1) abg show PaO2 < 60 (pt hypoxemic) means ada oxygenation problem
2) abg show low pH with high PaCO2 >45 means ada ventilatory problem
Ipap
Epap (sama macam PEEP) pressure nk maintain alveolar keep on opening during expiration.
Pressure support = Ipap - Epap
contoh: kalau inital setting Epap 5
Ipap 10 (PS 5) so kalau kena increasekan Epap to 10, naikkan Ipap jadi 15
Pressure support= 10-5 =5
so nak naikkan PS to 10, increasekan Ipap to 15
now PS= 15 (Ipap) - 5 (Epap)= 10
to improve oxygenation (PaO2) naikkan epap
to improve ventilation (to wash out PaCO2) increasekan pressure support by means of increasing the Ipap
PS = Ipap - Epap