title: Characteristics of systolic and diastolic potentials recorded in the left interventricular septum in verapamil-sensitive left ventricular tachycardia.
abstract: We studied the electrophysiological characteristics of systolic (SP) and diastolic (DP) potentials recorded during sinus rhythm (SR) in the left interventricular septum of a 27 year-old woman presenting with verapamil-sensitive idiopathic left ventricular tachycardia (VT). During SR, and during VT, SP was activated from ventricular base-to-apex, and DP from apex-to-base. SP and DP were both detected at the site of successful ablation during SR, whereas during VT, DP was detected away from the earliest activation site. Thus, SP apparently reflected a critical component of the reentrant circuit, while DP reflected the activation of a bystander pathway.
authors: Department of Medicine and Biological Science, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan. kanekoy@gunma-u.ac.jp
authors: Yoshiaki
authors: Y
authors: Kaneko
authors: Tadashi
authors: T
authors: Nakajima
authors: Tadanobu
authors: T
authors: Irie
authors: Masaki
authors: M
authors: Ota
authors: Toshimitsu
authors: T
authors: Kato
authors: Takafumi
authors: T
authors: Iijima
authors: Mio
authors: M
authors: Tamura
authors: Hiroaki
authors: H
authors: Kobayashi
authors: Masahiko
authors: M
authors: Kurabayashi
mesh_terms: D000200:Action Potentials / Q000187:drug effects*; D000328:Adult; D000889:Anti-Arrhythmia Agents / Q000008:administration & dosage*; D024201:Bystander Effect; D017115:Catheter Ablation; D003971:Diastole / Q000187:drug effects; D022062:Electrophysiologic Techniques, Cardiac; D005260:Female; D006801:Humans; D007275:Injections, Intravenous; D015641:Radiography, Interventional; D013599:Systole / Q000187:drug effects; D017180:Tachycardia, Ventricular / Q000175:diagnosis / Q000188:drug therapy* / Q000503:physiopathology / Q000601:surgery; D013997:Time Factors; D016896:Treatment Outcome; D016277:Ventricular Function, Left / Q000187:drug effects*; D054088:Ventricular Septum / Q000187:drug effects* / Q000503:physiopathology / Q000601:surgery; D014700:Verapamil / Q000008:administration & dosage*
chemical_list: D000889:Anti-Arrhythmia Agents; D014700:Verapamil