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 · Updated: October 5, 2026
Home blood pressure monitors report heart rhythm in three different ways, and none of them is a diagnosis. This page sorts out which monitor does which, and what the makers and the American Heart Association say about readings taken during atrial fibrillation.
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 device works out the top and bottom numbers from those vibrations with the maker's own algorithm.
The American Heart Association's 2019 statement on measuring blood pressure says it is a misperception that automatic monitors cannot give a valid reading in atrial fibrillation. It says studies show they give a valid top number, but less so for the bottom number. It gives no figure for how much less, so we do not either.
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, is 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. Omron's manuals say arm movement alone can 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 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 a recording a clinician can read. |
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.
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. Omron's manuals say the symbol can appear simply because the monitor detected arm movement.
- 2. Check your technique. Arm movement can set the flag off. 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
Your care team decides how you should measure. These points come from the American Heart Association and from the makers.
- • The AHA home protocol is two readings one minute apart, both written down. Keep every reading, not only the ones you liked.
- • The AHA's 2019 statement says automatic monitors give a valid top number in atrial fibrillation, but less so for the bottom number.
- • On the Omron Platinum BP5465 and Gold BP5360, a blank reading with the AFib symbol is the device working as designed.
- • 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: 2026-10-05. We publish what these sources say. Where they decline to give a rule, we say that instead of inventing one.
- •Screening for Atrial Fibrillation: US Preventive Services Task Force Recommendation Statement, US Preventive Services Task Force, 2022-01-25
- •Measurement of Blood Pressure in Humans: A Scientific Statement From the American Heart Association (2019), American Heart Association, 2019-03-04
- •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?
A flag is not a diagnosis. Omron's manuals say the symbol can appear simply because the monitor detected arm movement. Rest for five minutes, measure again with good technique, and write down when it happens. Omron's manuals also say that if it continues to appear, you should consult your physician. Take the log with you.
Can you accurately measure blood pressure with AFib?
The American Heart Association's 2019 statement says automatic monitors give a valid top number in atrial fibrillation, but less so for the bottom number. Read your monitor's manual too, because it may say more than you expect. 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?
In our catalogue, only the Omron Platinum BP5465 and the Omron Gold BP5360 screen for atrial fibrillation by name. Many others flag an irregular heartbeat, which may or may not be AFib. The Omron Complete BP7900 records a single-lead ECG. None of these is a 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?
We found no source on wrist monitors in atrial fibrillation, so we will not make one up. In general, the American Heart Association recommends an upper arm cuff and does not recommend wrist monitors, because they give less reliable readings.
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.