title: Successful radiofrequency catheter ablation of incessant ventricular tachycardia with a delta wave-like beginning of the QRS complex.
abstract: Ventricular tachycardia with a delta wave-like beginning of the QRS complex is considered to be refractory to endocardial catheter ablation because it originates from the epicardial region. A 45-year-old woman had incessant ventricular tachycardia with a delta wave-like beginning of the QRS complex which was resistant to several antiarrhythmic drugs. The origin of the arrhythmia was at the mitral annulus on the antero-lateral left ventricular wall. The earliest endocardial activation preceded the QRS complex by 18 msec. After 7 sec of endocardial radiofrequency application ventricular tachycardia was terminated. During a 2 year follow-up ventricular tachycardia did not recur and only small numbers of premature ventricular contractions (< 100/day) were noted. VT with delta wave-like QRS morphology which originates from the basal region of the ventricle may be treated successfully with radiofrequency catheter ablation using an endocardial approach.
authors.affiliation: Second Department of Internal Medicine, Toyama Medical and Pharmaceutical University, Japan.
authors.forename: H
authors.initials: H
authors.lastname: Nagasawa
authors.forename: A
authors.initials: A
authors.lastname: Fujiki
authors.forename: M
authors.initials: M
authors.lastname: Usui
authors.forename: K
authors.initials: K
authors.lastname: Mizumaki
authors.forename: H
authors.initials: H
authors.lastname: Hayashi
authors.forename: H
authors.initials: H
authors.lastname: Inoue
mesh_terms: D017115:Catheter Ablation; D003700:Delta Rhythm; D004562:Electrocardiography; D005260:Female; D006801:Humans; D008875:Middle Aged; D017180:Tachycardia, Ventricular / Q000503:physiopathology / Q000601:surgery*; D014927:Wolff-Parkinson-White Syndrome / Q000503:physiopathology