I am going through the menopause at the moment and as a result having hot flushes,particularly at night my husband has set up a small fan in our bedroom ( you don't really need to know all this ,but just setting the scene)
My oxygen levels at night are never more than 93% and have gone down as low as 82% at one time ,measured on my pulse meter. Since I've had the fan in the bedroom ( 2 weeks ) my oxygen level is at 98 - 99%. I am sleeping and feeling much better and not snoring at all -not that I knew I did ,this is just hubby saying that we often have a jumbo jet in our room. I used to wake with a start after stopping breathing which would often bring on AF. and other arrhythmias.
I cannot say whether it would help stop an episode of AF ,flutter,tachycardia as I have had an ablation which seems to have cured it but I know in my case that sleep problems ,probably sleep apnoea brought it on.
Just thought I'd share this with you ,might help somebody. I hope it does .