title: [Junctional reciprocating tachycardia with second degree A-V block (author's transl)].
abstract: Two cases of paroxysmal supraventricular tachycardia sustained by an atrioventricular junctional reentry mechanism are presented. During the electrophysiological study it was possible to induce paroxysms of tachycardia showing 3:2 Lucianai-Wenckebach type and 2:1 atrioventricular block. The site of the block, its functional nature and the possible involvement of an anterogradely blocked atrio-nodal or atrio-His accessory pathway in the reentry circuit are discussed.
mesh_terms: D000293:Adolescent; D000328:Adult; D004562:Electrocardiography; D005260:Female; D006327:Heart Block / Q000175:diagnosis / Q000209:etiology*; D006801:Humans; D008297:Male; D013614:Tachycardia, Paroxysmal / Q000150:complications*
vernacular_title: Tachicardia reciprocante giunzionale con blocco A-V di secondo grado