三尖瓣病变是一种常见的心脏瓣膜病变,目前临床上对于病变严重者多首选三尖瓣置换术（tricuspid value replacement,TVR）治疗。行TVR的患者多数心功能较差,需同期处理心脏合并病变,因此,术后治疗风险及并发症发生率较高。由于三尖瓣解...三尖瓣病变是一种常见的心脏瓣膜病变,目前临床上对于病变严重者多首选三尖瓣置换术（tricuspid value replacement,TVR）治疗。行TVR的患者多数心功能较差,需同期处理心脏合并病变,因此,术后治疗风险及并发症发生率较高。由于三尖瓣解剖位置原因,TVR术中极有可能损伤心脏传导系统或冠状动脉等结构,从而导致患者术后发生各种心律失常,包括室上性心动过速、窦性心动过缓、窦性停搏、Ⅲ度房室传导阻滞等，其总体发生率约为21．9％。展开更多
Objective Right ventricular outflow tract septum has become widely used us an electrode placement site. However, data concerning lead performances and complications for lead repositioning with this technique were scan...Objective Right ventricular outflow tract septum has become widely used us an electrode placement site. However, data concerning lead performances and complications for lead repositioning with this technique were scant. The purpose of this study was to observe long- term lead performances and complications of right ventricular outflow tract septal pacing and provide evidences for choosing an optimal electrode implantation site. Methods Thirty-six patients with septal active electrode implantation and 39 with apical passive electrode implantation were enrolled in this study. Pacing threshold, R-wave sensing, lead impedance, pacing QRS width and pacing-related compli- cations for two groups at implantation and follow-up were compared. Results There were higher pacing threshold and shorter pacing QRS width at implantation in the septal group compared with the apical group. There were no differences between the septal and the apical groups in pacing threshold, R-wave sensitivity, lead impedance and pace-related complication during a follow-up. Conclusions Right ventricular outflow tract septum could be used as a first choice for implantation site because it had long-term stable lead performances and no serious complications compared with the traditional apical site.展开更多
文摘三尖瓣病变是一种常见的心脏瓣膜病变,目前临床上对于病变严重者多首选三尖瓣置换术（tricuspid value replacement,TVR）治疗。行TVR的患者多数心功能较差,需同期处理心脏合并病变,因此,术后治疗风险及并发症发生率较高。由于三尖瓣解剖位置原因,TVR术中极有可能损伤心脏传导系统或冠状动脉等结构,从而导致患者术后发生各种心律失常,包括室上性心动过速、窦性心动过缓、窦性停搏、Ⅲ度房室传导阻滞等，其总体发生率约为21．9％。
文摘Objective Right ventricular outflow tract septum has become widely used us an electrode placement site. However, data concerning lead performances and complications for lead repositioning with this technique were scant. The purpose of this study was to observe long- term lead performances and complications of right ventricular outflow tract septal pacing and provide evidences for choosing an optimal electrode implantation site. Methods Thirty-six patients with septal active electrode implantation and 39 with apical passive electrode implantation were enrolled in this study. Pacing threshold, R-wave sensing, lead impedance, pacing QRS width and pacing-related compli- cations for two groups at implantation and follow-up were compared. Results There were higher pacing threshold and shorter pacing QRS width at implantation in the septal group compared with the apical group. There were no differences between the septal and the apical groups in pacing threshold, R-wave sensitivity, lead impedance and pace-related complication during a follow-up. Conclusions Right ventricular outflow tract septum could be used as a first choice for implantation site because it had long-term stable lead performances and no serious complications compared with the traditional apical site.
