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. 2023 Dec 15;40(1):131–142. doi: 10.1002/joa3.12976

FIGURE 5.

FIGURE 5

Patient 12. Intracardiac electrograms recorded during slow–fast AVNRT with a bystander cNVP connected to the FP. (A) The PVC delivered during His‐refractoriness terminates the tachycardia 1 cycle later without atrial capture. This observation is diagnostic of slow–fast AVNRT with a bystander cNVP that is connected to the FP and rules out ORT (Steps 1 and 2). (B) Right ventricular overdrive pacing also causes VA block during the transition zone, supporting presence of a cNVP. Abbreviations as in Figure 2.