Key result
Low-voltage areas link to thromboembolism, and adding LVA ablation to PVI may increase AF ablation success.
Why the study?
Targeting ablation in low-voltage areas has shown mixed results across trials, warranting a review of their role in adverse event prediction and ablation outcomes.
What is the role of low-voltage areas in predicting adverse events and guiding ablation to prevent recurrence in patients with atrial fibrillation?
What is the role of low-voltage areas in predicting adverse events and guiding ablation to prevent recurrence in patients with atrial fibrillation?
Answers are grounded in this paper and cite their sources.
Low-voltage areas serve as a surrogate for atrial fibrosis and may help predict adverse events and guide ablation in AF, though clinical trial results on LVA-targeted ablation remain mixed.
Atrial fibrosis is an independent predictor of the recurrence of atrial fibrillation (AF) after catheter ablation. Low-voltage areas (LVA) measured during catheter ablation for AF are a commonly used surrogate for the presence of atrial fibrosis. LVA are associated with clinical outcomes and comorbidities and have links to triggering sites for AF. Several trials have shown promising data of targeting ablation in LVA, however the results have been mixed. This article will review the role of LVA in the prediction of adverse events in AF patients, including stroke, how to predict the presence of LVA, and the impact of LVA ablation on the recurrence of AF.
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Gu et al. (2023) conducted a review in Atrial fibrillation. Low-voltage area (LVA) ablation vs. Pulmonary vein isolation (PVI) alone was evaluated. Low-voltage areas are associated with thromboembolic events, and adding LVA ablation to traditional pulmonary vein isolation may increase the success rate of atrial fibrillation ablation.
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