Isoproterenol facilitation of slow pathway ablation in incessant dual atrioventricular nodal nonreentrant tachycardia.
Catheter ablation of the slow atrioventricular (AV) nodal pathway is the treatment of choice for dual AV nodal nonreentrant tachycardia. Rapid ventricular rates during incessant tachycardia may compromise catheter stability and increase the risk of AV block. Conduction via the slow AV nodal pathway may mimic junctional beats with retrograde block, which is an indicator to cease ablation. We report a case of incessant dual AV nodal nonreentrant tachycardia where intravenous isoproterenol was instrumental in facilitating catheter ablation by eliminating these two factors.
Cardiovascular Institute, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania 15213, USA. wangnc@upmc.edu
Norman C
NC
Wang
Eathar A
EA
Razak
Sandeep K
SK
Jain
Samir
S
Saba
D000328:Adult; D002316:Cardiotonic Agents / Q000008:administration & dosage; D017115:Catheter Ablation / Q000379:methods*; D002908:Chronic Disease; D003131:Combined Modality Therapy; D004562:Electrocardiography / Q000187:drug effects*; D006801:Humans; D007545:Isoproterenol / Q000008:administration & dosage*; D008297:Male; D019990:Perioperative Care / Q000379:methods; D013611:Tachycardia, Atrioventricular Nodal Reentry / Q000175:diagnosis* / Q000628:therapy*; D016896:Treatment Outcome
D002316:Cardiotonic Agents; D007545:Isoproterenol