Related Experiment Video
Updated: Jun 13, 2025

In Silico Clinical Trials for Cardiovascular Disease
Published on: May 27, 2022
Decremental properties of a concealed nodoventricular pathway
Koumei Onuki1, Koichi Nagashima2, Yasuharu Matsunaga-Lee3
1Department of Cardiology, Kokura Memorial Hospital, Kitakyushu, Japan.
Introduction:
The decremental properties of the nodoventricular pathway (NVP) are uncertain.
Methods And Results:
During short RP supraventricular tachycardia, a His-refractory premature ventricular contraction (PVC) consistently terminated the tachycardia without atrial capture immediately after the PVC. Whereas a slightly earlier PVC failed to reset the subsequent His but terminated the tachycardia without atrial capture one cycle later.
Conclusion:
These observations are diagnostic of slow-fast atrioventricular nodal reentrant tachycardia (AVNRT) with a bystander concealed-NVP and can be explained by decremental properties in the NVP itself; greater prematurity of the PVC resulted in more decremental conduction over the NVP, causing the AVNRT termination one cycle later.
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