Left septal slow pathway ablation for AVNRT can be successfully guided by positioning a trans-aortic catheter to record a left His bundle potential when right-sided ablation fails.
May support left septal ablation via transaortic His recording in refractory AVNRT; hypothesis-generating case report requiring prospective validation.
We report on a patient in whom right-sided ablation at the inferior part of the triangle of Koch was unsuccessful whereas ablation from the left septum was not possible due to ventriculoatrial (VA) block during radiofrequency (RF)-induced junctional rhythm. Successful ablation from the left septum was accomplished only after positioning of a trans -aortic catheter for recording of a left His bundle potential.
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Demosthenes G. Katritsis (2010) studied this question.
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