Nava functions as a mode of mechanical Ventilation , explain Pav , APRV

Explain how NAVA functions as a mode of mechanical ventilation, what are its trigger, limits and control variables?
Explain PAV as a mode of mechanical ventilation.
Will either of these modes be the future of mechanical ventilation, justify your response?
Explain APRV as a mode of mechanical ventilation, does your hospital use this mode, how do you set Phigh, Plow, Thigh, Tlow?
How is Pes, Ppl and PL calculated/measured?
What perspective value does knowing these values provide for patient care?
Create your own question based upon the readings that you would like to pose to your fellow classmates which demonstrates you did more than simply skim the articles provided.