“Left ventricular” AV nodal reentrant tachycardia: Case report and review of the literature

Introduction Ablation failure is uncommon for typical slow–fast AV nodal reentrant tachycardia (AVNRT) and it is estimated that in o1% of cases, ablation in the left atrium is required to modify the circuit. We report a case of typical AVNRT refractory to medical therapy and standard ablation approaches, that ultimately required ablation from the left ventricle to achieve noninducibility and clinical success. We present the relevant anatomy of the “left side” of the triangle of Koch and review the cumulative cases in the literature of left-sided ablation of AVNRT.