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Journal articles
MR evaluation of pulmonary vein diameter reduction after radiofrequency catheter ablation of atrial fibrillation.
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.
https://www.hal.inserm.fr/inserm-00473763
Contributor : Céline Breton <>
Submitted on : Friday, April 16, 2010 - 12:59:05 PM
Last modification on : Tuesday, February 4, 2020 - 11:52:02 AM
Contributor : Céline Breton <>
Submitted on : Friday, April 16, 2010 - 12:59:05 PM
Last modification on : Tuesday, February 4, 2020 - 11:52:02 AM
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