title: Changes in the Reentrant Pathway in Verapamil-Sensitive Fascicular Reentrant Ventricular Tachycardia During Ablation.
abstract: The sequence of changes in the QRS morphology and the accompanying cycle lengths of the tachycardia confirm that the reentrant circuit involves the left ventricular myocardium as well as the His Purkinje system as part of the reentrant circuit. The reentrant propagation likely goes from local left ventricular myocardium into a slowly conducting, verapamil-sensitive tissue, which then connects into the inferior fascicle. This case demonstrates that fascicular reentrant tachycardias can generate different QRS morphologies depending on the path of breakout into the myocardium.
authors.affiliation: Department of Cardiovascular Medicine, Cleveland Clinic Main Campus, Mail Code J2-2, 9500 Euclid Avenue, Cleveland, OH 44195, USA. Electronic address: TCHOUP@ccf.org.
authors.forename: Patrick
authors.initials: P
authors.lastname: Tchou
authors.affiliation: Department of Cardiovascular Medicine, Cleveland Clinic Main Campus, Mail Code J2-2, 9500 Euclid Avenue, Cleveland, OH 44195, USA.
authors.forename: Khaldoun
authors.initials: K
authors.lastname: Tarakji
authors.affiliation: Department of Cardiovascular Medicine, Cleveland Clinic Main Campus, Mail Code J2-2, 9500 Euclid Avenue, Cleveland, OH 44195, USA.
authors.forename: Mohamed
authors.initials: M
authors.lastname: Kanj
mesh_terms: D000889:Anti-Arrhythmia Agents / Q000627:therapeutic use*; D017115:Catheter Ablation; D004562:Electrocardiography; D005260:Female; D006801:Humans; D008875:Middle Aged; D017180:Tachycardia, Ventricular / Q000188:drug therapy / Q000503:physiopathology / Q000601:surgery; D014700:Verapamil / Q000627:therapeutic use*
chemical_list: D000889:Anti-Arrhythmia Agents; D014700:Verapamil
keywords: Ablation; Case study; Fascicular activation patterns; Reentrant ventricular tachycardia; Verapamil