Why the study?
Does pulmonary vein isolation or ganglionic plexus ablation reduce AF vulnerability and duration in canine models of CHF and ATR?
Population
28 dogs with experimental atrial fibrillation models: ventricular tachypacing-induced congestive heart…
Comparison
Pulmonary vein isolation using an epicardial… vs Comparison between PVI and GPA, and against…
Design
Preclinical
Key result
Peri-PV ganglionic plexus ablation significantly decreased AF vulnerability (75% to 30%, P<0.05) and AF duration in atrial tachycardia remodeling canine models, whereas pulmonary vein isolation had limited effects.
Authors
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Peri-PV ganglia ablation may reduce AF in canine ATR; leaves open translation to human AF or CHF models.
Does pulmonary vein isolation or ganglionic plexus ablation reduce AF vulnerability and duration in canine models of CHF and ATR?
Absolute Event Rate: 30% vs 75%
p-value: p=<0.05
Autonomic ganglia play a crucial role in atrial fibrillation related to atrial tachycardia remodeling, suggesting differential neural remodeling dictates the efficacy of ganglionic plexus ablation across different AF substrates.
Nishida et al. (2010) studied Atrial fibrillation (canine models) (n=28). Pulmonary vein isolation (PVI) or peri-PV ganglionic plexus ablation (GPA) vs. Baseline/Control was evaluated on AF vulnerability in ATR dogs undergoing GPA (p=<0.05). Peri-PV ganglionic plexus ablation significantly decreased AF vulnerability (75% to 30%, P<0.05) and AF duration in atrial tachycardia remodeling canine models, whereas pulmonary vein isolation had limited effects.
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