Reentry tachycardia with complete atrioventricular dissociation probably connected with the right Mahaïm bundle
Saulnier, J.P.; Nouviaire, R.; Aliot, E.; Mariot, J.; Celotto, W.; Gilgenkrantz, J.M.
Archives des Maladies du Coeur et des Vaisseaux 72(11): 1259-1266
1979
ISSN/ISBN: 0003-9683 PMID: 121531 Document Number: 143296
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.