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Ablation techniques for mahaim fiber tachycardia.

Bohora S, Tharakan J - Indian Pacing Electrophysiol J (2009)

Bottom Line: Mahaim fiber exhibits atrio-ventricular node like properties and generally is localized at the lateral aspect of the tricuspid annulus.Of the varying methods for localization, ablation at the site of Mahaim potential is the most accepted and successful method.Radiofrequency ablation of Mahaim fiber has high success rates.

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ABSTRACT
Mahaim fiber exhibits atrio-ventricular node like properties and generally is localized at the lateral aspect of the tricuspid annulus. Of the varying methods for localization, ablation at the site of Mahaim potential is the most accepted and successful method. Radiofrequency ablation of Mahaim fiber has high success rates.

No MeSH data available.


Mahaim fiber potential as marked with arrows in the RF Distal (RFD) channel shows a sharp potential similar to a His recording. (HBED)
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Figure 1: Mahaim fiber potential as marked with arrows in the RF Distal (RFD) channel shows a sharp potential similar to a His recording. (HBED)

Mentions: Mahaim (M) potentials (Figure 1) appear as discrete sharp potential lying between the atrial and ventricular electrograms recorded at the tricuspid annulus. The interval between the M potential and V always remains constant during atrial pacing at different cycle lengths. The potential may be as large as the His bundle potential or small and narrow with low amplitude. A Mahaim potential will be recorded only in very close proximity to the atrial insertion of the accessory pathway and, therefore, is likely to be a good predictor of a successful ablation site as described by various studies [7,11,15-18]. Several authors [11,14-18](11,14-18) have shown a success of 100% while McClelland et al [7] reported a success of 88% for ablations guided by M potentials. Recurrence has rarely been reported once successful ablation has been done by this method [18,20].


Ablation techniques for mahaim fiber tachycardia.

Bohora S, Tharakan J - Indian Pacing Electrophysiol J (2009)

Mahaim fiber potential as marked with arrows in the RF Distal (RFD) channel shows a sharp potential similar to a His recording. (HBED)
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC2655068&req=5

Figure 1: Mahaim fiber potential as marked with arrows in the RF Distal (RFD) channel shows a sharp potential similar to a His recording. (HBED)
Mentions: Mahaim (M) potentials (Figure 1) appear as discrete sharp potential lying between the atrial and ventricular electrograms recorded at the tricuspid annulus. The interval between the M potential and V always remains constant during atrial pacing at different cycle lengths. The potential may be as large as the His bundle potential or small and narrow with low amplitude. A Mahaim potential will be recorded only in very close proximity to the atrial insertion of the accessory pathway and, therefore, is likely to be a good predictor of a successful ablation site as described by various studies [7,11,15-18]. Several authors [11,14-18](11,14-18) have shown a success of 100% while McClelland et al [7] reported a success of 88% for ablations guided by M potentials. Recurrence has rarely been reported once successful ablation has been done by this method [18,20].

Bottom Line: Mahaim fiber exhibits atrio-ventricular node like properties and generally is localized at the lateral aspect of the tricuspid annulus.Of the varying methods for localization, ablation at the site of Mahaim potential is the most accepted and successful method.Radiofrequency ablation of Mahaim fiber has high success rates.

View Article: PubMed Central - PubMed

ABSTRACT
Mahaim fiber exhibits atrio-ventricular node like properties and generally is localized at the lateral aspect of the tricuspid annulus. Of the varying methods for localization, ablation at the site of Mahaim potential is the most accepted and successful method. Radiofrequency ablation of Mahaim fiber has high success rates.

No MeSH data available.