title: QRS alternans during tachycardia.
authors.affiliation: Department of Medicine, Hospital of the University of Pennsylvania, Philadelphia 19104, USA.
authors.forename: B B
authors.initials: BB
authors.lastname: Pavri
authors.forename: E M
authors.initials: EM
authors.lastname: Grubman
authors.forename: D Z
authors.initials: DZ
authors.lastname: Kocovic
mesh_terms: D000328:Adult; D002037:Bundle-Branch Block / Q000175:diagnosis / Q000503:physiopathology; D004562:Electrocardiography; D006801:Humans; D008297:Male; D013610:Tachycardia / Q000175:diagnosis / Q000503:physiopathology*