What is blood pressure?
With each beat of the heart, blood is pumped out of
the heart and into the blood vessels (arteries), which carry blood throughout
your body. Blood pressure is the measurement of the pressure or force inside
your blood vessels (arteries) with each beat of the heart.
High blood pressure, also called hypertension, means the pressure in your arteries is above the normal range.
How is blood pressure recorded?
Blood pressure is written as two numbers, such as
120/80 mm Hg (millimeters of mercury, the unit of measure for blood pressure).
The first number is the systolic pressure. Systolic pressure is the pressure in
the arteries when the heart beats and fills the arteries with blood. The second
number is the diastolic pressure. Diastolic pressure is the pressure in the
arteries when the heart rests between beats.
What is a normal blood pressure reading?
| Type of blood pressure reading | Ideal blood pressure | High blood pressure |
|---|
| (Note: Pre-hypertension=130/85; all chart numbers in mm Hg) |
| Systolic | 115 | Over 140 |
| Diastolic | 75 | Over 90 |
| Acceptable blood pressure for people with systolic heart failure |
|
| Systolic | greater than 80 and less than 100 |
| Diastolic | less than 70 |
Who is more likely to have high blood pressure?
- People with family members who have high blood pressure or a history of heart disease or diabetes
- African-Americans
- Women who are pregnant
- Women who take birth control pills
- People over age 60
- People who are overweight
- People who are not active
- People who drink a lot of alcohol
- People who eat too many fatty foods or foods with too much salt
- People who smoke
What can happen if high blood pressure is not treated?
- Stroke
- Enlarged heart
- Kidney disease
- Heart failure
- Heart attack
- Hemorrhages in the eye blood vessels
- Peripheral vascular disease: lack of blood circulation in the legs,
cramp-like pain in the calves (claudication), or aneurysm (abnormal
enlargement or bulging of an artery caused by damage to or weakness in the
blood vessel wall)
What to do if you have high blood pressure.
The goal of therapy, if you have high blood pressure,
is to lower your blood pressure to less than 140/90 mm Hg. If you have high
blood pressure:
- Eat healthy foods that are low in salt and fat.
- Lose weight, if you are overweight.
- Limit alcohol to no more than one drink each day.
- Exercise regularly.
- Quit smoking.
- Take high blood pressure medicine if your doctor or nurse prescribes it
and follow the doctor’s or nurse’s directions carefully. Do not abruptly
stop your blood pressure medications, even if your blood pressure numbers
are better, as this can cause serious harm to your body.
- Have regular blood pressure checks and check your own blood pressure at
home as recommended by your doctor or nurse.