I’ve always had issues where I’ll stop breathing in the middle of the night, but I don’t snore. Sometimes I wake up gasping for air. I’ve suspected central sleep apnea for a long time.
Several years ago I had an in-home sleep study, where they hooked up an SpO2 meter to me and recorded it overnight. There were a number of drops throughout the night, indicative of apnea in general, and as a result I was provided a CPAP machine (on the assumption that it was obstructive, rather than central, apnea).
The CPAP machine didn’t really help much (if at all) and I kept trying to make it work over the next few years. Then due to a change in insurance I needed to get another study to get authorized for continuing the prescription, and they said that the CPAP machine wasn’t helpful for whatever my sleep issue was. I ended up selling it on the used market.
But I was still having apnea issues, and a lack of restful sleep.
Over the past few weeks it’s gotten especially bad, and after someone was evangelizing the Oura ring, I looked into continuous monitoring solutions. I’ve had a cheap finger monitor for years, which has been helpful for spot-checking but is uncomfortable to wear to bed, and also doesn’t record a log, making it less useful for diagnosing issues.
Oura is pretty expensive (and now requires a $6/month subscription plan) and doesn’t do continuous SpO2 monitoring (it only does momentary checks, similar to the current Apple Watch), but perusing other reviews and half-remembering a few videos I’d seen years ago, I eventually came across the Wellue O2ring, which is a continuous monitor which logs SpO2, heart rate, and movement all night long, and can also send a little vibration to your finger whenever the SpO2 drops below a configurable threshold.