title: Unique self-perpetuating cycle of atrioventricular block and phase IV bundle branch block in a patient with bundle branch reentrant tachycardia.
abstract: Bundle branch reentrant tachycardia (BBRT) is an uncommon form of ventricular tachycardia involving diseased bundle branches. Phase IV bundle branch block also accompanies severe His-Purkinje disease. We present an unusual case of BBRT in a patient who also manifests a unique self-perpetuating cycle of AV block and phase IV left bundle branch block following aortic valve surgery. BBRT was treated successfully by ablation of the right bundle.
authors.affiliation: Department of Medicine, Division of Cardiovascular Medicine, Thomas Jefferson University Hospital, Philadelphia, Pennsylvania, USA.
authors.forename: Brian
authors.initials: B
authors.lastname: Fedgchin
authors.forename: Behzad B
authors.initials: BB
authors.lastname: Pavri
authors.forename: Arnold J
authors.initials: AJ
authors.lastname: Greenspon
authors.forename: Reginald T
authors.initials: RT
authors.lastname: Ho
mesh_terms: D002037:Bundle-Branch Block / Q000175:diagnosis / Q000503:physiopathology* / Q000628:therapy*; D017115:Catheter Ablation; D001026:Coronary Artery Bypass / Q000009:adverse effects*; D004599:Electric Stimulation Therapy; D022062:Electrophysiologic Techniques, Cardiac; D019918:Heart Valve Prosthesis Implantation / Q000009:adverse effects*; D006801:Humans; D008297:Male; D008875:Middle Aged; D013611:Tachycardia, Atrioventricular Nodal Reentry / Q000175:diagnosis / Q000503:physiopathology* / Q000628:therapy*