How do you know when you should start bagging your pt with an ETT? I read something saying disconnecting the pt from the vent should be a very last resort because then they lose the recruitment from the vent (someone please explain this to me, what does that even mean?) but if your kids sats are sitting in the 40s and they aren’t coming up with going up on their fio2, how long do you wait/how do you know to bag? Also with cardiac kiddos, you don’t want to automatically increase their oxygen first, right? Cause then their lungs steal blood flow? I’m confused ?