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What is blood pressure"?

What is blood pressure?

 

Blood pressure is the force of the blood on the artery walls as the heart pumps blood through the body. The arteries are the blood vessels that carry blood from the heart to the rest of the body.

When the heart contracts it pumps blood through the blood vessels. Each time the heart contracts, the blood pushes harder against the walls of the arteries than it does when it rests between beats. This means that the pressure of the blood on the artery walls is greatest each time the heart contracts, which is the systolic pressure, the higher (upper) number in a blood pressure reading.

When the heart rests between beats, the pressure of blood on artery walls is lower; this is the diastolic pressure, the lower number in a blood pressure reading.

These 2 levels of blood pressure--systolic and diastolic--are measured when someone takes your blood pressure. For example, in the blood pressure reading of 140/80, 140 is the systolic pressure (the pumping pressure) and 80 is the diastolic pressure (the resting pressure). The pressures are measured in millimeters of mercury.

Pre-high blood pressure (prehypertension) is between 120/80 and 139/89.

Stage 1 high blood pressure ranges from 140/90 to 159/99.

Stage 2 high blood pressure is over 160/100.

There are new guidelines for blood pressure, the JNC 8 guidelines of patients over 60 years old without diabetes or kidney disease the goal blood pressure is <150/90.  For patients 18-59 years old without major comorbidities, and in patients 60 years or older who have diabetes or kidney disease the new blood pressure goal is <140/90.

The higher your blood pressure, the greater your risk of having a stroke, heart attack, or other serious medical problems.

You can do the following things to help keep your blood pressure under control:

Maintain a healthy body weight. Avoid being overweight.

Follow a diet. This diet is low in fat, cholesterol, red meat, and sweets. It emphasizes fruits, vegetables, and low-fat dairy foods. Include whole-grain products, fish, poultry, and nuts.

Use less salt. Check the levels of sodium listed on food labels. Avoid canned and prepared foods, such as soups, dinner mixes to which you just add the meat or cheese, chips, and crackers, unless the label says no salt is added.

Try not to have too much caffeine in your diet.

Include regular physical activity in your schedule, after checking with your healthcare provider.

If you are a woman, do not have more than 1 drink of alcohol a day. Men should not have more than 2 drinks a day. (Alcohol raises your blood pressure.)

Try to reduce the amount of stress in your life, or learn techniques to help you relax and cope with stress better.

If you take medicine for high blood pressure, always follow your healthcare provider's instructions. Don't take less medicine or stop taking medicine without talking to your provider first. It can be dangerous to suddenly stop taking blood pressure medicine. Also, do not increase the dosage of any medicine without first talking with your provider.

If your blood pressure is normal, check it once a year. If it's above normal, follow the schedule for checkups recommended by your healthcare provider.

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