Mobile heart monitor app

DullGreyGuy

uknick said:

Ayr_Rage said:

uknick said:

And, don't waste your money on devices that say they can monitor your blood pressure.  None of them work.

Oh yes they do !

https://consumer.huawei.com/uk/wearables/watch-d2/

https://www.trustedreviews.com/reviews/huawei-watch-d2

Really?  I'd have thought Apple would have added it to their watch if it did work properly.  And, did you look at the footnotes on the Huawei page?;

"1. The practice guidelines of the European Society of Hypertension (ESH) for ambulatory blood pressure monitoring recommend 24-hour BP measurements at 15–30 min intervals, with at least 70% successful readings including 20 daytime and 7 night-time ones. Data obtained during the use of this product is for reference only, and should not be used as a basis for medical research, diagnosis, or treatment. This feature will be made available via OTA updates to the latest version.
2. This feature is not intended for medical use. Results are for reference only, and should not be used as a basis for medical research, diagnosis, or treatment."

If the manufacturer says it's not accurate enough for medical purposes, what is it good for?

The Trusted Reviews didn't say whether they'd checked the data against a dedicated blood pressure monitor to gauge its accuracy.  A bit of an oversight if they touting it to be of use.

Don't misunderstand me, I suffer from high blood pressure and would love a wrist monitor that let me know what it is at any time.  But, I'm not sure the technology is there yet.

I'd argue the solution is crude for Apple's standards, their history is rarely being the first but being the first with a good solution. 

The EU have given it a licence as a medical device. Any caveat from the manufacturer is likely to be to avoid liability claims and reduced insurance costs by having a disclaimer that you shouldn't rely it alone.

PHK

uknick said:

 Ayr_Rage said:

uknick said:

And, don't waste your money on devices that say they can monitor your blood pressure.  None of them work.

Oh yes they do !

https://consumer.huawei.com/uk/wearables/watch-d2/

https://www.trustedreviews.com/reviews/huawei-watch-d2

Really?  I'd have thought Apple would have added it to their watch if it did work properly.  And, did you look at the footnotes on the Huawei page?;

"1. The practice guidelines of the European Society of Hypertension (ESH) for ambulatory blood pressure monitoring recommend 24-hour BP measurements at 15–30 min intervals, with at least 70% successful readings including 20 daytime and 7 night-time ones. Data obtained during the use of this product is for reference only, and should not be used as a basis for medical research, diagnosis, or treatment. This feature will be made available via OTA updates to the latest version.
2. This feature is not intended for medical use. Results are for reference only, and should not be used as a basis for medical research, diagnosis, or treatment."

If the manufacturer says it's not accurate enough for medical purposes, what is it good for?

The Trusted Reviews didn't say whether they'd checked the data against a dedicated blood pressure monitor to gauge its accuracy.  A bit of an oversight if they touting it to be of use.

Don't misunderstand me, I suffer from high blood pressure and would love a wrist monitor that let me know what it is at any time.  But, I'm not sure the technology is there yet.

Apple use the same caveat for the Apple Watch. 

The Huawei is licensed as a medical device (and the best part of £800!)

Ayr_Rage

PHK said:

uknick said:

 Ayr_Rage said:

uknick said:

And, don't waste your money on devices that say they can monitor your blood pressure.  None of them work.

Oh yes they do !

https://consumer.huawei.com/uk/wearables/watch-d2/

https://www.trustedreviews.com/reviews/huawei-watch-d2

Really?  I'd have thought Apple would have added it to their watch if it did work properly.  And, did you look at the footnotes on the Huawei page?;

"1. The practice guidelines of the European Society of Hypertension (ESH) for ambulatory blood pressure monitoring recommend 24-hour BP measurements at 15–30 min intervals, with at least 70% successful readings including 20 daytime and 7 night-time ones. Data obtained during the use of this product is for reference only, and should not be used as a basis for medical research, diagnosis, or treatment. This feature will be made available via OTA updates to the latest version.
2. This feature is not intended for medical use. Results are for reference only, and should not be used as a basis for medical research, diagnosis, or treatment."

If the manufacturer says it's not accurate enough for medical purposes, what is it good for?

The Trusted Reviews didn't say whether they'd checked the data against a dedicated blood pressure monitor to gauge its accuracy.  A bit of an oversight if they touting it to be of use.

Don't misunderstand me, I suffer from high blood pressure and would love a wrist monitor that let me know what it is at any time.  But, I'm not sure the technology is there yet.

Apple use the same caveat for the Apple Watch. 

The Huawei is licensed as a medical device (and the best part of £800!)

Sorry @PHK, you are incorrect, the Huawei Watch D2 is currently £349.99

https://consumer.huawei.com/uk/wearables/watch-d2/buy/

Grumpy_chap

Ayr_Rage said:

I have a Huawei Watch 4 Pro and the Huawei Health app and the ECG function has been very useful in showing my periods of heart arrhythmia to health professionals who are, of course, doing the diagnosis and treatment.

Out of interest - how does a watch work to record blood pressure?

I have a watch with light-based pulse monitor.  I am not sure how accurate the devices are but, ultimately, the light shining through the skin is what the first line medical services have with the little clip things they put on your finger.  Maybe they are not that accurate either.  Maybe accuracy is not that important if it is simply giving a general indication of pulse and variance and alerting extreme high or low events.

I also have a blood pressure cuff which pumps up and then deflates around the upper arm.  I do not use it very often but it probably is quite accurate.

I assume a watch that measures blood pressure is not pumping up and deflating every so often so it must use some other way of measurement.

Ayr_Rage

Grumpy_chap said:

Ayr_Rage said:

I have a Huawei Watch 4 Pro and the Huawei Health app and the ECG function has been very useful in showing my periods of heart arrhythmia to health professionals who are, of course, doing the diagnosis and treatment.

Out of interest - how does a watch work to record blood pressure?

I have a watch with light-based pulse monitor.  I am not sure how accurate the devices are but, ultimately, the light shining through the skin is what the first line medical services have with the little clip things they put on your finger.  Maybe they are not that accurate either.  Maybe accuracy is not that important if it is simply giving a general indication of pulse and variance and alerting extreme high or low events.

I also have a blood pressure cuff which pumps up and then deflates around the upper arm.  I do not use it very often but it probably is quite accurate.

I assume a watch that measures blood pressure is not pumping up and deflating every so often so it must use some other way of measurement.

It does use an inflatable pressure cuff that is incorporated into the watch band, apparently it's virtually silent and can be set to do measurement on demand or to a schedule.

Have a look at this review, where I found the picture.

https://www.trustedreviews.com/reviews/huawei-watch-d2

Ayr_Rage

@Grumpy_chap I have the Huawei Watch 4 Pro and both the pulse sensor and the EGC sensor are pretty accurate as confirmed with the emergency department staff who were rather impressed with its performance as compared to the monitors I was wired up to for six hours a month ago.

I was asked to print a copy of one EGC taken at home as it showed something that did not occur in the hospital and the consultant said it would be useful for them to have.

Whilst the watch and smartphone app cannot diagnose what is going on they do direct you to seek professional advice, which in my case has resulted in a referral to the local cardiology team after my ED visit.

The D2 is even more advanced and is a certified medical device.

Grumpy_chap

Ayr_Rage said:

It does use an inflatable pressure cuff that is incorporated into the watch band, apparently it's virtually silent and can be set to do measurement on demand or to a schedule.

Thanks
I am not sure I'd like that - given the link shared upthread shows the schedule being set to every half hour, plus a night time schedule.
It must consume a lot of battery life.

I suspect the number of people that really need continues BP monitoring is quite low so maybe these devices are better suited to medical need applications.  Maybe I am totally wrong.

400ixl

The later Samsung Galaxy watches do ECG and Blood pressure and are accurate. You know the blood pressure is as you have to calibrate it with a manual equivalent on a regular basis, and now bags in straps.

Personally not a Samsung fan, but for Android it is one of the best options out there. Overall it is better than pretty much all of them if you use a Samsung phone, or want to hack a non Samsung phone to work (if neither of those then look elsewhere).

Interestingly when calibrated against a friends Huawei watch it was the closer of the two, but neither would be an issue for what its purpose is. 

DullGreyGuy

Grumpy_chap said:

Ayr_Rage said:

I have a Huawei Watch 4 Pro and the Huawei Health app and the ECG function has been very useful in showing my periods of heart arrhythmia to health professionals who are, of course, doing the diagnosis and treatment.

Out of interest - how does a watch work to record blood pressure?

I have a watch with light-based pulse monitor.  I am not sure how accurate the devices are but, ultimately, the light shining through the skin is what the first line medical services have with the little clip things they put on your finger.  Maybe they are not that accurate either.  Maybe accuracy is not that important if it is simply giving a general indication of pulse and variance and alerting extreme high or low events.

I also have a blood pressure cuff which pumps up and then deflates around the upper arm.  I do not use it very often but it probably is quite accurate.

I assume a watch that measures blood pressure is not pumping up and deflating every so often so it must use some other way of measurement.

It does the same, it inflates a bag built into the strap hence my comment of it being a fairly crude solution. It also requires the arm to be raised and supported before measuring. 

Even if you look at dedicated medical devices there are warnings that blood pressure measuring at the wrist is not as accurate as measuring it on the upper arm hence all hospitals and GPs dont use the wrist. 

The light monitor for pulse is very accurate... its measurement of blood oxygen is slightly more ropey and particularly if you have a darker complexion.