Thread by @Loki_bandana

nak setting bipap based on abg ni senang je
1) abg show PaO2 < 60 (pt hypoxemic) means ada oxygenation problem
2) abg show low pH with high PaCO2 >45 means ada ventilatory problem

bipap ada dua setting
Ipap
Epap (sama macam PEEP) pressure nk maintain alveolar keep on opening during expiration.
Pressure support = Ipap - Epap

kalau ada oxygenation problem, increasekan Epap,n maintain kan pressure support.
contoh: kalau inital setting Epap 5
Ipap 10 (PS 5) so kalau kena increasekan Epap to 10, naikkan Ipap jadi 15

kalau ventilation problem, kena increasekan Pressure Support to drive out CO2. so just naikkan Ipap Contoh: initially Epap 5, Ipap 10. so
Pressure support= 10-5 =5
so nak naikkan PS to 10, increasekan Ipap to 15
now PS= 15 (Ipap) - 5 (Epap)= 10

in short
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