射频消融术对房室结组织学改变的实验观察

Study of Hjstological Changes after Radiofrequency Ablation of the Atrioventricular Junction

通过对7只狗房室结部位进行射频消融术,造成传导阻滞,先后于术后即刻至32天处死实验动物。组织学变化表明病灶大小与总能量无密切相关,而病灶深度与总能量有关。无1例发生并发症,故该术比较安全。

Releasing radiofrequency (RF) energy at the region of the atrioventricular junction in seven dogs resulted in conductive block. The dogs were killed immediately or within 32 days after the procedure. The histological changes indicated that the size of RF-induced lesion was not associated with the total energy but the depth. No major complications were found in the study. The results demonstrated that RF catheter ablation was a safe method.