The xPAPs we use as folks with sleep apnea do not in any way breathe for you.
BiPAP (and all the other exhale/inhale pressure relief) detect either when you start breathing in or when you start breathing out, depending on the algorithm. I think. LOL
What it does, basically, is it senses when you are starting to end the inhale and it drops the pressure when you start the exhale. Then it detects when you are going to inhale and it increases the pressure.
Regardless, like I have said, if you are concerned you have mixed apnea, then you need to see the doc. If no central events happened during the sleep test, then you don't have a problem. My bet is on it all calming down as your continue your therapy. But you have to do whatever you need to be comfortable. Which is why talking to your doc would be a good thing.
Apnea Board Moderator
Breathe deeply and count to zen.
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Note I also had headaches after first starting CPAP. After 2.5 months on CPAP and BiPAP and little success I am now on ASV with AHI of 0.5. I had little trouble adjusting to it, though it is a bit wierd at times when it bumps up the pressure. It does not wake me, I only notice when falling asleep.
Do you know what the composition of your apneas was on your initial sleep study? (obstructive vs central vs hypopnea) If all obstructive, from my understanding it is more likely the centrals/hyps will go away. If you had alot of centrals or hypopneas then don't be surprised if they do not and make sure the doctor knows if your therapy is unsatisfactory.