['Uninterrupted' anterograde atrioventricular excitation conduction in patients with paroxysmal reciprocal atrioventricular nodal tachycardias].

Different variants of anterograde atrioventricular conduction of excitation were distinguished basing on data obtained from 150 patients with paroxysmal reciprocal atrioventricular nodal tachycardias. Excitation conduction during programmed and accelerating atrial transesophageal pacing allowed to assess characteristics of excitation conduction along fast and slow conduction pathways in atrioventricular node. Some parameters were suggested that allowed to predict possibility of detection of different variants of anterograde atrioventricular conduction of excitation. Electrophysiological mechanisms of detection of various types of atrioventricular conduction curves are discussed.