Isovolumetric ventricular relaxation

- Repolarization of the ventricles is now complete (end of the T wave).

- The aortic valve closes, followed by closure of the pulmonic valve. Closure of the semilunar valves corresponds to the second heart sound. Inspiration causes splitting of the second heart sound.

- The AV valves remain closed during most of this phase.

- Ventricular pressure decreases rapidly because the ventricle is now relaxed.

- Ventricular volume is constant (isovolumetric) because all of the valves are closed.

- The "blip" in the aortic pressure tracing occurs after closure of the aortic valve and is called the dicrotic notch, or incisura.

-When ventricular pressure becomes less than atrial pressure, the mitral valve opens.

Was this article helpful?

0 0
Anxiety and Depression 101

Anxiety and Depression 101

Everything you ever wanted to know about. We have been discussing depression and anxiety and how different information that is out on the market only seems to target one particular cure for these two common conditions that seem to walk hand in hand.

Get My Free Ebook


Post a comment