you have been fine (and they will read this
, so no worries.
so what are some of the terms:
CPAP is used generically, but really means fixed pressure all the time, maybe some exhale relief (more on that later)
APAP is auto you give it a range like 4-16 and it will start at 4 and if it detects apneas the machine will increase the pressure trying to get the apneas to stop
. once they have stopped for a while the machine will back down the pressure. This goes on through out the night
flex is for philips machines and presents a different "feel' to breathing. you can try any of these settings and see if you like one better (comfort settings)
some people have a problem exhaling into pressure, so Resmed has EPR (Exhale Pressure Relief) that drops the pressure during exhale by 1,2, or 3 cm of water. the Philips flex does much the same thing. this is a comfort thing
if the low side pressure (the 4 of a range of 4-16) is too low it may cause problems. You may feel like you are not getting enough air or it will take longer to stop apneas once they start up. The pressure increases in steps, so the farther away you start the more steps it takes to get to the right pressure.
The apneas do not happen real fast. Things have physically move. So when the exhale pressure drops things only just barely start to move, before the pressure goes back up. In other words this is not a problem . again comfort
ramp- lots of talk about this, personally I use it. Others say it delays treatment. If I don't have any apneas during ramp, well then I don't need treatment right then. Ramp is a comfort thing, it starts the machine out at a lower pressure and over a selected amount of time will "ramp" the pressure up to you starting pressure (the 4 of the 4-20)
the name of the game. stop apneas and sleep. so sometimes having too high of a pressure (say 15 fixed) may be disruptive to your sleep, not letting you get "good" sleep. Some people find pressure changes disruptive and do better with a fixed pressure. This is all trial and error, try it and if you like it keep it, if not try something else. All the while watching you AHI numbers.
personally I would change it to auto, set it for 5 or 6 - 16 and see what happens. You will not cause damage. the low end number you can get a pretty good idea about if you put the mask on with pressure during the day. lay down and read a book or watch TV, are you breathing comfortably? getting enough air? can you relax? find your starting number.
If you can't sleep with this starting number, enable ramp and have that start at a lower number that helps you fall asleep
The machine will find you high number, most people like to set it at 2 cm higher than your max number from the reports.
Big things is to get some data and post the plots. look at sleepriders signature in his posts and you will find links to how to post good plots and what we need to see. the plots you posted are missing some important plots like pressure.
hang in there, keep posting, learn, get used to it, try one thing at a time, give yourself some time to get used to it (unless you know right away that you need to change it), nothing happens fast with sleep apnea-you will be fine while we work it out