Choosing and using a home blood-pressure monitor

Katerina Galkina · EN · 07/10/2026

Check the model, not just the brand

Look up the exact device in the British and Irish Hypertension Society list ↗. Model-specific validation matters more than price, an app or extra features. Check cuff suitability for your upper-arm circumference.

An automatic upper-arm device is commonly chosen for home use. For pregnancy, arrhythmia or other particular needs, ask a clinician about the device and monitoring method. A watch estimating pressure should not automatically replace a validated monitor.

Agree measurement technique

Ask the GP, nurse or pharmacist to demonstrate; bring your monitor if useful. Sit quietly beforehand, support the arm and follow cuff instructions. Blood Pressure UK ↗ explains selection and monitoring.

Agree how many days and repeats are needed and how to submit the record. Do not repeatedly test dozens of times to obtain a preferred number.

Interpreting readings

The NHS ↗ describes different usual thresholds: 140/90 in a professional setting and 135/85 at home. One incidental reading should not independently determine diagnosis or treatment.

Record both numbers, pulse, date, time and symptoms, then share the series. Do not change prescribed doses because of one normal or high result.

When to obtain help

Ask beforehand for individual instructions about unusually high or low readings. A very high result persisting after a calm repeat, or feeling unwell, warrants urgent medical assessment.

Sudden persistent chest pain, stroke signs or severe breathing difficulty needs 999 rather than repeated measurements. Follow manufacturer instructions on servicing and accuracy checks. Proper cuff fit and a useful record matter more than numerous unverified values.