Diary of a new hoser

Used pressures (Average) :
Average pressure : 4.2 cmH2O
Low pressure : 4.0 cmH2O
High pressure : 6.0 cmH2O
Pressure efficient more than 90% of time :5.0 cmH2O

Events :
Number Apneas : 47
Index/h Apneas : 0.4
Number Apneas/CA : 37
Index/h Apneas/CA : 0.3
Number Hypopneas : 51
Index/h Hypopneas : 0.5
Number Acoustical Vib. : 36
Index/h Acoustical Vib. : 0.3
Number Runs (FL): 615
Index/h Runs (FL): 5.8

That's an AHI of only 1.2 (.4+.3+.5). There's definitely no reason to turn IFL1 or IFL2 off. You would turn them off if you were "over-triggering" with runaway pressures (which you're not), or if you were triggering with a reasonable pressure-response (toward detected flow limitations as IFL1 or concomitant hypopnea+flow-limitations as IFL2) yet subjectively felt the pressure in response to these events disturbed your sleep (as some UARS patients do). That data's excellent.

The only possible white flag would be the pressure discrepency between the 420e's high pressure of 6.0 and your PSG's titrated pressure of 8.0. That night in the sleep lab might not have been representative, however. If you sleep and feel well, subjectively speaking, the 420e is doing a superb job. There is a slight chance the 420e is missing some sleep-event detection, but let's not think or worry about off chances if you sleep and feel well. Like I said, that data is great. You could really be the poster child for the 420e with that data!

-SWS

Hi SWS,

Thanks! I'm feeling much, much better! I hadn't even realized that I had been a zombie for years until I started using the autopap 2 weeks ago. .

Perhaps the sleep study titered an 8 while I was sleeping on my back? I now sleep on my side; the diagnosis was "severe supine related sleep apnea ..."

BTW, I think there are other reasons why I wouldn't make a good poster child.


--Bob

-SWS wrote:

Used pressures (Average) :
<snip>
That's an AHI of only 1.2 (.4+.3+.5). <snip> That data's excellent.

The only possible white flag would be the pressure discrepency between the 420e's high pressure of 6.0 and your PSG's titrated pressure of 8.0. That night in the sleep lab might not have been representative, however. If you sleep and feel well, subjectively speaking, the 420e is doing a superb job. There is a slight chance the 420e is missing some sleep-event detection, but let's not think or worry about off chances if you sleep and feel well. Like I said, that data is great. You could really be the poster child for the 420e with that data!

-SWS

Perhaps the sleep study titered an 8 while I was sleeping on my back? I now sleep on my side; the diagnosis was "severe supine related sleep apnea ..."

Bingo! That explains the discrepency beautifully!