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Blood Pressure Chart By Age

Nurse checking the blood pressure

How you can tell if you have high blood pressure

Having high blood pressure (hypertension) is not usually something that you feel or notice. It does not tend to produce obvious signs or symptoms. The only way to know what your blood pressure is, is to have it measured.

Blood pressure is measured in ‘millimetres of mercury’ (mmHg) and is written as two numbers. For example, if your reading is 120/80mmHg, your blood pressure is ‘120 over 80’.

What do the numbers mean?

Every blood pressure reading consists of two numbers or levels. They are shown as one number on top of the other.

The first (or top) number is your systolic blood pressure. It is the highest level your blood pressure reaches when your heart beats.

The second (or bottom) number is your diastolic blood pressure. It is the lowest level your blood pressure reaches as your heart relaxes between beats.

Keep your blood pressure low

Even if you do not have high blood pressure at the moment, it is important to keep your blood pressure as low as you can. The higher your blood pressure, the higher your risk of health problems.

For example, a blood pressure of 135 over 85 may be “normal” but someone with this reading is twice as likely to have a heart attack or stroke as someone with a reading of 115 over 75.

Blood pressure readings have two numbers, for example, 140/90mmHg.

The top number is your systolic blood pressure. (The highest pressure when your heart beats and pushes the blood round your body.) The bottom one is your diastolic blood pressure. (The lowest pressure when your heart relaxes between beats.)

The blood pressure chart below shows ranges of high, low and healthy blood pressure readings.

 

What blood pressure readings mean

As you can see from the blood pressure chart, only one of the numbers has to be higher or lower than it should be to count as either high blood pressure or low blood pressure:

So:

  • if your top number is 140 or more – then you may have high blood pressure, regardless of your bottom number.
  • if your bottom number is 90 or more – then you may have high blood pressure, regardless your top number.
  • if your top number is 90 or less – then you may have low blood pressure, regardless of your bottom number.
  • if your bottom number is 60 or less – then you may have low blood pressure, regardless of your top number.

 

Credit to http://www.bloodpressureuk.org

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