We described a 15-year-old boy who underwent the catheter ablation for
the nodoventricular tachycardia that had difficulty in differentiation
from atrioventricular nodal reentrant tachycardia with upper common
pathway. The slow pathway ablation revealed an anterograde conduction of
nodoventricular fiber. We successfully performed the catheter ablation
targeting for the right ventricular insertion site of the
nodoventricular fiber.