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Effect of left atrial appendage excision on procedure outcome in patients with persistent atrial fibrillation undergoing surgical ablation.

Abstract：

BACKGROUND:Catheter ablation is less successful for treatment of persistent atrial fibrillation (PersAF) than for paroxysmal atrial fibrillation. Some studies suggest that left atrial appendage (LAA) isolation in addition to pulmonary vein isolation (PVI) is required to maximize the benefits for PersAF after ablation. OBJECTIVE:The purpose of this study was to compare the efficacy and safety of 2 surgical ablation approaches for PersAF via video-assisted thoracoscopy: PVI + box lesion and PVI + box lesion + LAA excision. METHODS:We randomly assigned 176 patients with PersAF to video-assisted thoracoscopic surgical ablation with PVI + box lesion (88 patients) or PVI + box lesion + LAA excision (88 patients). The primary endpoint was freedom from any documented atrial arrhythmia lasting >30 seconds after a single ablation procedure without antiarrhythmic drug (AAD). RESULTS:After 18 months of follow-up, 61 of 86 patients (70.9%) assigned to PVI + box lesion were free from recurrent atrial fibrillation compared to 64 of 87 patients (73.6%) assigned to PVI + box lesion + LAA excision after a single ablation procedure without AAD (P = .73). Freedom from any atrial arrhythmia after a single procedure with or without AAD was also nonsignificant (70.9% vs 74.7%, respectively). There were no significant differences between groups with regard to adverse events, including death, transient ischemic attack, stroke, pneumothorax, and hydrothorax. CONCLUSION:Among patients with PersAF, no reduction in the rate of recurrent atrial fibrillation was found when LAA excision was performed in addition to PVI and box lesion during surgical ablation.

journal_name

Heart Rhythm

journal_title

Heart rhythm

authors

Romanov A,Pokushalov E,Elesin D,Bogachev-Prokophiev A,Ponomarev D,Losik D,Bayramova S,Strelnikov A,Shabanov V,Pidanov O,Kropotkin E,Ivanickii E,Karaskov A,Steinberg JS

doi

10.1016/j.hrthm.2016.05.012

subject

Has Abstract

pub_date

2016-09-01 00:00:00

pages

1803-9

issue

9

eissn

1547-5271

issn

1556-3871

pii

S1547-5271(16)30274-0

journal_volume

13

pub_type

杂志文章,多中心研究,随机对照试验

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