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

doi:10.1007/s10840-008-9279-1

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

IRCCS Policlinico San Donato

Research output: Contribution to journal › Article › peer-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 language	English
Pages (from-to)	153-157
Number of pages	5
Journal	Journal of Interventional Cardiac Electrophysiology
Volume	23
Issue number	2
DOIs	https://doi.org/10.1007/s10840-008-9279-1
Publication status	Published - 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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AU - Francia, P.

AU - Pittalis, M. C.

AU - Ali, H.

AU - Cappato, R.

PY - 2008/11

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AB - 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.

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KW - Mitral annulus-aorta junction

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