title: Supraventricular tachycardia and sinus rhythm with contralateral bundle branch block patterns.
abstract: A contralateral bundle branch block (BBB) aberration during tachycardia with a preexisting BBB strongly suggests the presence of ventricular tachycardia. We report on a middle-aged, female patient presented with wide QRS tachycardia. The patient had orthodromic atrioventricular tachycardia with a left BBB aberration in the presence of a preexisting right BBB due to an abnormal His-Purkinje system. We learned that the contralateral BBB aberration with supraventricular tachycardia could be seen when the His-Purkinje system was abnormal.
authors.affiliation: Krannert Institute of Cardiology, Indiana University School of Medicine, Indianapolis, IN, USA.
authors.forename: Seongwook
authors.initials: S
authors.lastname: Han
authors.affiliation: Krannert Institute of Cardiology, Indiana University School of Medicine, Indianapolis, IN, USA.
authors.forename: John M
authors.initials: JM
authors.lastname: Miller
authors.affiliation: Krannert Institute of Cardiology, Indiana University School of Medicine, Indianapolis, IN, USA.
authors.forename: Mithilesh Kumar
authors.initials: MK
authors.lastname: Das
keywords: Bundle of His; Bundle-branch block; Purkinje fibers; Tachycardia, supraventricular
references.citation: Br Heart J. 1972 Aug;34(8):807-14
references.pmid: 5070112