[Analysis of the Luciani-Wenckebach phenomenon in the A-V node. II. Relationship between conduction and recovery times].
We have studied 20 cases Wenckebach A-V block by atrial pacing. The relationships between conduction time and recovery time of N. AV Wenckebach point, basal A-H time and A-H time of first cycle beat were analysed. No correlation was found between W point, basal A-H and A-H of the first beat by analysing the A-H = f (H-A) we found different curves which occur when the first A-H is longer or shorter than 110. These data were discussed on the basis of modern hypotheses of electrophysiological mechanism of Wenckebach periodism.
D004562:Electrocardiography; D006327:Heart Block / Q000503:physiopathology*; D006329:Heart Conduction System / Q000503:physiopathology; D006801:Humans
Analisi del fenomeno di Luciani-Wenckebach nel nodo A-V. II. Rapporto tra tempi di conduzione e recupero.