Paradoxical preexcitation during cryoablation of a concealed parahisian accessory pathway. Issue 10 (27th August 2018)

• Record Type: Journal Article
• Authors: Akerström, Finn; Puchol, Alberto; Pachón, Marta; Martín‐Sierra, Cristina; Rodíguez‐Padial, Luis; Arias, Miguel A.
• Is Part Of: Pacing and clinical electrophysiology. Volume 41:Issue 10(2018)
• Page Start: 1362
• Page End: 1364
• Publication Date: 2018-08-27
• Subjects: accessory pathway -- cryoablation -- paradoxical preexcitation; Cardiac pacing -- Periodicals; Electrophysiology -- Periodicals; 617.4120645
• DOI: 10.1111/pace.13470
• Languages: English
• ISSNs: 0147-8389

Abstract

Abstract: A 16‐year‐old male presented with an orthodromic atrioventricular reentrant tachycardia over a concealed parahisian accessory pathway (AP). Cryoablation of the AP resulted in transient manifestation of a fully preexcited sinus rhythm of parahisian AP morphology. Potential causes for the paradoxical preexcitation include inadvertent atrioventricular nodal block, sourse‐sink mismatch, as well as the activation of a dormant AP capable of anterograde conduction.