ArticleCardiology journal2025
Silent cerebral ischemic lesions in ablation-naïve patients with non-valvular atrial fibrillation: Does the pulmonary vein anatomy matter?
Article in Cardiology journal, 2025. 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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Abstract
backgroundSilent cerebral ischemic lesions (SCILs) detected by magnetic resonance imaging (MRI) can precede symptomatic stroke, the risk of which is increased five-fold in atrial fibrillation (AF) patients. In our study, we aimed to evaluate the initial incidence of SCILs in the population of patients referred for ablation due to symptomatic AF and to identify possible risk factors.
methodsA total of 110 patients, with a mean age (SD) of 59.9 (9.4) years, referred for ablation, were included in the study. In all patients, MRI was performed before the procedure to evaluate the incidence of SCILs in the ablation-naïve patients.
resultsMRI revealed preexisting SCIL in 81/110 patients (73.6%). Notably, SCILs were found in all patients with CHA₂DS₂-VASc score ≥ 4. In univariable analysis, age (p < 0.001), CHA₂DS₂-VASc score (p = 0.001), hypertension (p = 0.01), and anticoagulation duration (p = 0.023) were identified as significant risk factors for SCILs, while the presence of anatomical variants of left-sided common pulmonary veins trunk (LCPV) had negative prognostic value (p = 0.026). Multivariable logistic regression analysis identified age (p < 0.001) as the risk factor of preexisting SCILs, whereas the presence of LCPV trunk was associated with significantly lower (p = 0.005) SCILs incidence.
conclusionsSilent cerebral ischemic lesions detected in MRI are frequent in the population of patients with non-valvular AF. The incidence of SCILs is higher in patients with long history of arrhythmia and higher CHA₂DS₂-VASc score. The relationship between the anatomy of pulmonary veins and the incidence of SCILs needs further investigation.
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