ABLATION
Transient atrioventricular block shortly after uneventful cryoablation of atrioventricular nodal re-entrant tachycardias: report of two cases
Cardiology Department, Hospital General Universitario Gregorio Marañón, Calle Doctor Esquerdo 46, Madrid 28007, Spain
We report two patients with atrioventricular (AV) nodal re-entrant tachycardias who developed transient AV block immediately after uneventful cryoablation of the slow pathway was completed. No tachycardia recurrences were observed after an asymptomatic follow-up of 12 months and 10 months, respectively. This is the first report of this unexpected, transient phenomenon. The exact mechanism(s) remain(s) unclear.
Key Words: Ablation, Cryoablation, atrioventricular block
* Corresponding author. Tel: +34 91 586 8276; fax: +34 91 586 8290. E-mail address: etorrecilla{at}telefonica.net
Manuscript submitted 14 December 2006. Accepted after revision 7 June 2007.
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