title: Atrial diagnostics in a tiered therapy implantable defibrillator.
abstract: Dual chamber sensing has been proposed in implantable defibrillators as an additional diagnostic modality for enhanced differentiation of ventricular and supraventricular tachycardias. A patient with different rates of wide QRS complex tachycardias is described in whom a tiered therapy implantable defibrillator with atrial sensing capability was implanted. Atrial diagnostic data in this patient enabled definitive diagnosis of his ventricular tachycardias and guided management decisions of his arrhythmia.
authors.affiliation: Department of Medicine, University of British Columbia, St Paul's Hospital, Vancouver.
authors.forename: C
authors.initials: C
authors.lastname: Tang
authors.forename: M
authors.initials: M
authors.lastname: Schwartz
authors.forename: J A
authors.initials: JA
authors.lastname: Yeung-Lai-Wah
mesh_terms: D017147:Defibrillators, Implantable; D003937:Diagnosis, Differential; D004562:Electrocardiography; D006325:Heart Atria / Q000503:physiopathology; D006801:Humans; D008875:Middle Aged; D017202:Myocardial Ischemia / Q000175:diagnosis* / Q000628:therapy; D013617:Tachycardia, Supraventricular / Q000175:diagnosis; D017180:Tachycardia, Ventricular / Q000175:diagnosis