ArticleOpen heart2026
Left atrial anterior wall ablation reduces the recurrence of atrial fibrillation in patients with aortic encroachment.
Article in Open heart, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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10 authors.
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Abstract
backgroundMechanical compression from the ascending aorta on the left atrial anterior wall (LAAW) can cause low voltage areas (LVAs), which are associated with a higher risk of atrial fibrillation (AF) recurrence after catheter ablation. This study investigates the AF recurrence rate post-LAAW complex fractionated atrial electrograms (CFAE) ablation or LAAW linear ablation in AF patients with aortic encroachment.
methodsWe retrospectively analysed AF patients who underwent first-time ablation between 2019 and 2023 in our department and had preablation cardiac CT scans. The impact of LAAW-LVAs and different LAAW ablation strategies on AF recurrence within 1-year postprocedure was evaluated.
resultsIn total, 267 patients had both aortic encroachment and LAAW-LVAs. In the absence of LAAW ablation, patients with aortic encroachment had a significantly higher risk of AF recurrence compared with those without (adjusted HR (aHR): 2.29, 95% CI: 1.27 to 4.15, p=0.006). Patients receiving LAAW CFAE ablation had a higher recurrence rate than those receiving LAAW linear ablation (aHR: 3.29, 95% CI 1.42 to 7.63, p=0.006). Multivariable analysis identified that LAAW linear ablation was a strong independent predictor of reduced AF recurrence (HR: 0.13, 95% CI 0.06 to 0.28, p<0.001).
conclusionsAortic encroachment is a common and significant risk factor for AF recurrence after ablation. When LAAW-LVAs are present, performing LAAW linear ablation might be a highly effective strategy to reduce postablation AF recurrence.
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