title: Progressive widening of the QRS complex during tachycardia: what are the underlying rhythms?
authors.affiliation: Arrhythmia Unit, Biocor Instituto, Belo Horizonte, Brazil. eduardosternick@terra.com.br
authors.forename: Eduardo B
authors.initials: EB
authors.lastname: Sternick
authors.forename: Luiz
authors.initials: L
authors.lastname: Gerken
authors.forename: Frederico S
authors.initials: FS
authors.lastname: Correa
authors.forename: Hein J
authors.initials: HJ
authors.lastname: Wellens
mesh_terms: D000200:Action Potentials; D000889:Anti-Arrhythmia Agents / Q000627:therapeutic use; D018880:Atrial Premature Complexes / Q000175:diagnosis / Q000503:physiopathology* / Q000628:therapy; D002304:Cardiac Pacing, Artificial; D017115:Catheter Ablation; D004351:Drug Resistance; D004562:Electrocardiography; D022062:Electrophysiologic Techniques, Cardiac; D006801:Humans; D008297:Male; D013611:Tachycardia, Atrioventricular Nodal Reentry / Q000175:diagnosis / Q000503:physiopathology* / Q000628:therapy; D017180:Tachycardia, Ventricular / Q000175:diagnosis / Q000503:physiopathology* / Q000628:therapy; D013997:Time Factors; D055815:Young Adult
chemical_list: D000889:Anti-Arrhythmia Agents