阵发性心房颤动复杂病例的射频消融

目的　对阵发性心房颤动 (房颤 )复杂病例的射频消融进行方法学探讨。方法　 130例患者中 ,男性 87例 ,女性 4 3例 ,平均年龄 5 6岁 ;均经 2 4小时动态心电图和普通心电图证实为阵发性房颤。常规穿刺放置导管后 ,根据每个肺静脉造影所显示的解剖形态 ,在环状电极的引导下 ,依次对4根肺静脉进行电隔离。结果　 (1) 130例房颤患者中造影发现 2 1例患者的 2 1根肺静脉开口巨大 ,发生率为 16 2 % ,5根为左侧肺静脉共干 ,发生率为 3 8% ,3根为右侧肺静脉共干 ,发生率为 2 3% ;6例患者右肺静脉呈分支状多个开口 ,发生率为 4 7%。 (2 )共对 130例患者 341根肺静脉进行了电隔离 ,2 9根肺静脉未达到完全电隔离 ,包括上述 2 1例患者中的 11例 ,发生率为 8 3% ,其中 14根发生在左上肺静脉 ,8根发生在左下肺静脉 ,5根发生在右下肺静脉 ,2根发生在右上肺静脉。结论　肺静脉自身的解剖变异是导致射频消融中病例复杂的主要因素

Radiofrequency ablation for the treatment of paroxysmal atrial fibrillation in complicated cases

Objective This study was aimed to investigate the methodology of radiofrequency ablation for paroxysmal atrial fibrillation (PAF) in complicated cases Methods 130 cases (87 males) with the average age of 56 years were enrolled consecutively Each patient was diagnosed PAF by Holter and ECG After routine transseptal procedure and cannulation, retrograde pulmonary venography was taken to show the anatomic morphology of all pulmonary veins (PVs) Under the guidance of Lasso circular mapping catheter, all cases underwent electrical isolation for four PVs using the saline irrigated ablation catheter Results (1) By venography,21 PVs (16 2%) were found to have enormously dilated ostia in 21 out of 130 cases 5 PVs (3 8%) had left common trunks 3 PVs (2 3%) had right common trunks In 6 cases right PVs were found to have multiple bifurcated ostia, and the prevalence rate was 4 7% (2) A total of 341 PVs were targeted for segmental ablation in 130 cases Complete isolation was failed in 29 PVs, including 11 PVs with dilated ostia Among the 29 PVs, 14 were left superior PVs (LSPVs), 8 were left inferior PVs (LIPVs), 5 were right inferior PVs (RIPVs), and 2 were right superior PVs (RSPVs) Conclusion The anatomical variants of PV was the main cause of complicating radiofrequency ablation in patients with PAF