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How on-the-wrist sleep apnea detection works

empirical.health

91–100 of 170 posts

Re: How on-the-wrist sleep apnea detection works

#91
>Undiagnosed sleep apnea affects more than 23.5 million people in the US alone, leading to $150B of wasted medical spend every year.

What do they mean by "wasted medical spend" here?

(1) Patients incorrectly spending money on a misdiagnosis, or (2) apnea solution providers not making money off people when they could?

Re: How on-the-wrist sleep apnea detection works

#92
post #9
post #3

Earlier quoted context omitted.

I suspect they also need oxygen saturation (introduced in the Apple Watch Series 6 in 2020) in order to make their overall sleep apnea detection algorithm work. Given that it only works with the Series 9 or above, it's possible they're also using the the temperature sensor as another input into their algorithm.

Did Apple resolve the patent issue that disabled oxygen saturation in the Series 9? Although it's possible that Sleep Apnea detection uses the oxygen saturation sensor but doesn't show its results directly.

They're still appealing, but the underlying patent expires in 2028, so maybe they'll wait it out.

Re: How on-the-wrist sleep apnea detection works

#93
post #65

Earlier quoted context omitted.

What to search for? Link?

I don't know who will do it without any kind of prescription, but it's pretty trivial to get an at-home test from someone like 1800cpap and they'll write a prescription based on the results. I bet they have a nearly 100% rate of writing prescriptions, given the obvious conflict of interest.

> I bet they have a nearly 100% rate of writing prescriptions, given the obvious conflict of interest.

Even if they are honest I'd expect near 100% - people who don't expect they have issues are not going to be getting the at home test in the first place.

Re: How on-the-wrist sleep apnea detection works

#94

Earlier quoted context omitted.

> 2. No, we shouldn't regulate to whom companies should be allowed to sell them. The defaults are good enough for most. Provide an easy to use control for max pressure and people will figure it out. I'm iffy on the machines themselves for this, mostly because I'm just ignorant about the risks and potential issues. But this absolutely should be the case for the consumable/wear items that go along with it. There's been…

> I'd be fine with it being something as simple as the local pharmacy can keep them in the back and you bring in the prescription from the doctor Just curious, why do you think a Dr. should be involved at all?

You should have a Dr who keeps track of all your medical information. I want my doctor to know each time I take an Aspirin or put on a bandage. Most of the time those are meaningless activities (and I don't tell my doctor), but once in a while there is something more going on and I need to be forced into the ER.

Re: How on-the-wrist sleep apnea detection works

#95
post #8

The gatekeeping in the CPAP field is so insane. 1. Yes, we should regulate manufacturers intensely. 2. No, we shouldn't regulate to whom companies should be allowed to sell them. The defaults are good enough for most. Provide an easy to use control for max pressure and people will figure it out. Perhaps a knob? I claim: During the past decade, the risk of being maltreated by a personally set-up CPAP unit has been far…

Yeah you should be able to rent them instead of wasting months diagnosising or trying to find time in a sleep lab. Take it home for a whirl, if you sleep much better, and other QoL indexes improves, congradulations.

The machines themselves should be able to figure this out. Automation is good.

Re: How on-the-wrist sleep apnea detection works

#96
post #32

If you're interested in this, I'd recommend reading the 1870 [public domain] book "Shut Your Mouth and Save your Life". Internet Archive has it: https://archive.org/details/b28114450 Also look into "mouth taping".

You want to at least give a brief overview as to why I should trust medical advice from a book written before germ theory was widely accepted? This has all the hallmarks of quackery.

> why I should trust medical advice from a book written before germ theory was widely accepted?

Why do you think how to live healthy is a modern invention? Don't you think people had to figure that out ages ago, or else we wouldn't be here?

Re: How on-the-wrist sleep apnea detection works

#97
post #67

Earlier quoted context omitted.

> You’re right, medical advice from the 1870s and TikTok videos, what could go wrong? Have you read the book? Do you think I'd be recommending something that didn't have a very strong dataset backing it? > At what point does Betteridge’s Law of Headlines[0] kick in? Nothing is easier to manipulate than digital symbols. Thus, when talking about patterns one finds in digital symbols, one much be very very careful to bu…

> Do you really think someone would do that? Just go on the internet and tell lies? — Buster Baxter (written by Matt Steinglass, 2005) People make stuff up, especially online. If you expect others to believe you about your "very strong dataset", you should provide that very strong dataset (complete with provenance).

Did you miss the very first thread, where I provided a link to the book containing the dataset, which came out 100 years before "online" invented?

Re: How on-the-wrist sleep apnea detection works

#98
post #69

Earlier quoted context omitted.

> During the past decade, the risk of being maltreated by a personally set-up CPAP unit has been far, far smaller than the risk of not being treated at all. There have been over 500 confirmed deaths due to the Philips CPAP. The number of unconfirmed deaths would be an order of magnitude higher, in my opinion. Thing is, the CPAP issue could be argued for both sides: "See how a small manufacturing defect could cause so…

The Philips CPAP deaths were caused by a faulty machine, not by anything the users did wrong. Whether it was bought OTC or prescribed by a doctor would have no impact.

Not only that, but it wasn't a problem with the pressure settings or anything related to the function of the device, it was chunks of the sound deadening foam breaking off and people inhaling them in their sleep.

Re: How on-the-wrist sleep apnea detection works

#99
post #22

I'm not an qualified expert, but I spend a lot of time reading about and using this stuff and I'm extremely skeptical sleep apnea detection is very accurate without the pulse oximeter functionality. But gosh, I hope this is accurate across the Watch's wide user base. I wouldn't say it's likely, but I do wonder if the pulse oximeter is being used surreptitiously. In any case, if you could use the pulse oximeter, this…

IIRC the pulse oximeter isn't all that useful for sleep apnea detection anyway, because on the watch it does not run continuously. Just takes measurements every X minutes. I think the oxygen level drop happens on a short enough timescale that you need the continuous monitoring to pick up on it.

I think the pulse oximeter would be most helpful in concert with the accelerometer, as described in the article.

Re: How on-the-wrist sleep apnea detection works

#100
post #96

Earlier quoted context omitted.

You want to at least give a brief overview as to why I should trust medical advice from a book written before germ theory was widely accepted? This has all the hallmarks of quackery.

> why I should trust medical advice from a book written before germ theory was widely accepted? Why do you think how to live healthy is a modern invention? Don't you think people had to figure that out ages ago, or else we wouldn't be here?

Because medical science was in its infancy in 1870 and you should only trust medical advice from then if it is obvious, like don't light yourself on fire, or it has been substantiated and backed up with peer reviewed science at some point in the last 150 years.

Your argument is just a mix of the appeal to nature fallacy and noble savage trope that people use to justify all sorts of medical treatments with no proven benefits.

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