The correct answer to this question is 0.12 – 20 seconds. It appears this question has a spelling error and should say AV node, instead of mode. Nevertheless, the delay is 0.12 – 20 seconds. In the AV node, AV stands for atrioventricular. It is an integral part of the electrical system of the heart, and it has many functions.
The AV node controls the heart's electrical impulse transmission. This impulse is then passed through the ventricles. The 0.12 – 20-second delay in the AV node is healthy and essential for the heart to beat correctly. The suspension optimizes the performance of the heart.