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.
Bogun
Frank
F
Division of Cardiology, University of Michigan Health System, Ann Arbor, MI 48109, USA.
Krishnan
Subramaniam C
SC
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*