One-to-two atrioventricular conduction in Wolff-Parkinson-White syndrome: a mechanism of initiating supraventricular tachycardia.
A patient with Wolff-Parkinson-White syndrome and recurrent supraventricular tachycardia manifested the unusual finding of two ventricular responses to a single atrial depolarization. The second response occurred due to delay in the His-Purkinje system (H-V prolongation). This phenomenon was a mechanism of initiation of supraventricular tachycardia, not previously described to our knowledge.
D000328:Adult; D002304:Cardiac Pacing, Artificial / Q000379:methods*; D004562:Electrocardiography; D006325:Heart Atria / Q000503:physiopathology; D006329:Heart Conduction System / Q000503:physiopathology*; D006352:Heart Ventricles / Q000503:physiopathology*; D006801:Humans; D008297:Male; D013610:Tachycardia / Q000503:physiopathology*; D014927:Wolff-Parkinson-White Syndrome / Q000503:physiopathology*