(11-13-2014, 07:47 PM)Dolla Bill Wrote: Like this? Here is a detail of last night, the night in question.
Hi Dolla Bill,
The amount of leaking is minor. Looks like most of the AHI was made up of central (Clear Airway) apneas when there was little or no leaking. The low Leak means the machine is more likely to be accurately reporting what was occurring.
Take a close, zoomed-in look at the Flow graph. I think it is in Tools/Options that you can adjust the scales for the Detailed Data. It would be good to adjust the scale on the Flow to be more zoomed in, like perhaps -80 to +80. This will make it much easier to see what the Flow is doing.
And on the time scale also, zoom in around 4:00 or 5:15 so that 10 minutes fills the entire horizontal axis. 4:00 and 5:15 are times are when there are dense clusters of Central Apneas. (The event flag candlestick tops will be clear/white on the CA apneas, and will be solid red on the obstructive apneas.)
Consumption of alcohol or use of prescription meds can strongly increase the number of central apneas we get. Sometimes high pressures tend to cause central apneas or Periodic Breathing to occur.
All the apneas are short, less than 20 seconds. I wouldn't be overly-worried about the dense clusters of CA, since this doesn't happen very often. All the same, I would think these clusters would have been hugely disruptive to sleep and that you will want to make changes to reduce the likelihood of this happening again.
With some people, higher Pressure may cause Central Apneas. Would be interesting to see what the Pressure graph was like when those clusters were occurring. If you find that the clusters of Central Apneas occurred mostly during or shortly after the pressure had been unusually high, keeping off your back would likely help avoid the CA clusters, because keeping off our back usually lowers how high the pressure needs to go to avoid Obstructive Apneas.