I think this got posted in the wrong place actually, its an engineering doubt and not pregnancy related. Sorry for the confusion. If anyone knows the answer still feel free to reply.
I am not very sure what you mean by air standard cycles, dear. If you are asking about your monthly cycles or breathing, please stay calm and take care.
This sounds like a very technical medical term or maybe a typo! I suggest asking your gynac or the hospital staff during your next visit so they can explain it clearly.
If this is about breathing cycles or oxygen flow during workouts, always make sure you are doing it slowly. Don't strain your body and only do pre-natal breathing exercises if your doctor has allowed it.
Wait, is this some new test or term I should know about? I'm in my 2nd trimester and this is making me a bit anxious. Has anyone else's doctor mentioned this to them?