射频电能消融术治疗房室结折返性心动过速的临床应用

应用射频电能房室连接区部分消融术治疗5例房室结折返性心动过速.术后5例之房室逆行传导均消失,4例房室结双径路不复存在,其中3例伴Ⅰ度房室结内传导阻滞,临床电生理复查5例之心动过速不能诱发.随访1.5～12.5月,所有患者均未再发心动过速,亦未服用任何抗心律失常药物.作者认为射频电能是改变房室传导较好的能源,具有比直流电安全、方便,损伤小,疗效高的特点.此外,本文对达到良好改变房室传导的射频消融部位,所用电能大小及释放时间等作了讨论.

Transcatheter Modification of Atrioventricular Junction With Radiofrequency Energy for Control of Atrioventricular Nodal Reentrant Tachycardia

Transcatheter atrioventricular (AV) junction ablation with radiofrequency energy was performed in five patients with AV nodal reentrant tachycardia. Disappearance of ventriculoa-trial condcution in all patients was showed and no dual pathway was observed in four patients, in whom three patients occurred first degree AV block after ablation. No tachycardia was showed in all patients in the electrophysiology test and in follow-up of 1. 5-12. 5 months. The results sug-gested that the application of radiofrequency energy may be a suitable and safe therapeutic mothed for modification of AV nodal conduction in patients with AV nodal reentrant tachycardia.