AV node

What are the tasks of the AV node?

In the healthy heart, the AV node is the only structure involved in the conduction of electric impulses from the atria to the ventricles. It is the heart’s natural filter for all preliminary excitations. If it didn’t exist, then an episode of atrial fibrillation, the single most frequent heart rhythm disturbance, would lead directly to ventricular fibrillation.