Recurrent A V block following ablation for AVNRT

Fnu Shailesh; Asif Sewani; Hakan Paydak

doi:10.1016/j.ihj.2014.10.410

Recurrent A V block following ablation for AVNRT

Indian Heart J. 2014 Nov-Dec;66(6):710-3. doi: 10.1016/j.ihj.2014.10.410. Epub 2014 Oct 30.

Authors

Fnu Shailesh¹, Asif Sewani², Hakan Paydak²

Affiliations

¹ Department of Cardiovascular Medicine, University of Arkansas for Medical Sciences, 4301, W Markham St, # 634, Little Rock, AR 72205-7199, USA. Electronic address: [email protected].
² Department of Cardiovascular Medicine, University of Arkansas for Medical Sciences, 4301, W Markham St, # 634, Little Rock, AR 72205-7199, USA.

Abstract

Slow pathway modification has become the mainstay for the treatment of atrio-ventricular nodal re-entrant tachycardia (AVNRT) ablation because of high success rate and low incidence of complications. Our patient had a rare complication of slow pathway modification by radiofrequency ablation (RFA) in form of delayed complete heart block, occurring 10 days after the procedure and resolving in 6 weeks to normal conduction. Complete AV block is a rare immediate complication of RFA but can present weeks later. Transient atrio-ventricular (AV) block during the procedure is seen in all patients who develop delayed AV block and these patients should be monitored closely.

Keywords: Atrio-ventricular nodal re-entrant tachycardia (AVNRT); Electrocardiogram (ECG); Heart block; Radiofrequency ablation (RFA); Slow pathway (SP).