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What is systolic and diastolic blood pressure?

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The blood pressure reading is measured in millimeters of mercury (mmHg) and is written as systolic pressure, the force of the blood against the artery walls as your heart beats, over diastolic pressure, the blood pressure between heartbeats. For example, a blood pressure reading is written as 120/80 mmHg, or "120 over 80". The systolic pressure is 120 and the diastolic pressure is 80.

SOURCES: Mayo Clinic. American Heart Association. American Medical Association.

Reviewed by Suzanne R. Steinbaum on July 06, 2019

SOURCES: Mayo Clinic. American Heart Association. American Medical Association.

Reviewed by Suzanne R. Steinbaum on July 06, 2019

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