How bad is "severe?"

Finally got a hold of the write-up for my sleep study...

Lowest O2 saturation: 74%
42% of the time spent below 90%

AHI 66%,
REM AHI 12.6 /h
Arousal Index 51.3

My numbers on the S9 alternate between 1-2 and between 8-10 depending on if I remember NOT to sleep on my back.

So... how bad was it before?

SleepyTiger

If you are asking the definition, "severe" is AHI of 30 or more.

How "bad" it is depends on how well your therapy controls it. My study showed 96AHI. However, with CPAP I rarely go over 1.5 and average about .5. Most of my symptoms have subsided and life is pretty much normal. So even tho my OSA is "severe", I don't consider it "bad".

I think a couple of things need to be separated here - the fact that your 02 sats were low for most of your test is one thing (and not very good, unfortunately), but the number of times you stop breathing at night can be quite high - and considered 'severe' in terms of a positive test - without your having had low sats throughout, so "severity" as doctors call it usually applies to number of events, but not necessarily low 02 sats, which is a different, if obviously connected, thing altogether.