论文部分内容阅读
15条犬心室壁内注射乌头碱诱发室性心动过速(VT)后,5条作为对照组,10条行直流电消融术治疗为治疗组.对照组VT持续时间达948.8±420.5s.治疗组中7条VT被终止,有效率为70%,其VT持续时间仅为52.3±10.5s(P<0.001);3条发生室颤,心脏穿孔而死亡.病理检查发现直流电消融能引起心肌组织局灶性出血、坏死.另对4例VT病人进行直流电消融,电击后随访3～30个月(平均18.7个月),2例术后4～5个月VT复发,但发作时的心室率较术前明显减慢,发作次数较术前明显减少.表明经导管直流电消融治疗VT有一定疗效.文中还对经导管直流电消融的标测定位和副作用等进行了讨论.
Fifteen canine ventricular wall injection of aconitine-induced ventricular tachycardia (VT), five as a control group, 10 were treated by DC ablation.The control group VT duration of 948.8 ± 420.5s. Seven VTs were terminated, with an effective rate of 70%, with a VT duration of only 52.3 ± 10.5 s (P <0.001), three with ventricular fibrillation and cardiac perforation, and died. Pathological examination revealed that DC ablation causes myocardial tissue Focal bleeding and necrosis.At the same time, DC ablation was performed in 4 patients with VT, followed up for 3 to 30 months (average 18.7 months) after electric shock and 2 patients relapsed 4 to 5 months after VT.However, the ventricular rate Compared with the preoperative significantly slowed down, the number of seizures significantly reduced compared with preoperative.It shows that the treatment of VT by catheter DC ablation have a certain effect.This paper also on the catheter ablation localization and side effects were discussed.