title: QT dispersion is a marker for life-threatening ventricular arrhythmias after atrioventricular nodal ablation using radiofrequency energy.
abstract: QT dispersion has been cited as a measure of nonuniform myocardial repolarization and a predictor of sudden cardiac death. We describe 38 patients who underwent atrioventricular nodal ablation, 3 of whom had an increase in measured QT dispersion and experienced potentially fatal, pulseless, polymorphic ventricular tachycardia after the procedure.
authors.affiliation: Department of Medicine, University of Florida, Gainesville 32610, USA.
authors.forename: J B
authors.initials: JB
authors.lastname: Conti
authors.forename: R M
authors.initials: RM
authors.lastname: Mills
authors.forename: D A
authors.initials: DA
authors.lastname: Woodard
authors.forename: A B
authors.initials: AB
authors.lastname: Curtis
mesh_terms: D002304:Cardiac Pacing, Artificial; D017115:Catheter Ablation; D003131:Combined Modality Therapy; D004562:Electrocardiography; D006801:Humans; D013617:Tachycardia, Supraventricular / Q000503:physiopathology / Q000628:therapy*