Sleep Apnoea

Hurrah, after eighteen months of asking and three separate referrals, I have, at last, actually got a referral to a Sleep Apnoea clinic.

Each time I have answered the questionnaire about my sleep (and falling asleep at all times during the day),, I have scored extremely high. Definitely suffering from this condition, but each time I got referred, local Health Authority refused me 'on account of my BMI being over 30'.
Nowhere on NICE is this mentioned (except to say that people with a BMI over 30 are more likely to have this condition.
I did lose a good amount of weight after the first refusal, but for me to be under 30 BMI is to be far to too thin. I am around 31 or 32 on this very silly, outdated method of deciding if someone is obese, etc.

Lovely Practice Nurse at my GP surgery refused to accept last refusal and fought it, with help from my current GP there, and I have now been accepted and should be able to attend a clinic in the next month or so.

Anybody tell me exactly what I can expect at that clinic, am I expected to sleep there or what? Just be so glad when I can actually get a properly medically advised CPAP machine. Hopefully, then I can get a proper nights sleep and not keep falling asleep during the day.

My normal life is so impacted by this need for sleep during the day. I have fallen asleep in the middle of meetings, sitting round a table at a committee meeting, etc. I have to time-table into each day the need for a good hours sleep early afternoon and directly after my tea in early evening. No matter how hard I fight it, I will just fall asleep at these times, anywhere, in the middle of doing puzzles - pen in hand, etc.
My breathing problems are causing me to have panic attacks during night, and even in the shower as the water comes over my head.
When will this so outdated BMI be done away with. Surely, there must be much more accurate, more modern ways of determining how far people are overweight, etc.