采用普通心房电极行右室流出道起搏的初步探讨

The application of atrial electrode in right ventricular outflow tract pacing

目的 探讨心房J型电极在右室流出道（RVOT）起搏的临床应用。方法 对8例采用普通心房电极行RVOT起搏（其中5例进行了永久性置入）的患者进行了起搏阈值测定及随访。结果 心房电极行RVOT起搏，起搏阈值、R波振幅和电极阻抗与心尖部起搏比较无差异（P〉0.05）；操作简单、起搏成功率高。随访3-6个月无电极脱位，起搏功能良好。结论 普通心房J型电极似可以替代螺旋电极行RVOT永久起搏。

Objective To explore the clinical application of atrial electrode in right vcntricular otuflow tract （RVOT） pacing. Methods Paramenters in 8 cases （including the permanent RVOT pacing in 5 cases） were investigated and followed up. Results Stimulation threshold, pulse width and the impedance were no significant difference between RVOT pacing and right ventricular apex pacing . Atrial lead could be inserted in RVOT with easy manipulation and high success rate. In 3 - 6 months follow-up , there was not electrode dislodgement and pacing condition had maintained. Conclusions The usual atrial electrode could replace the spiral electrode for pacing in RVOT.