Key result
Slow pathway ablation may decrease fast pathway ERP via electrotonic interaction in marked PR prolongation.
Why the study?
Does ablation of the slow pathway improve fast pathway conduction in patients with symptomatic long PR interval due to dual AV nodal physiology?
Case Report
Does ablation of the slow pathway improve fast pathway conduction in patients with symptomatic long PR interval due to dual AV nodal physiology?
Slow pathway ablation may resolve symptomatic marked PR prolongation by removing the electrotonic impairment on the fast pathway.
Authors
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May inform ablation decisions in symptomatic long PR; leaves open prospective confirmation of electrotonic effects.
Laslett et al. (2020) conducted a case report in Symptomatic long PR interval with dual AV nodal physiology. Slow pathway ablation was evaluated. Ablation of the slow pathway may decrease the effective refractory period of the fast pathway due to an electrotonic interaction in patients with marked PR prolongation.
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