Pulmonary vein stenosis detection by early cardiac magnetic resonance imaging post-atrial fibrillation ablation
© Chang et al; licensee BioMed Central Ltd. 2012
Published: 1 February 2012
Identification of early post-atrial ablation MRI characteristics can help predict the development of significant chronic pulmonary stenosis.
Pulmonary vein stenosis (PVS) is a rare complication of atrial fibrillation (AF) ablation with a rate of significant stenosis, defined as >50%, of 1.3% in a recent multicenter study. As significant morbidity is associated with PVS, detection and surveillance with non-invasive imaging is routine. In this study, we hypothesized that prediction of PVS can be determined with early MRI to identify patients at risk for this complication.
All patients with significant PVS 3moPA demonstrated signs of pulmonary vein narrowing (>20%) on the 24hrPA MRI scan. In addition, small PV caliber on baseline imaging appears to predispose to PVS with the LIPV involved disproportionately. Overall, MRI image characteristics are useful for predicting PVS and may help determine which patients will benefit from surveillance imaging.
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