MRI guided Fibrosis Ablation with PVI no better than PVI alone in refractory AF: Study
Written By : Dr. Nandita Mohan
Medically Reviewed By : Dr. Kamal Kant Kohli
Published On 2020-10-28 13:30 GMT | Update On 2020-10-29 08:19 GMT
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According to a recent study, researchers have found that PVI alone is more effective than a pragmatic ablation approach targeting CMR-detected atrial fibrosis plus PVI in an unselected population undergoing AF ablation with low fibrosis burden.
The study is published in Circulation: Arrhythmia and Electrophysiology Journal.
Myocardial fibrosis is considered a vital key for the maintenance of atrial fibrillation (AF). Therefore, Felipe Bisbal and colleagues from the Heart Institute at the University Hospital Germans, Madrid, Spain conducted the present study which basically aimed to test the efficacy of ablating cardiac magnetic resonance (CMR)-detected atrial fibrosis plus pulmonary vein isolation (PVI).
The study model was an open label, parallel-group, randomized, controlled trial where the patients were randomized on a 1:1 basis into 2 groups- PVI plus CMR-guided fibrosis ablation (CMR group) or PVI alone (PVI-alone group).
All the individuals selected for the research were undergoing first or repeat ablation with symptomatic drug-refractory AF (paroxysmal and persistent). The primary endpoint was the rate of recurrence (>30 seconds) at 12 months of follow-up using a 12-lead ECG and Holter monitoring at 3, 6, and 12 months. The analysis was conducted by intention-to-treat, the authors mentioned.
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