title: Intermittent wide QRS complexes during a supraventricular tachycardia: what is the mechanism?
authors.affiliation: Arrhythmia and Electrophysiology Unit, Biocor Instituto, Nova Lima, Minas Gerais, Brazil. eduardosternick@aol.com
authors.forename: Eduardo Back
authors.initials: EB
authors.lastname: Sternick
authors.forename: Luiz Márcio
authors.initials: LM
authors.lastname: Gerken
authors.forename: Ricardo B
authors.initials: RB
authors.lastname: Scarpelli
authors.forename: Hein J J
authors.initials: HJ
authors.lastname: Wellens
mesh_terms: D000328:Adult; D002037:Bundle-Branch Block / Q000175:diagnosis / Q000503:physiopathology; D004562:Electrocardiography; D022062:Electrophysiologic Techniques, Cardiac; D005260:Female; D006329:Heart Conduction System / Q000503:physiopathology*; D006801:Humans; D013617:Tachycardia, Supraventricular / Q000175:diagnosis / Q000503:physiopathology*