title: Unusual variant of atrioventricular nodal reentrant tachycardia.
abstract: Electrophysiologic study in a patient with supraventricular tachycardia revealed an unusual activation pattern in the coronary sinus (CS) electrodes. Pacing maneuvers confirmed the tachycardia was a slow-slow AV nodal reentrant tachycardia with double potentials in the distal CS electrodes due to an earlier left atrial signal (50 ms) and later CS musculature activation. The left-sided AV nodal inputs were successfully ablated from within the CS.
authors.affiliation: Cardiac Electrophysiology, McGuire VA Medical Center, Medical College of Virginia, Richmond, 23249, USA. p.vijayaraman@med.va.gov
authors.forename: Pugazhendhi
authors.initials: P
authors.lastname: Vijayaraman
authors.forename: Lai Chow
authors.initials: LC
authors.lastname: Kok
authors.forename: Bunhi
authors.initials: B
authors.lastname: Rhee
authors.forename: Kenneth A
authors.initials: KA
authors.lastname: Ellenbogen
mesh_terms: D002304:Cardiac Pacing, Artificial; D017115:Catheter Ablation; D004562:Electrocardiography; D022062:Electrophysiologic Techniques, Cardiac; D006329:Heart Conduction System / Q000503:physiopathology; D006801:Humans; D008297:Male; D008875:Middle Aged; D013611:Tachycardia, Atrioventricular Nodal Reentry / Q000175:diagnosis / Q000503:physiopathology* / Q000601:surgery