| Lo LW |
------>authors3_c= ------>paper_class1=1 ------>Impact_Factor=3.475 ------>paper_class3=2 ------>paper_class2=1 ------>vol=18 ------>confirm_bywho=yjchen ------>insert_bywho=yjchen ------>Jurnal_Rank=20.0 ------>authors4_c= ------>comm_author= ------>patent_EDate=None ------>authors5_c= ------>publish_day=14 ------>paper_class2Letter=None ------>page2=807 ------>medlineContent= ------>unit=E1400 ------>insert_date=20081224 ------>iam=7 ------>update_date=None ------>author=??? ------>change_event=4 ------>ISSN=1045-3873 ------>authors_c= ------>score=500 ------>journal_name=J Cardiovasc Electrophysiol ------>paper_name=Mechanisms of recurrent atrial fibrillation: comparisons between segmental ostial versus circumferential pulmonary vein isolation. ------>confirm_date=20090501 ------>tch_id=087031 ------>pmid=17504254 ------>page1=803 ------>fullAbstract=BACKGROUND: Electrical isolation of pulmonary veins (PVs) is an effective therapy for atrial fibrillation (AF). Both segmental ostial PV ablation and circumferential ablation with PV-left atrial (LA) block have been implicated to eliminate AF. However, the mechanism of the recurrent AF after undergoing either strategy remains unclear. METHODS AND RESULTS: Of the 73 consecutive patients with symptomatic AF that underwent PV isolation and had recurrences of AF, Group 1 consisted of 46 patients (age 56 +/- 13 years old, 35 males) who underwent PV isolation by segmental ostial PV ablation and Group 2 consisted of 27 patients (age 51 +/- 11 years old, 24 males) who underwent circumferential ablation with PV-LA block. In Group 1, the earliest ectopic beat or ostial PV potentials were targeted. In Group 2, circumferential ablation with PV-LA block was performed by encircling the extraostial regions around the left and right PVs. During the first procedure, all patients had PV-AF. There was no difference in the non-PV ectopy between Group 1 and Group 2. During the second procedure, the incidence of an LA posterior wall ectopy initiating AF was significantly lower (20% vs. 0%, P = 0.01) in Group 2. There was no difference in the PV ectopy initiating AF during the second procedure. CONCLUSION: Circumferential ablation of AF with PV-LA block may eliminate the LA posterior wall ectopy and decrease the incidence of LA posterior wall ectopy initiating AF during the second procedure. ------>tmu_sno=None ------>sno=21035 ------>authors2=Tai CT ------>authors3=Lin YJ ------>authors4=Chang SL ------>authors5=Wongcharoen W ------>authors6=Hsieh MH, Tuan TC, Udyavar AR, Hu YF, Chen YJ, Tsao HM, Chen SA. ------>authors6_c= ------>authors=Lo LW ------>delete_flag=0 ------>SCI_JNo=None ------>authors2_c= ------>publish_area=0 ------>updateTitle=Mechanisms of recurrent atrial fibrillation: comparisons between segmental ostial versus circumferential pulmonary vein isolation. ------>language=2 ------>check_flag=None ------>submit_date=None ------>country=None ------>no=8 ------>patent_SDate=None ------>update_bywho=None ------>publish_year=2007 ------>submit_flag=None ------>publish_month=5 |