Retrospective diagnosis of prolonged QT interval and Torsades de Pointes made by analysis of ICD electrograms.
We describe a case where a patient received multiple shocks from his implantable cardioverter defibrillator (ICD) for pause dependent polymorphic ventricular tachycardia. The stored far-field electrograms of the ICD were used to make the diagnosis of prolonged QT interval and Torsades de Pointes retrospectively.
Division of Cardiology, University of Michigan Health System, Ann Arbor, MI 48109, USA.
Frank
F
Bogun
Subramaniam C
SC
Krishnan
D000368:Aged; D000369:Aged, 80 and over; D017147:Defibrillators, Implantable; D004562:Electrocardiography; D022062:Electrophysiologic Techniques, Cardiac; D006801:Humans; D008133:Long QT Syndrome / Q000175:diagnosis*; D008297:Male; D012189:Retrospective Studies; D017180:Tachycardia, Ventricular / Q000628:therapy; D016171:Torsades de Pointes / Q000175:diagnosis*