Study of electrophysiological properties of recurrent atrial arrhythmia after minimally invasive pulmonary vein isolation for atrial fibrillation
ZENG Ya-ping
ZHU Xiao-ling
CUI Yong-qiang
LI Yan
LIU Xin-peng
XU Chun-lei
MENG Xu
Abstract：Objective To observe the electrophysiological properties of patients with recurrent atrial arrhythmia after minimally invasive pulmonary vein isolation for atrial fibrillation.Methods Eight patients with recurrent atrial arrhythmia after minimally invasive pulmonary vein isolation were recruited(3 cases with paroxysmal atrial fibrillation and 5 cases with persistent atrial fibrillation).Catheter ablation guided by Carto mapping was performed and the characteristics of electrophysiology were observed.Results Recurrent atrial fibrillation occurred in 4 patients; atrial tachycardia occurred in 1 patient and atrial flutter was present in 3 patients.Carto mapping revealed that in 3 atrial fibrillation patients,lesion gaps were present at the roof and the bottom of pulmonary vein.The fourth recurrent atrial fibrillation was found to have a gap in pulmonary vein isolation ring.One patient with atrial tachycardia was found to have microreentry around the base of the left atrial appendage.In 3 patients with atrial flutter,ectopic focus was found to be localized around the mitral valve annulus in 2 patients and around the left atrial roof in one patient.All 8 patients underwent ablation successfullv.At the latest follow-up,all patients were free of arrhythmias and independent of antiarrhythmic drugs.Conclusions Pulmonary vein conduction at the roof and the bottom of the pulmonary vein after pulmonary vein isolation is the dominant factor responsible for recurrent atrial tachyarrhythmia.Left atrial-related flutter is a common form of arrhythmia.
Keywords：Atrial fibrillationMinimally invasive surgeryRadiofrequency ablation
Publication Date：2013-01-01
Online Publishing Date：2026-09-14(First online date of this platform, not the publication date of the document)
Pages：3( 1-3 )