Blood pressure readings

Healthy or normal blood pressure

There are two categories of normal blood pressure:

• Normal blood pressure is usually considered to be between 90/60 mmHg and 120/80 mmHg. For over-80s, because it’s normal for arteries to get stiffer as we get older, the ideal blood pressure is under 150/90 mmHg (or 145/85 mmHg at home).
• High-normal blood pressure, sometimes called ‘pre-hypertension’, is when you don’t have an ideal blood pressure but you also don’t have high blood pressure. It’s usually considered to be between 120/80 mmHg and 140/90 mmHg. Being at this level might prompt you to live a healthier lifestyle so you don’t develop high blood pressure.

High blood pressure

There are three different stages of high blood pressure:

• Stage one: this is when your blood pressure is between 140/90 mmHg and 160/100 mmHg in the clinic, or 135/85 mmHg to 150/95 mmHg at home.
• Stage two: this is when your blood pressure is between 160/100 mmHg and 180/120 mmHg in the clinic, or over 150/95 mmHg at home.
• Stage three: this is when your systolic blood pressure is over 180 mmHg or your diastolic blood pressure is over 120 mmHg in the clinic. This stage is also called ‘severe hypertension’, and your GP will need to assess you urgently for further investigations.