Some observations, data, and questions.
1) The seal indicator on his Resmed AirSense seems to be very generous. On the display in the morning, it regularly says that he has no leakage problems but looking at the data that is clearly not the case.
I will tighten up his masks and chin strap a bit. (any advice on tightening other than until the leaks stop but not too tight?)
2) Does the display refer to just the recent past or is it reflecting the entire night?
3) It appears that his Apnea is clearly not well treated. See data below.
This first graph is an example of a relatively good night w.r.t. AHI It is a full night in the standard chart view
4) This is an advanced view of a close-up of CA events.
5) I have other closeups of H, RE, and UA events. All of the events look the same to me. I can post them that are of interest.
6) This is a typical day with high AHI
7) Given how poorly treated his apnea is, I'm wondering if I should be disappointed in his doctor for not following up closer. The durable medical equipment supplier is the only one to follow up and that has been about paperwork and once to remind him to wear his CPAP. Thoughts?
P.S. As someone said 90 years is a good run. He has been a maker and a doer all of his life and does seem to be interested. I think it is and net-positive and it gives him and me a project.
Thanks in advance for any advice.