论文部分内容阅读
一例３．５岁的女性幼儿因室间隔缺损修补术致迟发性完全性房室阻滞（ＣＡＶＢ）而安置ＶＤＤ起搏器。经锁骨下静脉途径埋置单根心房感知、心室触发起搏电极，使之于右房内塑形并贴靠房壁；起搏器埋于同侧皮下胸大肌筋膜上囊袋内。术中测得起搏阈值０．１Ｖ、脉宽０．４ｍｓ、电极阻抗５２０Ω、Ａ波振幅１．５ｍＶ、Ｖ波振幅１０．６ｍＶ，Ａ波感知设定０．２５ｍＶ。术后房室同步起搏率１００％，临床症状改善。表明ＶＤＤ起搏器不仅埋置简便，而且具有房室同步、频率应答等生理性起搏特点，是治疗幼儿ＣＡＶＢ的理想起搏方式。
A 3.5-year-old female child underwent a VDD pacemaker for delayed complete occlusion (CAVB) due to ventricular septal defect repair. The single atrium was embedded through the subclavian vein, and the pacemaker electrode was triggered by the ventricle so that it could be shaped in the right atrium and attached to the wall. The pacemaker was buried in the ipsilateral subcutaneous pectoralis major fascia. Intraoperative pacing threshold 0.1V, pulse width 0.4ms, electrode impedance 520Ω, A wave amplitude 1.5mV, V wave amplitude 10.6mV, A wave perception set 0.25mV. Postoperative atrioventricular synchrony pacing rate of 100%, clinical symptoms improved. It shows that the VDD pacemaker is not only easy to embed, but also has physiological pacing characteristics such as atrioventricular synchronization and frequency response. It is an ideal pacing method for treating CAVB in young children.