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A professional puts an inflatable cuff around the patients arm.This cuff is then inflated, which tightens on your arm. The cuff has a gauge on it that will measure your blood pressure.
Systolic blood pressure (the first and higher number) measures pressure inside your arteries when the heart beats.Diastolic blood pressure (the second and lower number) measures the pressure inside the artery when the heart rests between beats.

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