动脉硬化疾病患者右室流出道起搏的探讨

目的探讨动脉硬化疾病患者适宜的起搏部位。方法7例(冠心病3例、高血压4例)置入翼状电极至右室心尖部后起搏及感知功能障碍的患者,重置螺旋电极至右室流出道,观察其前后的起搏及感知功能。结果7例右室流出道起搏的起搏阈值较右室心尖部起搏显著降低,感知阈值较右室心尖部显著升高(0.5±0.2Vvs8.7±1.6V,10.6±3.6mVvs2.7±0.8mV,P<0.01),阻抗无明显差异。随访16±6个月,无电极脱位,起搏感知功能良好。结论右室流出道可作为有动脉硬化病史患者的起搏部位。

Research on right ventricular outflow tract pacing for patients with arterial sclerosis

Objective To investigate the preferable permanent pacing site for patients with arterial sclerosis.Methods 7 cases(coronary heart disease 3 cases,hypertension 4 cases)that had been inserted passive fixation leads in the apex of right ventricle(ROA)were included.And active-fixation screw-in leads had been inserted onto right ventricular outflow tract(RVOT)so as to observe their pacing and sensing function.Results The capture threshold of RVOT pacing was lower than ROA pacing while the sense threshold was higher than ROA(0.5±0.2 V vs 8.7±1.6 V,10.6±3.6 mV vs 2.7±0.8 mV,P<0.01).Lead impedance had no difference.After 16±6 months follow-up there were no lead dislodgments,or failure to sense and pace.Conclusions RVOT can be the preferable permanent pacing site for patients with arterial sclerosis