title: [Reentry tachycardia with complete atrioventricular dissociation probably connected with the right Mahaïm bundle].
abstract: A case of reentrant tachycardia with narrow and wide ventricular complexes without appearances of preexcitation is reported. Electrophysiological investigation showed complete retrograde atrioventricular block during tachycardia; left bundle branch block did not show the tachycardia rate. The reentry loop probably comprised: the His bundle, the right bundle branch, a right Mahaïm bundle and possibly a myocardial bridge. Possible intra-hisian reentry is discussed. The initiation of the tachycardia is analysed together with the possible consequences of permanent cardiac pacing.
mesh_terms: D002036:Bundle of His / Q000503:physiopathology; D006327:Heart Block / Q000150:complications*; D006801:Humans; D008297:Male; D008875:Middle Aged; D010138:Pacemaker, Artificial; D013610:Tachycardia / Q000503:physiopathology* / Q000628:therapy
vernacular_title: Tachycardie par réentrée avec dissociation auriculo-ventriculaire complète liée probablement à un faisceau de Mahaïm droit.