A His bundle extrasystole can both induce and reverse 2:1 atrioventricular block

Abdullah Khan, Abdul Ameen, Ilir Maraj, Gioia Turitto, Nabil E. El-Sherif

Research output: Contribution to journalArticle

4 Scopus citations

Abstract

An 84 year-old man with history of recurrent dizziness presented with first degree atrio-ventricular block (1° AVB) and periods of 2:1 AVB. An electrophysiological study revealed a predominant 1:1 AV conduction with markedly prolonged AH interval and frequent His bundle extrasystoles (H). A properly timed H could induce periods of 2:1 AV nodal block and 1:1 AV conduction could only resume following another properly timed H. Procainamide suppressed H. However, because of persistence of the patient symptoms, a permanent pacemaker was eventually inserted. The case illustrates a hitherto not described manifestation of H.

Original languageEnglish (US)
Pages (from-to)121-123
Number of pages3
JournalJournal of Interventional Cardiac Electrophysiology
Volume32
Issue number2
DOIs
StatePublished - Nov 1 2011

All Science Journal Classification (ASJC) codes

  • Cardiology and Cardiovascular Medicine
  • Physiology (medical)

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