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• W3044171940 endingPage "102699" @default.
• W3044171940 startingPage "102699" @default.
• W3044171940 abstract "Epicardial ganglionated plexuses (GP) have an important role in the pathogenesis of atrial fibrillation (AF). The relationship between anatomical, histological and functional effects of GP is not well known. We previously described atrioventricular (AV) dissociating GP (AVD-GP) locations. In this study, we hypothesised that ectopy triggering GP (ET-GP) are upstream triggers of atrial ectopy/AF and have different anatomical distribution to AVD-GP.We mapped and characterised ET-GP to understand their neural mechanism in AF and anatomical distribution in the left atrium (LA).26 patients with paroxysmal AF were recruited. All were paced in the LA with an ablation catheter. High frequency stimulation (HFS) was synchronised to each paced stimulus for delivery within the local atrial refractory period. HFS responses were tagged onto CARTO™ 3D LA geometry. All geometries were transformed onto one reference LA shell. A probability distribution atlas of ET-GP was created. This identified high/low ET-GP probability regions.2302 sites were tested with HFS, identifying 579 (25%) ET-GP. 464 ET-GP were characterised, where 74 (16%) triggered ≥30s AF/AT. Median 97 (IQR 55) sites were tested, identifying 19 (20%) ET-GP per patient. >30% of ET-GP were in the roof, mid-anterior wall, around all PV ostia except in the right inferior PV (RIPV) in the posterior wall.ET-GP can be identified by endocardial stimulation and their anatomical distribution, in contrast to AVD-GP, would be more likely to be affected by wide antral circumferential ablation. This may contribute to AF ablation outcomes." @default.
• W3044171940 created "2020-07-29" @default.
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• W3044171940 date "2020-11-01" @default.
• W3044171940 modified "2023-10-16" @default.
• W3044171940 title "The ectopy-triggering ganglionated plexuses in atrial fibrillation" @default.
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• W3044171940 doi "https://doi.org/10.1016/j.autneu.2020.102699" @default.
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