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Blood pressure of 120/80 mmHg is normal. Low blood pressure is a top number reading lower than 90 or pressure 25 mmHg lower than usual. Moderate to severe high blood pressure is a top number 160 or over or the bottom number of 100 or over.

en.wikipedia.org/wiki/Blood_pressure

Blood pressure (BP) is the pressure of circulating blood on the walls of blood vessels. ... Normal resting blood pressure in an adult is approximately 120 millimetres of mercury (16 kPa) systolic, and 80 millimetres of mercury (11 kPa) diastolic, ...

www.heart.org/HEARTORG/Conditions/HighBloodPressure/KnowYourNumbers/Understanding-Blood-Pressure-Readings_UCM_301764_Article.jsp

Apr 18, 2017 ... Use our blood pressure chart to learn what your blood pressure numbers ... Learn what's considered normal, as recommended by the American ...

www.bloodpressureuk.org/BloodPressureandyou/Thebasics/Bloodpressurechart

More than 120 over 80 and less than 140 over 90 (120/80-140/90): You have a normal blood pressure reading but it is a little higher than it should be, and you ...

www.mayoclinic.org/diseases-conditions/high-blood-pressure/in-depth/blood-pressure/art-20050982

Blood pressure readings fall into four general categories, ranging from normal to stage 2 high blood pressure (hypertension). The level of your blood pressure ...

www.medicalnewstoday.com/articles/270644.php

Mar 29, 2017 ... Here we explain what blood pressure is, how it is measured, and what counts as low, high, and normal. We also explain the terminology of ...

www.healthline.com/health/high-blood-pressure-hypertension/blood-pressure-reading-explained

For a normal reading, your blood pressure needs to show a top number (systolic pressure) that's between 90 and 120 and a bottom ...

www.webmd.com/hypertension-high-blood-pressure/guide/diastolic-and-systolic-blood-pressure-know-your-numbers

Aug 1, 2016 ... WebMD explains what diastolic and systolic blood pressure numbers mean and why it's ... A normal diastolic blood pressure is lower than 80.

medlineplus.gov/highbloodpressure.html

119/79 or lower is normal blood pressure; 140/90 or higher is high blood pressure; Between 120 and 139 for the top number, or between 80 and 89 for the  ...

www.health.harvard.edu/heart-health/blood-pressure-normal-maybe-now-it-isnt

Aug 1, 2003 ... The changes included a new definition of "normal" blood pressure. This meant that 45 million Americans who had gone to sleep with normal ...