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What does the diastolic blood pressure number mean?

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The diastolic reading, or the bottom number, is the pressure in the arteries when the heart rests between beats. This is the time when the heart fills with blood and gets oxygen.

A normal diastolic blood pressure is lower than 80. A reading of 90 or higher means you have high blood pressure.

From: Know Your Blood Pressure Numbers WebMD Medical Reference

SOURCES: : Patient Page: "Hypertension." American Heart Association: "Understanding Blood Pressure Readings," "What is High Blood Pressure?" AHA HeartHub for Patients: "High Blood Pressure."  "The Seventh Report of the Joint National Committee on Prevention, Detection, Evaluation, and Treatment of High Blood Pressure." American College of Cardiology: "2017 Guideline for the Prevention, Detection, Evaluation, and Management of High Blood Pressure in Adults."




JAMAJAMA:

Reviewed by Arefa Cassoobhoy on November 17, 2017

SOURCES: : Patient Page: "Hypertension." American Heart Association: "Understanding Blood Pressure Readings," "What is High Blood Pressure?" AHA HeartHub for Patients: "High Blood Pressure."  "The Seventh Report of the Joint National Committee on Prevention, Detection, Evaluation, and Treatment of High Blood Pressure." American College of Cardiology: "2017 Guideline for the Prevention, Detection, Evaluation, and Management of High Blood Pressure in Adults."




JAMAJAMA:

Reviewed by Arefa Cassoobhoy on November 17, 2017

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