Double ventricular responses during extrastimulation of atrioventricular nodal reentrant tachycardia

In patients with dual atrioventricular (AV) nodal pathways, double ventricular responses to a single atrial depolarization have been shown to occur, but virtually only during atrial pacing in sinus rhythm. We report on a patient with a slow-fast form of AV nodal reentrant tachycardia who exhibited d...

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Bibliographic Details
Published inEuropean heart journal Vol. 15; no. 2; p. 285
Main Authors Suzuki, F, Tanaka, K, Ishihara, N, Hirao, K, Kawara, T, Hiejima, K
Format Journal Article
LanguageEnglish
Published England 01.02.1994
Subjects
Atrioventricular Node - physiopathology
Bundle of His - physiopathology
Cardiac Pacing, Artificial
Electrocardiography
Female
Heart Ventricles - physiopathology
Humans
Middle Aged
Signal Processing, Computer-Assisted
Tachycardia, Atrioventricular Nodal Reentry - physiopathology
Tachycardia, Atrioventricular Nodal Reentry - therapy
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Summary:In patients with dual atrioventricular (AV) nodal pathways, double ventricular responses to a single atrial depolarization have been shown to occur, but virtually only during atrial pacing in sinus rhythm. We report on a patient with a slow-fast form of AV nodal reentrant tachycardia who exhibited double ventricular responses following extrastimulation during AV nodal reentrant tachycardia. The phenomenon of double ventricular responses during the tachycardia was demonstrated by extrastimulation from the proximal coronary sinus. Retrograde unidirectional block in the slow pathway, and an anterograde effective refractory period that was shorter in the fast pathway than that in the slow pathway, are suggested.
ISSN:0195-668X
1522-9645
DOI:10.1093/oxfordjournals.eurheartj.a060490