title: What is the mechanism of the change in QRS morphology during tachycardia?
authors.affiliation: Division of Cardiology, Hospital of the University of Pennsylvania, Philadelphia 19104, USA.
authors.forename: B B
authors.initials: BB
authors.lastname: Pavri
authors.forename: R S
authors.initials: RS
authors.lastname: Passman
authors.forename: D Z
authors.initials: DZ
authors.lastname: Kocovic
mesh_terms: D000328:Adult; D004562:Electrocardiography; D005260:Female; D006801:Humans; D013610:Tachycardia / Q000503:physiopathology*