置入双腔起搏心脏复律除颤器及经腋静脉送入心内电极的初步临床体会

目的　初步评价新型双腔起搏心脏复律除颤器抗室性心动过速 /室颤 (VT/VF)及心动过缓起搏的临床效果 ,了解经腋静脉送入心房及心室电极的安全性及有效性。方法　 7例室性心动过速及或室颤同时伴有心动过缓患者接受了双腔起搏心脏复律除颤器治疗 ,其中冠心病 5例、扩张性心肌病 2例。心房及心室电极均在X光线透视、静脉注入造影剂指导下 ,直接穿刺腋静脉 ,从该静脉送入。结果　脉冲发生器埋在左上胸皮下 5例 ,胸大肌与胸小肌之间 2例。仪器对所有VT/VF均能及时识别并成功治疗 ,同时提供有效的房室顺序起搏功能。所有心内电极均成功地经腋静脉送入 ,无并发症。结论　双腔起搏心脏复律除颤器不但能有效地治疗严重室性心律失常 ,而且能提供可靠的房室顺序性起搏功能 ,且经腋静脉送入电极安全 ,可靠。

Implantation of dual chamber pacemaker defibrillator and placement of endocardial leads via the axillary vein

Objectives To assess the preliminary clinical results of implantation of dual chamber pacemaker defibrillator and to evaluate the safety and effectiveness of placement of endocardial leads in the axillary vein. Methods Seven patients with ventricular tachycardia and/or ventricular fibrillation (VT/VF), associated with bradyarrhythmia received implantation of a dual chamber pacemaker defibrillator, including 5 patients with coronary artery disease and 2 patients with dilated cardiomyopathy.The atrial and ventricular leads were introduced via the axillary vein under venographic guidance. Results Dual chamber pacemaker defibrillators were successfully implanted in the left chest subcutaneous pocket in 5 patients and the left pectoral muscular pocket in 2 patients. All the VT/VF occurring either inducibly during the procedure or spontanuously during follow-up were detected promptly and treated successfully. Both the pacing and sensing functions were satisfactory. The endocardial leads required were successfully introduced via the axillary vein without major complications.Conclusion Dual chamber pacemaker defibrillators can provide reliable therapy for VT/VF and the dual chamber pacing function. Placement of endocardial leads via the axillary vein under venographic guidance is safe and effective.