What do the numbers in blood pressure mean?

1 Answer
Joëlle
Aug 4, 2016

Pressure during contraction of the heart and pressure during relaxation of the heart.

Explanation:

The blood pressure is the pressure that the blood exerts to the walls of the blood vessels. The pressure is measured in millimeter Mercury (mmHg) and is presented in two numbers:

  1. The systolic pressure: the first recorded, highest value. This is the pressure when the heart contracts and forces blood through the vessels.
  2. The diastolic pressure: the second, lowest value. This is the pressure when the heart relaxes and fills with blood.

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