title: Improvement of atrioventricular conduction following catheter ablation of atrioventricular nodal reentry tachycardia in a patient with a prolonged PR interval.
abstract: We herein present the case of a 60-year-old male with narrow QRS tachycardia who had a remarkable PR prolongation during sinus rhythm. The tachycardia was diagnosed as a slow-fast atrioventricular nodal reentry tachycardia. Slow pathway ablation was performed after the confirmation of the presence of an antegrade fast pathway. Following the elimination of the slow pathway, the PR and atrio-His intervals became shortened from 470 and 420 to 170 and 120 ms, respectively. Moreover, the improvement of atrioventricular conduction after the slow pathway ablation lasted for at least 34 months.
authors.affiliation: Department of Cardiology, The Jikei University of Medicine, 3-25-8 Nishi-shinbashi, Minato-ku, Tokyo, Japan.
authors.forename: Seigo
authors.initials: S
authors.lastname: Yamashita
authors.forename: Teiichi
authors.initials: T
authors.lastname: Yamane
authors.forename: Seiichiro
authors.initials: S
authors.lastname: Matsuo
authors.forename: Keiichi
authors.initials: K
authors.lastname: Ito
authors.forename: Ryohsuke
authors.initials: R
authors.lastname: Narui
authors.forename: Mika
authors.initials: M
authors.lastname: Hioki
authors.forename: Shin-ichi
authors.initials: S
authors.lastname: Tanigawa
authors.forename: Michifumi
authors.initials: M
authors.lastname: Tokuda
authors.forename: Keiichi
authors.initials: K
authors.lastname: Inada
authors.forename: Taro
authors.initials: T
authors.lastname: Date
authors.forename: Ken-ichi
authors.initials: K
authors.lastname: Sugimoto
authors.forename: Michihiro
authors.initials: M
authors.lastname: Yoshimura
mesh_terms: D002036:Bundle of His / Q000503:physiopathology* / Q000601:surgery; D017115:Catheter Ablation; D004562:Electrocardiography; D006339:Heart Rate / Q000502:physiology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D013611:Tachycardia, Atrioventricular Nodal Reentry / Q000175:diagnosis / Q000503:physiopathology / Q000601:surgery*