[Transient total atrioventricular dissociation induced by junctional premature depolarization]

The authors describe a case of temporary complete atrioventricular dissociation in prognostically less serious conduction disorders in the area of the atrioventricular node manifested clinically as an atrioventricular block grade 1. Dissociation episodes were induced by premature junctional depolarization and maintained, thanks to retrograde latent conduction into the area of the atrioventricular junction and the small difference of frequencies of the sinus and ectopic substitution rhythm.