Transient atrioventricular block shortly after uneventful cryoablation of atrioventricular nodal re-entrant tachycardias: report of two cases.
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.
González-Torrecilla
Esteban
E
Cardiology Department, Hospital General Universitario Gregorio Marañón, Calle Doctor Esquerdo 46, Madrid 28007, Spain. etorrecilla@telefonica.net
Arenal
Angel
A
Atienza
Felipe
F
Almendral
Jesús
J
D054537:Atrioventricular Block / Q000175:diagnosis* / Q000209:etiology*; D002309:Cardiology / Q000379:methods; D002648:Child; D003452:Cryosurgery / Q000379:methods*; D004562:Electrocardiography / Q000379:methods; D005260:Female; D006327:Heart Block; D006352:Heart Ventricles; D006801:Humans; D008297:Male; D013610:Tachycardia / Q000628:therapy; D013611:Tachycardia, Atrioventricular Nodal Reentry / Q000175:diagnosis* / Q000628:therapy; D016896:Treatment Outcome; D054088:Ventricular Septum / Q000473:pathology*