Best Blood Pressure Monitor for Atrial Fibrillation (AFib) - 2026
By the BP Monitor Lab editorial team · Written from manufacturer documentation and published guidance, not from our own device testing · Last checked: May 13, 2026
Standard blood pressure monitors can struggle with AFib because the irregular pulse throws off the measurement algorithm. Here are the best options for people with AFib and hypertension.
Important Clinical Note
An irregular heartbeat flag from a home BP monitor is not a diagnosis of AFib. Only an ECG (electrocardiogram) performed by a healthcare provider can diagnose AFib. If your monitor consistently flags an irregular pulse, bring your reading log to your doctor or cardiologist.
Why AFib Makes BP Measurement Harder
Most home monitors use oscillometric measurement. They inflate the cuff and detect vibrations in your artery as pressure drops. The algorithm converts these into systolic and diastolic values by assuming a regular heartbeat pattern.
AFib changes how much blood each beat pushes out, so the pattern the monitor is reading stops being regular. That makes the reading less reliable. We are not going to put a number on how much less, because we could not source one we trust, and an invented figure on this page would be worse than no figure.
What we can tell you comes from the manufacturer. Omron states in the BP5465 manual that the device has not been validated for patients with atrial fibrillation. When its Possible AFib detector fires, the monitor does not display the reading at all, because Omron says blood pressure and pulse measured during atrial fibrillation are generally not reliable. A blank screen there is the device working as designed.
Averaging several readings, as TruRead does, gives you a steadier number than a single one. That is a general improvement, not a fix for AFib, and no home monitor we cover claims validated accuracy during it.
Three Different Features, Often Confused
Almost every monitor on sale claims something about heart rhythm, and the claims are not equivalent. Marketing tends to blur them, so it is worth being precise about what you are buying.
| Feature | What it actually does |
|---|---|
| Irregular heartbeat flag (IHB) | Notices that the beats during the measurement were not evenly spaced. It cannot say why. Extra beats, movement and a wandering breath can all set it off. Almost every monitor has this. |
| AFib screening | Analyses the beat pattern against an algorithm trained to recognise atrial fibrillation specifically, and says so when it sees it. Narrower and more useful than a plain IHB flag, but still a screening signal. |
| Single-lead ECG | Records an actual electrical trace you can save and show to a clinician. It is the only one of the three that produces evidence a doctor can read rather than an icon you have to be believed about. |
None of the three diagnoses anything. Atrial fibrillation is diagnosed from an ECG interpreted by a clinician. If you are trying to work out which of them the icon on your own screen belongs to, our Omron symbol decoder separates them model by model. What these features do is tell you when it is worth asking for one, which is a genuinely valuable thing for a device on your kitchen table to do.
Which monitor has which feature
- Irregular heartbeat flag. On almost everything, including the Omron Evolv BP7000 and the A&D UA-651BLE. With no diagnosis and no particular worry, a validated cuff is enough. Check the A&D UA-651BLE on Amazon
- AFib screening by name. Within the Omron line only the Platinum BP5465 and the Gold BP5360 define a Possible AFib detector. When it fires, the monitor withholds the reading rather than show a number it does not trust. Check the Omron Platinum BP5465 on Amazon
- Single-lead ECG. In the United States the home cuff that records a trace is the Omron Complete 2-in-1 (BP7900), cleared by the FDA under K182579. The Withings BPM Core records one too, but is not sold here. Check the Omron Complete 2-in-1 on Amazon
We earn a commission if you buy through these links, at no extra cost to you. None of these devices diagnoses atrial fibrillation.
What to Do When the Icon Appears
- 1. Do not panic and do not delete the reading. A single flag is common and often means nothing on its own.
- 2. Check your technique. Movement, talking, a tense arm or crossed legs can all produce an irregular trace. Rest five minutes and measure again properly.
- 3. Write down when it happens. Note the date, time, the reading and whether you felt anything: palpitations, breathlessness, light-headedness, or nothing at all.
- 4. If it keeps appearing, take the log to a healthcare professional. A record of several flags, with dates and how you felt, is a far stronger reason to investigate than one icon on one morning. How many is enough is their judgement, not a number we can give you.
- 5. Symptoms outrank any icon. The AHA says to call 911 for chest pain, shortness of breath, back pain, numbness, weakness, a change in vision or difficulty speaking alongside a reading over 180/120. Do not wait on a device to tell you something is wrong, and do not be reassured by an icon that stays quiet.
Measuring Blood Pressure When You Have AFib
The rhythm makes each individual reading noisier, so the usual advice about averaging stops being a nicety and becomes the point.
- • Take three readings a minute apart and use the average, not the lowest or the most alarming.
- • A monitor with a built-in averaging mode does this without asking, which removes the temptation to keep only the reading you liked.
- • Expect more spread between readings than somebody in a regular rhythm would see. That spread is information, so record it rather than smoothing it away.
- • Validation of a monitor in general adults does not automatically transfer to atrial fibrillation. If accuracy in AFib specifically matters for your care, ask your doctor which device they want you to use.
Where this comes from
Guideline and evidence last checked: 2026-08-31. We publish what these sources say. Where they decline to give a rule, we say that instead of inventing one.
- •2025 AHA/ACC Guideline for the Prevention, Detection, Evaluation, and Management of High Blood Pressure in Adults — American Heart Association / American College of Cardiology, 2025-08-14
- •Screening for Atrial Fibrillation: US Preventive Services Task Force Recommendation Statement — US Preventive Services Task Force
- •Home Blood Pressure Monitoring — American Heart Association
Frequently Asked Questions
What is the difference between an irregular heartbeat flag and AFib detection?
An irregular heartbeat flag only notices that the beats were unevenly spaced during the measurement, and it cannot say why. AFib detection analyses the beat pattern against an algorithm trained on atrial fibrillation specifically. Both are screening signals. Neither diagnoses anything, because atrial fibrillation is diagnosed from an ECG read by a clinician.
My monitor flagged an irregular heartbeat once. Should I worry?
One flag on one reading is common and frequently means nothing. Movement, talking, a tense arm or an extra beat can all trigger it. Rest for five minutes, measure again with good technique, and write down when it happens. If it keeps appearing across a week, take that log to your doctor and ask about an ECG.
Can you accurately measure blood pressure with AFib?
Yes, but read the manual first, because it may say more than you expect. Oscillometric monitors work by reading pressure oscillations and assuming a fairly regular pulse, which atrial fibrillation is not. Omron states in the BP5465 manual that the device has not been validated for patients with atrial fibrillation, and its Possible AFib detector withholds the reading entirely when it sees that pattern rather than showing a number it does not trust. Averaging several readings helps, and no home monitor we cover claims validated accuracy during AFib. If you have diagnosed AFib, ask your care team which monitor they want you to use and how to record it.
Which blood pressure monitors detect AFib?
Several monitors flag irregular heartbeat during measurement. The Omron Platinum, Withings BPM Core, and Beurer BM67 all display an irregular pulse indicator. However, this is a screening flag, not a clinical AFib diagnosis.
Should I tell my doctor my monitor flagged an irregular pulse?
Yes, and bring the log rather than the memory of it. We are not going to tell you how many flags in how many days should prompt the call, because no source we trust sets that number and it would depend on your history anyway. A record of when the flags happened and what you felt at the time is more use to a clinician than a count. Only a clinician can diagnose an arrhythmia, normally with an ECG.
Is a wrist monitor safe to use with AFib?
Wrist monitors are even less reliable during AFib than upper arm models. The radial artery reading is more sensitive to pulse irregularity. Stick with a validated upper arm monitor.
How often should I monitor blood pressure with AFib?
Ask your cardiologist, and follow what they tell you rather than a schedule you found online. We do not publish a frequency for people with a diagnosed arrhythmia, because the right answer depends on your treatment and only your care team knows it. Whatever they ask for, log every reading and note anything unusual beside it, such as an irregular pulse symbol, so they see it in context.