How to reading Digital Blood Pressure Monitor?
Blood pressure is typically recorded as two numbers, written as a ratio like this:
Read as "117 over 76 millimeters of mercury"
The top number, which is also the higher of the two numbers, measures the pressure in the arteries when the heart beats (when the heart muscle contracts).
The bottom number, which is also the lower of the two numbers, measures the pressure in the arteries between heartbeats (when the heart muscle is resting between beats and refilling with blood).
What is the AHA recommendation for healthy blood pressure?
This blood pressure chart reflects categories defined by the American Heart Association.
mm Hg (upper #)
mm Hg (lower #)
|Normal||less than 120||and||less than 80|
|Prehypertension||120 – 139||or||80 – 89|
|High Blood Pressure
(Hypertension) Stage 1
|140 – 159||or||90 – 99|
|High Blood Pressure
(Hypertension) Stage 2
|160 or higher||or||100 or higher|
(Emergency care needed)
|Higher than 180||or||Higher than 110|
How is high blood pressure diagnosed?
Your healthcare providers will want to get an accurate picture of your blood pressure and chart what happens over time. Starting at age 20, the American Heart Association recommends a blood pressure screening at your regular healthcare visit or once every 2 years, if your blood pressure is less than 120/80 mm Hg.
Your blood pressure rises with each heartbeat and falls when your heart relaxes between beats. While BP can change from minute to minute with changes in posture, exercise, stress or sleep, it should normally be less than 120/80 mm Hg (less than 120 systolic AND less than 80 diastolic) for an adult age 20 or over. About one in three U.S. adults has high blood pressure.
If your blood pressure reading is higher than normal, your doctor may take several readings over time and/or have you monitor your blood pressure at home before diagnosing you with high blood pressure.
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