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module menu icon Practical considerations

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The wide availability of affordable, validated home blood pressure monitors increases the possibility of people being able to manage their blood pressure themselves. 

Self-monitoring is associated with lower blood pressure, and studies have shown that when used in conjunction with other interventions such as medicines reviews, education and lifestyle interventions, it leads to a clinically significant reduction in blood pressure.

Practical Considerations

You can support people to source a validated monitor that fits correctly, provide information on how to record blood pressure at home, and advise on the adjustment factor made to home blood pressure measurements.

Adjustment factors

Validated monitors

The British and Irish Hypertension Society (BIHS) has a list of validated monitors for home use here.

Cuff size

Most blood pressure monitors come with a medium sized cuff. If the cuff size is not correct, the reading will not be accurate. Once the cuff is on, it should wrap snugly around the person’s upper arm, and there should be space to slide two fingertips underneath it. For obese or underweight people, a different cuff size might be required to ensure an accurate reading. Wrist cuffs are not recommended. 


Home blood pressure monitors should be calibrated according to the manufacturer’s instructions.

Atrial fibrillation

In people with atrial fibrillation, blood pressure readings can be inaccurate. Some blood pressure monitors come with inbuilt arrythmia detection to alert the user.


Blood pressure measurements taken at home should be corrected by 5/5 mmHg against clinic targets. This means that a home blood pressure measurement of 135/85 mmHg would be equivalent to a clinic blood pressure target of 140/90 mmHg.