title: Radiofrequency catheter ablation of upper septal idiopathic left ventricular tachycardia exhibiting left bundle branch block morphology.
abstract: Idiopathic left ventricular (LV) tachycardia usually exhibits right bundle branch block morphology. There are only a few sporadic cases that exhibit left bundle branch block (LBBB) morphology. We report a patient whose QRS complex during ventricular tachycardia (VT) was relatively narrow (100 msec) and exhibited LBBB (precordial R wave transition between V3 and V4) and a normal frontal plane axis. This VT was ablated successfully by radiofrequency current applied to the LV upper septum, where the earliest endocardial activation was recorded.
authors.affiliation: First Department of Internal Medicine, Kyushu University School of Medicine, Fukuoka, Japan. eimei@med.kyushu-u.ac.jp
authors.forename: E
authors.initials: E
authors.lastname: Shimoike
authors.forename: N
authors.initials: N
authors.lastname: Ueda
authors.forename: T
authors.initials: T
authors.lastname: Maruyama
authors.forename: Y
authors.initials: Y
authors.lastname: Kaji
mesh_terms: D000293:Adolescent; D002037:Bundle-Branch Block / Q000503:physiopathology*; D017115:Catheter Ablation; D004562:Electrocardiography; D005260:Female; D005471:Fluoroscopy; D006346:Heart Septum / Q000503:physiopathology* / Q000601:surgery; D006352:Heart Ventricles / Q000601:surgery; D006801:Humans; D017180:Tachycardia, Ventricular / Q000000981:diagnostic imaging / Q000503:physiopathology* / Q000601:surgery*; D016277:Ventricular Function, Left