title: Effect of intraatrial reentry on initiation of atrioventricular reentrant tachycardia.
abstract: We studied the effect of intraatrial reentry (IAR) on initiation of orthodromic reentrant tachycardia (ORT) in 150 patients with Wolff-Parkinson-White syndrome using His-bundle recording and the atrial extrastimulus technique. IAR was initiated by premature atrial stimulation in 44 patients (29%), and it was followed by ORT in 16 patients (11%). In 8 patients (5%), IAR promoted the initiation of ORT, whereas in 5 patients (3%), IAR inhibited the initiation of ORT. These findings suggest that ORT is frequently induced following IAR. IAR, which was frequently observed during electrophysiological studies, seems to play an important role in the initiation of ORT.
authors.affiliation: Department of Cardiology, Sendai City Hospital, Japan.
authors.forename: H
authors.initials: H
authors.lastname: Odakura
authors.forename: M
authors.initials: M
authors.lastname: Ito
authors.forename: A
authors.initials: A
authors.lastname: Namekawa
authors.forename: T
authors.initials: T
authors.lastname: Yagi
authors.forename: K
authors.initials: K
authors.lastname: Ogata
authors.forename: J
authors.initials: J
authors.lastname: Otomo
authors.forename: A
authors.initials: A
authors.lastname: Ishida
mesh_terms: D000328:Adult; D006328:Cardiac Catheterization; D002304:Cardiac Pacing, Artificial; D004562:Electrocardiography; D004594:Electrophysiology; D005260:Female; D006329:Heart Conduction System / Q000503:physiopathology*; D006801:Humans; D008297:Male; D013611:Tachycardia, Atrioventricular Nodal Reentry / Q000503:physiopathology*; D014927:Wolff-Parkinson-White Syndrome / Q000503:physiopathology*