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Why Sleep Apnea Patients Rely on a CPAP Machine Hacker

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Re: Why Sleep Apnea Patients Rely on a CPAP Machine Hacker

#51

My wife (oral surgeon) says the only real solution to sleep apnea is surgery. CPAP machines to her and bunk. I believe she moves the jaw forward to help open up the airway. Whatever works I guess.

If all you have is a hammer... CPAP machines are the standard treatment, because they are cheap (compared to most other treatments for chronic diseases) and fully effective for most (but not all) patients.

There are few treatments with better cost/effect ratios.

Re: Why Sleep Apnea Patients Rely on a CPAP Machine Hacker

#52

One way around this is to get a bed that has something like a zero gravity mode. Sleep a bit upright and your airway won't collapse in on itself. I don't need CPAPS yet, but if a CPAP alone isn't working for you, you can try this combined with CPAP or just using the bed itself.

My understanding is that sleeping on one's side (rather than back) can make a big difference too.

Re: Why Sleep Apnea Patients Rely on a CPAP Machine Hacker

#53

Earlier quoted context omitted.

That means the machine has an airtight mask and could in principle suffocate you if it malfunctions. Ummm... no. If the CPAP machine fails, you'll just start sucking air in the holes that are normally used to expel your exhalations. (When you exhale, the air goes out through these vents, not back into the machine.) It's significantly less airflow, and will cause you to wake up, but it's not going to suffocate you.

But isn't the point of sleep apnea that the lack of air does not wake you up?

[deleted]

Re: Why Sleep Apnea Patients Rely on a CPAP Machine Hacker

#54

My wife (oral surgeon) says the only real solution to sleep apnea is surgery. CPAP machines to her and bunk. I believe she moves the jaw forward to help open up the airway. Whatever works I guess.

Sounds like your wife isn't well read on the topic.

CPAP is life saving treatment for some. Sleep apnea surgeries have poor success rates https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3480570/

Re: Why Sleep Apnea Patients Rely on a CPAP Machine Hacker

#55

Earlier quoted context omitted.

That means the machine has an airtight mask and could in principle suffocate you if it malfunctions. Ummm... no. If the CPAP machine fails, you'll just start sucking air in the holes that are normally used to expel your exhalations. (When you exhale, the air goes out through these vents, not back into the machine.) It's significantly less airflow, and will cause you to wake up, but it's not going to suffocate you.

But isn't the point of sleep apnea that the lack of air does not wake you up?

No, the point is that your brain initiates an "emergency procedure", so to speak, when oxygen levels in the blood get too low. This results in a few very quick, gasping breaths and lots and lots of physiological stress, including heightened blood pressure.

If lack of air not making you wake up was the problem, patients would die long before seeing a doctor.

Re: Why Sleep Apnea Patients Rely on a CPAP Machine Hacker

#56

Earlier quoted context omitted.

I've slept long into a power outage and woken up with a headache and significant disorientation and my mask still on. Really upsetting. And with an AHI off the charts, I may very well die without one.

Might be worth investing in an Uninterruptible Power Supply for it if you haven't already.

Such an obvious answer that eluded me for some reason... Thanks for the suggestion.

Re: Why Sleep Apnea Patients Rely on a CPAP Machine Hacker

#57

One way around this is to get a bed that has something like a zero gravity mode. Sleep a bit upright and your airway won't collapse in on itself. I don't need CPAPS yet, but if a CPAP alone isn't working for you, you can try this combined with CPAP or just using the bed itself.

And at the risk of being down voted, weight loss: https://www.health.harvard.edu/blog/weight-loss-breathing-de...

Re: Why Sleep Apnea Patients Rely on a CPAP Machine Hacker

#58
post #29

What other device hacking subcultures exist for medical devices?

There is OpenAPS, the Open Artificial Pancreas. They are connecting commercially available insulin pumps and glucose monitors with open source software to auto regulate blood sugar in folks with diabetes. https://openaps.org.

There are also folks making implants, LED lights and rfid tags and such. https://en.m.wikipedia.org/wiki/Grindhouse_Wetware

Re: Why Sleep Apnea Patients Rely on a CPAP Machine Hacker

#59

In the past, the CPAP machines my wife and I used needed to be programmed in various ways, and they had separate data cards as described. The ones we got a couple of months ago are completely dynamic, they aren't pre-configured in any meaningful way. Also, they send their collected data up to 'the cloud' over a cellular network, where we can view the data, in some detail, with our web browser, as authenticated by a c…

I keep my CPAP in airplane mode because I have no idea how they protect the data or the protocols used to adjust the settings remotely. Based on what I know about every other IoT device, the manufacturer almost certainly knows nothing about computer security.

This annoys my doctor because it means she has to read the SD card rather than pulling my data out of the air, but I explained to her that I knew as much about computer security as she did about respiratory medicine, and if she knew what I knew she'd be horrified.

Re: Why Sleep Apnea Patients Rely on a CPAP Machine Hacker

#60
post #3

I think the risk of death is probably overstated, as these people have often gone decades without a CPAP, and lived just fine.

Maybe a badly configured CPAP machine is worse than nothing at all? The article says the data they collect include something called "mask leak rates". That means the machine has an airtight mask and could in principle suffocate you if it malfunctions.

Not sure what exactly "mask leak rate" means, but I know you want the device to form an airtight seal with your face so it's not blowing out the sides of the mask. The mask as a whole has small ventilation holes, however.
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