Key result
Transvenous cryoablation of parahissian accessory pathways was associated with transient dissociation between anterograde and retrograde conduction in two reported cases.
Why the study?
Does transvenous cryoablation cause dissociation between anterograde and retrograde conduction in patients with parahissian accessory pathways?
Case Report (n=2)
Does transvenous cryoablation cause dissociation between anterograde and retrograde conduction in patients with parahissian accessory pathways?
Transvenous cryoablation of parahissian accessory pathways can be associated with transient dissociation between anterograde and retrograde conduction.
Transient dissociation may occur during parahissian AP cryoablation; hypothesis-generating for conduction properties and needs confirmation.
Ablation of parahissian accessory pathways (APs) is a challenging procedure because of the high risk to provoke "iatrogenic" atrioventricular (AV) nodal block. The feasibility and safety of cryoablation (CA) have been already demonstrated both in patients with AV nodal reentry tachycardia and in those with anteroseptal APs. However, dissociation between anterograde and retrograde conduction after CA has not yet been described. We report two cases of CA of parahissian AP associated with transient dissociation between anterograde and retrograde conduction.
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Sorgente et al. (2010) conducted a case report in Parahissian accessory pathways (n=2). Transvenous cryoablation was evaluated on Dissociation between anterograde and retrograde conduction. Transvenous cryoablation of parahissian accessory pathways was associated with transient dissociation between anterograde and retrograde conduction in two reported cases.
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