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OK, two nights "under my belt" and a leak rate that is virtually zero (a few spikes) and the IPAPmin set to 1.0. First night AI = .7, HI = 7.7, second night AI = 1.7, HI = 19.1.

Apneas under control and the hypopneas are still in the range of previous nights (widely dispersed) i.e. unchanged. With AI in a more desirable range, it is time to focus on the hypopneas.

I know I probably have hypopneas during the day, along with headaches (annoying but not constant or severe) and a tendency to want to sleep. Anybody for hypercapnia?

What to try next? Change IPAP? EPAP? IPAP to EPAP span? Something else?

Rogelah, did extending IPAP min (Ti min) help to reduce these RR figures:

rogelah wrote:I have a low or nil leak rate but RR is high, for example median is 21, 95% is 33 and max is 48

All three are about 5 points lower. The graphs in the review show a curve with all but one or two spikes closely around a median of 16.

Then last night happened. I was awake until after midnight.

rogelah wrote:I have a follow-up in 2 weeks with the doctor (sleep specialist). At that time I will decide if he needs to call for backup. It is a large teaching and research facility with another similar facility in another state. Some of the abstracts I have read are by physicians at the sister facility.

Call for backup, Rogelah. Get the big guns blaring on this problem...