Atrioventricular block after reciprocating atrioventricular junctional tachycardia

Juan M. Aranda, Federico Moleiro, Agustin Castellanos, Benjamin Befeler

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1 Scopus citations


Short runs of symptomatic atrioventricular (A-V) block occurred after spontaneous cessation of reciprocating A-V Junctional tachycardia in a patient with right bundle branch block, normal H-V interval and sinus nodal dysfunction. These episodes were characterized by long (more than 1 sec) P-P intervals during which the A deflections were not followed by His bundle electrograms. Three possible explanations are: (1) a posttachycardia-induced period of abnormally prolonged A-V nodal refractoriness; (2) pseudo-A-V block produced by concealed A-V Junctional tachycardia, or (3) bradycardia-dependent (phase 4) A-V block at the "upper" His bundle, above the site from which the H deflection was recorded.

Original languageEnglish (US)
Pages (from-to)807-809
Number of pages3
JournalThe American Journal of Cardiology
Issue number6
StatePublished - Nov 1975

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine


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