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First two steps to the diagnosis of AVNRT with a bystander cNVP and the corresponding observations per study patient. A, atrium; AA, atrial‐atrial; AH, atrio‐His; AVNRT, atrioventricular nodal reentrant tachycardia; cNVP, concealed nodoventricular pathway; FS, fast‐slow; HA, His‐atrial; HH, His‐His; PVC, premature ventricular contraction; RVOP, right ventricular overdrive pacing; SF, slow‐fast; V, ventricle; VA, ventriculoatrial.
