Key result
Three-dimensional electro-anatomical mapping (CARTO) successfully recorded small discrete potentials reflecting Mahaim fiber excitation along the right ventricular free wall.
Case Report (n=1)
Three-dimensional electro-anatomical mapping can successfully identify and map the anatomic location and excitation potentials of a right lateral Mahaim fiber.
May aid Mahaim fiber localization in select ablations; hypothesis-generating and requires prospective validation.
We report a patient who underwent an electrophysiologic study and radiofrequency catheter ablation for a right lateral Mahaim fiber. During sinus rhythm with overt preexcitation, propagation mapping was performed in the right ventricle using a three-dimensional electro-anatomical mapping system (CARTO). Small discrete potentials, which reflected the excitation of the Mahaim fiber, could be recorded along the line from the vicinity of the parental tricuspid annulus to approximately one-third of distal site from the base to the apex. The relationship of the timing of its potential to the anatomical location could be disclosed on recordings of the local electrogram and anatomical map.
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Morita et al. (2005) conducted a case report in Right lateral Mahaim fiber (n=1). Electrophysiologic study and radiofrequency catheter ablation with 3D electro-anatomical mapping (CARTO) was evaluated on Anatomic and electrophysiologic evaluation of the Mahaim fiber. Three-dimensional electro-anatomical mapping (CARTO) successfully recorded small discrete potentials reflecting Mahaim fiber excitation along the right ventricular free wall.
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