Thirty two active fixed leads were used. The time of implantation and radiation exposure in active fixation group were longer, and the difference was statistically significant. The pacing thresholds, R- wave height, impedance parameters were not statistically significant. However, the QRS duration was shorter in active fixation group （ P 〈 0. 05）. Conclusion The application of the active electrode lead in the high septal surfaces of the right ventrieular pacing is safe and feasible, and is more associated with wider physiological ventricular function.