主动导线在右心室流出道间隔部起搏的研究

目的 探讨采用主动固定导线行右心室流出道(RVOT)间隔部起搏的可行性和安全性.方法 用主动固定导线行RVOT间隔部起搏(主动导线组)45例,用被动固定导线行右心室心尖部(RVA)起搏(被动导线组)43例,记录两组患者术中及术后的各项检测参数并进行比较.结果 两组均顺利完成手术,未出现严重并发症.主动导线组固定次数(1.5±0.8)次与被动导线组(1.3±0.5)次差异无统计学意义(t=1.41.P＞0.05),主动导线组手术时间(73.45±11.21)min较被动导线组(68.34±11.43)min长(t=2.12,P＜0.05),曝光时间(9.13±3.04)min较被动导线组(7.11±2.21)min长(t=3.58,P＜0.01).主动导线置入15min后可达到理想参数,但起搏阈值(0.69±0.18)V较被动导线组(0.56±0.12)V高(t=4.00,P＜0.01).术后1个月时随访,两组的起搏参数主动导线组起搏阈值(0.70±0.19)V、阻抗(699.31±147.25)Ω、感知灵敏度(13.57±4.56)mV;被动导线组起搏阈值(0.58±0.14)V、阻抗(662.79±126.14)Ω、感知灵敏度(14.51±4.31)mV.手术时主动导线组旋出15min后的起搏阈值(0.69±0.18)V、阻抗(708.22±142.03)Ω、感知灵敏度(13.33±4.71)mV;被动导线组起搏阈值(0.56±0.12)V、阻抗(653.62±117.58)Ω、感知灵敏度(14.76±3.98)mV,两组比较比较差异无统计学意义(均P＞0.05).结论 使用主动导线行RVOT间隔部起搏安全可行.

A comparative study between right ventricular outflow tract ventricular septal pacing and right ventricular apical pacing

Objective To investigate the feasibility and safety of right ventricular outflow tract(RVOT) ventricular septal pacing.Methods Eighty eight patients undergoing implantation of pacemaker were randomly divided into two groups.Forty five patients received the RVOT ventricular septal pacing with active fixation lead(active lead group),and 43 patients received the right ventricular apical pacing with passive fixation lead(passive lead group).The parameters in and after operation of two groups were recorded and c...