Electrophysiological study and catheter ablation of a Mahaim fibre located at the mitral annulus-aorta junction

P. Francia, M. C. Pittalis, H. Ali, R. Cappato

Research output: Contribution to journalArticlepeer-review

Abstract

Accessory pathways with slow and anterograde decremental conduction (Mahaim fibres) are responsible for a minority of atrioventricular reentrant tachycardias. While usually located along the tricuspid annulus, left-sided Mahaim fibres have been occasionally reported. We here report on a unique case of radiofrequency catheter ablation of a Mahaim pathway located at the supero-septal aspect of the mitral annulus, in a region known as mitral annulus-aorta junction, between the right and left fibrous trigons. Electrophysiological properties and embryological implications of this unusual accessory pathway are discussed.

Original languageEnglish
Pages (from-to)153-157
Number of pages5
JournalJournal of Interventional Cardiac Electrophysiology
Volume23
Issue number2
DOIs
Publication statusPublished - Nov 2008

Keywords

  • Accessory pathway
  • Catheter ablation
  • Decremental conduction
  • Mahaim
  • Mitral annulus-aorta junction

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine
  • Physiology (medical)

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