QT dispersion is a marker for life-threatening ventricular arrhythmias after atrioventricular nodal ablation using radiofrequency energy.
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.
Conti
J B
JB
Department of Medicine, University of Florida, Gainesville 32610, USA.
Mills
R M
RM
Woodard
D A
DA
Curtis
A B
AB
D002304:Cardiac Pacing, Artificial; D017115:Catheter Ablation; D003131:Combined Modality Therapy; D004562:Electrocardiography; D006801:Humans; D013617:Tachycardia, Supraventricular / Q000503:physiopathology / Q000628:therapy*