Get to sleep ok, sleep through the night (I can recall dreams), awake to urinate, then defecate, then go back to sleep, awake a second time but with a gradual surge of adrenalin (and/or cortisol) which produces anxiety and high blood pressure. Once I'm up, both the surge and BP gradually reduces.
I read that when Sp02 drops too low for an extended period, an adrenaline burst will occur and cause hypertension, for one.
I have a deviated septum, cannot always breathe through my nose at night and have not been able to use my BIPAP machine without much discomfort as it forces me to breathe through my mouth which I posted on here
(SORRY, I ONLY HAVE TWO POSTS AND THEY WON'T LET ME POST LINKS YET, SO YOU WILL HAVE TO COPY, PASTE & ADD THE WWW.)
The chin strap works by keeping my mouth closed during sleep, however, if I can't breathe through my nose, it defeat the purpose of using the machine. I plan on getting surgery done soon for this. In the meantime, I try sleeping on my sides.
My non-BIPAP readings. Looks like I improved somewhat which could be from weight loss:
May 26, 2013 oximeter report:
July 28, 2014 oximeter report: