Well, you were scheduled for surgery on the 29th....
This might be a moot point now, but heres me two pieces of 'eight....(see avatar to understand that one...)
I got diagnosed with severe sleep apnea after my band surgeon ordered the sleep study. I had no freakin idea that was happening to me, and what it causes the body to do. It isn't just to help you sleep, it is to help your bodys organs regenerate...you can read all about it on the 'net..If they say you need it go get it.
I opted for the full face one, I couldn't take the nasal one, and I sleep like Rumplestiltskin now...feel fantastic all day long, metabolism increased, no more dozing off when behind boring drivers (just kiddin' there, but it CAN happen)...
Anyhow, turned out was having 53 apneas per hour, each one lasting between 16 and 25 seconds. Yeah, lotta great sleep there. I am used to telling things blunt, so..if the doc orders it, go get it ...