MR Evaluation of Pulmonary Vein Diameter Reduction After Radiofrequency Catheter Ablation of Atrial Fibrillation

Overview

Journal Eur Radiol

Specialty Radiology

Date 2006 Apr 28

PMID 16639495

Citations 5

Authors

Frederic Anselme

Gerald Gahide

Arnaud Savoure

Edouard Gerbaud

Mikael Mabru

Alain Cribier

Jean-Nicolas Dacher

Affiliations

Soon will be listed here.

Abstract

Fifty consecutive patients aged 52+/-12 years suffering from drug refractory atrial fibrillation (AF) underwent baseline and post-ablation MR angiography (MRA) at a mean follow-up of 4+/-3.5 months. Pulmonary vein (PV) disconnection was performed with a maximum energy delivery of 30 W. MRA allowed a two-plane measurement of each PV ostium. After ablation, no significant stenosis was observed, and only 1/194 (0.5%) and 3/194 (2%) PVs had a diameter reduction of 31-40% in the coronal and axial planes, respectively. There was a significant overall post-procedural PV narrowing of 4.9% in the coronal plane and 6.5% in the axial plane (P=ns between both planes). MRA is an efficient technique that can be used in pre- and postoperative evaluation of AF patients. Using a maximal power delivery limited to 30 W, no significant PV stenosis was observed at mid-term follow-up. Late PV anatomical assessment is needed to confirm these results on long-term follow-up.

Citing Articles

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