title: [The incidence of concealed accessory atrioventricular pathways in paroxysmal junctional tachycardias].
abstract: Forty patients with normal resting ECGs and a history of paroxysmal junctional tachycardia underwent endocavitory electrocardiography. Accessory atrioventricular pathways were demonstrated in 34 patients (82.5%), 14 of whom (35%) had Kent bundles. The ventriculo-atrial conduction time during ventricular stimulation was constantin 85% of the 40 patients but increased after injection of striadyne (ATP). This may suggest a reentry circuit partially bypassing the atrioventricular node.
mesh_terms: D000255:Adenosine Triphosphate / Q000494:pharmacology; D000328:Adult; D000368:Aged; D001283:Atrioventricular Node / Q000503:physiopathology*; D004562:Electrocardiography; D005260:Female; D006329:Heart Conduction System / Q000503:physiopathology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D009431:Neural Conduction / Q000187:drug effects; D013614:Tachycardia, Paroxysmal / Q000503:physiopathology*; D013997:Time Factors
chemical_list: D000255:Adenosine Triphosphate
vernacular_title: La fréquence des faisceaux accessoires latents au cours des tachycardies jonctionnelles paroxystiques.