Fifty consecutive patients aged 52±12 years who are suffering from drug refractory
atrial fibrillation (AF) underwent baseline and postablation 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 postprocedural 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 midterm follow-up. Late PV anatomical
assessment is needed to confirm these results on long-term follow-up.
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Publication history
Published online: January 22, 2007
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Copyright
© 2006 Published by Elsevier Inc.
