If the lungs can't expand, then atelectasis will occur. It depends on the pt. as to how clinically significant that atelectasis will be. ie. is there pulmonary edema, pain, obeseity,
A third degree heart block is when the P waves are at regular intervals of each other and the QRS are at regular intervals with each other, but the P waves and QRS are not in sync with each other....
Peak Inspiratory Pressure(PIP) is a combination of the driving pressure and plateau Pressure. Plateau pressure reading includes PEEP, but not the driving pressure required to deliver the breath....