How accurate are wrist blood pressure monitors?
Answer From Francisco Lopez-Jimenez, M.D.
Some wrist blood pressure monitors may be accurate if used exactly as directed and checked against measurements taken in a medical office. For the most reliable blood pressure measurement, the American Heart Association recommends using a monitor with a cuff that goes around your upper arm, when available.
Some people with very large arms may not have access to a well-fitting arm cuff at home. If so, measuring blood pressure at the wrist may be OK. Wrist blood pressure monitors also may be an option for people who had lymph nodes removed from the armpit.
Using a wrist blood pressure monitor at home often gives falsely high readings due to poor positioning. If you use one, place it directly over the wrist artery, called the radial artery, where you can feel the pulse. Don't place it over clothes. Keep your wrist at heart level. Be still during the test and don't bend the wrist. Bending the wrist can cause incorrect readings.
It's common for blood pressure readings taken at home on any type of monitor to be different from those taken at a medical office. If you have a wrist blood pressure monitor, take the device to your healthcare professional's office. Your care team can compare the blood pressure in your arm and wrist to make sure your device is working well.
With
Francisco Lopez-Jimenez, M.D.
Show References
- Monitoring your blood pressure at home. American Heart Association. https://www.heart.org/en/health-topics/high-blood-pressure/understanding-blood-pressure-readings/monitoring-your-blood-pressure-at-home. Accessed May 13, 2022.
- Stergiou GS, et al. A universal standard for the validation of blood pressure measuring devices: Association for the Advancement of Medical Instrumentation/European Society of Hypertension/International Organization for Standardization (AAMI/ESH/ISO) collaboration statement. Hypertension. 2018; doi:10.1161/HYPERTENSIONAHA.117.10237.
- Irving G, et al. Which cuff should I use? Indirect blood pressure measurement for the diagnosis of hypertension in patients with obesity: A diagnostic accuracy review. BMJ Open. 2016; doi:10.1136/bmjopen-2016-012429.
- Schaefer KR, et al. Home blood pressure monitoring devices: Device performance in an Alaska native and American Indian population. Journal of Aging Health. 2021; doi:10.1177/08982643211013692.
- Sharman JE, et al. Lancet Commission on Hypertension group position statement on the global improvement of accuracy standards for devices that measure blood pressure. Journal of Hypertension. 2020; doi:10.1097/HJH.0000000000002246.
- Cohen J, et al. White coat and masked hypertension. https://www.uptodate.com/contents/search. Accessed May 16, 2022.
- Muntner P, et al. Measurement of blood pressure in humans: A scientific statement from the American Heart Association. Hypertension. 2019; doi:10.1161/HYP.0000000000000087.
- Thomas G, et al. Blood pressure measurement in the diagnosis and management of hypertension in adults. https://www.uptodate.com/contents/search. Accessed May 16, 2022.
- Palatini P, et al. Recommendations for blood pressure measurement in large arms in research and clinical practice: Position paper of the European Society of Hypertension Working Group on Blood Pressure Monitoring and Cardiovascular Variability. Journal of Hypertension. 2020; doi:10.1097/HJH.0000000000002399.
- Casiglia E, et al. Poor reliability of wrist blood pressure self-measurement at home: A population-based study. Hypertension. 2016; doi:10.1161/HYPERTENSIONAHA.116.07961.
Original article: https://www.mayoclinic.org/diseases-conditions/high-blood-pressure/expert-answers/wrist-blood-pressure-monitors/faq-20057802