(12-29-2012, 06:21 PM)roady666 Wrote: Advice on Pressures:-
I live in the UK, I see the sleep clinic once per year to have the machine checked and a short chat with a nurse. My pressures have not been adjusted since I got this machine 3 years ago.
Only just discovered (from this board) how to gain access to the clinician's menu. I'm looking at obtaining a smart card reader. In the mean time.
cpap pressure 6 - 15
30 Day readings
Leak .4 l/s
This past couple of years I tend to have broken sleep wakening briefly maybe 2 or 3 times a night can't pin down why! Don't feel I have as much energy as I used to have.
After reading a number of posts I'm wondering if I should try adjusting the settings?
If your machine is set to 6-15 cm. H2O that is close to wide open. Most people find that narrowing it to a range of 5 or 6 works better.
Also, if your AHI averages 11, you need some kind of adjustment, and that probably means a higher bottom pressure. However, it looks like most of your events are hypopneas rather than obstructive apneas, and hypopneas are not as detrimental.
Does your machine indicate what range the machine ran over the course of a night? If it gives you figures for a night of, say, starting at 6 and peaking at 12, then, for at least that night, having the upper limit higher than 12 was unnecessary. Look at every day and take note of the highest pressure it got to. Then set your maximum a bit higher.
Once you know the maximum it gets to, then you know for sure that such a pressure will not harm you, so you can safely increment the lower pressure. I'd start by raising the lower pressure by just 1 cm. H2O and leave it at that for at least a couple weeks to see the trend. If your overall AHI goes down, consider increasing by another 1 cm. H2O, and so on every couple of weeks.
Above all, be scientific. Don't make two or three changes at once, because even if you get better results, you won't know which change made the difference. Make just ONE change and leave it for a couple of weeks to see what trend develops.