右心室间隔部起搏的安全性研究

目的:研究右心室间隔部起搏的安全性。方法:35例需起搏器植入的患者,随机分组,分别采用VVI或DDD起搏模式,其中17例行右心室间隔部位起搏(RVS组),18例行右心室心尖部起搏(RVA组),比较研究不同起搏部位的右心室电极在术中、术后1个月、术后3个月的电压阈值、阻抗、感知的差异,以及手术中右心室电极到位后所需的X线曝光时间的差异。并且通过超声心动图比较两组在术后3个月心功能参数的差异。结果:17例患者利用螺旋电极均成功地进行了右心室间隔部(RVS)的电极固定,未发生并发症;18例患者使用被动电极行右室心尖部(RVA)的电极植入,发生1例电极脱位,重新植入后随访3月起搏功能正常。右心室间隔部起搏时心室电极的电压阈值、阻抗和感知在术中、术后1个月、3个月与右室心尖部起搏比较没有显著性差异。术中电极到位的X线曝光时间也无明显差异。结论:与常规的右心室心尖部起搏比较,右心室间隔部起搏同样安全,操作简单易行。

Safety research on right ventricular septal pacing

Objective:To investigate the safety of right ventricular septal pacing.Methods:Thirty-five patients were randomly divided into two group,17 of which received right ventricular septal pacing(RVS group),while 18 patients received right ventricular apex pacing(RVA).Results:All the patients came through the operation without serious complications.The threshold,impedance,sensitivity were measured during implantation,1 month,3 months postimplantation and the time of X-ray exposure was observed during operation.There were no differences between the two groups.Conclusion:Compared with right ventricular apex pacing,right ventricular septal pacing is clinically feasible and safe.