Late Occurrence of Transient Advanced Second Degree Atrioventricular Block after Successful Transcatheter Cryoablation of Atrioventricular Nodal Reentry Tachycardia

Abstract

Late occurrence of atrioventricular nodal block is an extremely rare occurrence after radiofrequency catheter modification of the slow pathway and has yet to be reported after cryoablation. We report a case of late transient advanced second degree atrioventriuclar block after cryomodification of the slow pathway.

Delayed reversible atypical type I second degree atrio-ventricular block in a patient undergone slow pathway radiofrequency ablation: A case report and a short review of the literature

“…At present, there is lack of randomized trials or international multicentric studies showing solid data on therapeutic options in patients with RF related AV conduction disorders. There is though a bunch of case reports showing positive data on corticosteroids administrated for those patients with delayed CAVB [9] , [10] , [11] .…”