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  • Title: Successful elimination of concealed accessory pathway-mediated tachycardia by ablation of AV nodal slow pathway.
    Author: Padanilam BJ, Akula D, Vaughn P, Prystowsky EN.
    Journal: J Cardiovasc Electrophysiol; 2006 Jun; 17(6):674-7. PubMed ID: 16836721.
    Abstract:
    We report a case of atrioventricular reentrant tachycardia (AVRT) using a concealed para-Hisian accessory pathway for retrograde conduction, which also required anterograde conduction over the AV nodal slow pathway to maintain the tachycardia. The shortest VA interval during AVRT (70 ms) was noted at a site with His bundle electrogram amplitude of 0.25 mV. The AVRT was cured by radiofrequency ablation of the AV nodal slow pathway without affecting accessory pathway conduction. The patient has not reported any sustained palpitations at 2 years after ablation while receiving no medications. The case presented in this report illustrates a para-Hisian AVRT that was successfully eliminated by an unconventional approach of ablation of the atrial inputs to the AV nodal slow pathway.
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