The bottom number is the pressure when the heart relaxes and fills with blood.

After contracting, the heart must relax to fill up again.

Her heart skipped a beat and then relaxed as she heard him pick up the receiver.

When the heart relaxes, the pressure in the arteries falls to this value.

After pumping, your heart relaxes and fills with blood.

Diastolic pressure, when the heart relaxes between beats, should be lower than 90.

This is due to backflow of blood through the aortic valve when the heart relaxes.

The heart relaxes to allow this blood back into its left chamber.

It's the lowest pressure that occurs when your heart relaxes between beats.

Hypertension is defined as a blood pressure in which the lower number, when the heart relaxes, is 90 or greater.