title: Shift of exit site during ablation of ventricular tachycardia originating from the vicinity of left ventricular summit.
abstract: A 44-year-old man with structurally normal heart underwent catheter ablation of left ventricular summit tachycardia. The initial mapping revealed the origin of tachycardia at the junction of great cardiac vein and anterior interventricular vein. During ablation the exit site shifted to the nearby regions, which was recognized by subtle changes of 12-lead ECG. Mapping and ablating at different exit sites rendered the tachycardia noninducible.
authors.affiliation: Division of Cardiology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan.
authors.forename: Van Buu
authors.initials: VB
authors.lastname: Dan Do
authors.forename: Shih-Lin
authors.initials: SL
authors.lastname: Chang
authors.forename: Yenn-Jiang
authors.initials: YJ
authors.lastname: Lin
authors.forename: Shih-Ann
authors.initials: SA
authors.lastname: Chen
mesh_terms: D000328:Adult; D017115:Catheter Ablation; D004562:Electrocardiography; D022062:Electrophysiologic Techniques, Cardiac; D006352:Heart Ventricles / Q000503:physiopathology / Q000601:surgery*; D006801:Humans; D008297:Male; D011237:Predictive Value of Tests; D017180:Tachycardia, Ventricular / Q000175:diagnosis / Q000503:physiopathology / Q000601:surgery*; D016896:Treatment Outcome; D016277:Ventricular Function, Left; D018879:Ventricular Premature Complexes / Q000175:diagnosis / Q000503:physiopathology / Q000601:surgery*
keywords: catheter ablation; exit shift; left ventricular summit; premature ventricular complexes; ventricular tachycardia