Kids can't tell you when something is wrong.
It is helping these critically ill children and their families navigate a scary and distressing time in their lives, sitting with them, and helping them to understand the many unfamiliar circumstances they suddenly face.
Di Nardo M, David P, Stoppa F et al.
If I use the bathroom once I am lucky.
The pressure in inspiration multiplied by the relative amount of time spent in inspiration added to the pressure in expiration multiplied by the relative amount of time spent in expiration.
You need to explain things to the child.