[Atrioventricular conductive disorders as a consequence of activation of the intracardiac reflex apparatus]

Experiments were conducted on isolated and vagotomized frog hearts (Rana temporaria). It is suggested that certain forms of disturbances of the atrioventricular node, the Wolff--Parkinson--White syndrome and parasystole, result from activation of the atrioventricular reflex mechanisms.