Machine Calculations Flashcards
Boyles Law
Temp constant
PV=T
Charles Law
P is constant
PV=T
Gay-Lussacs Law
Volume is constant
PV=T
Compliance
change in volume/change in pressure
I:E time
Inspiratory time + expiratory time= total time
Inspiratory volume when vent doesn’t decouple (X)
I:E x FGF(mL)
Volume added to MV d/t FGF (Y)
(I:E x FGF)XRR=Y
Total MV when vent doesn’t compensate for FGF
[(I:E x FGF) x RR] + Set MV
TV when Vent doesn’t compensate for compliance
TV-(PIPxcompliance)
MV when Vent doesn’t compensate for FGF or compliance
MV+{TV+[(I:ExFGF)xRR]} - [TVx (PIPxcompliance)xRR]
F to C
1.8C+32
FiO2
(Total O2 concentration/total liter flow)-anesthetic gas
service pressure O2
2000psi for 660L
Service pressure for air
2000 psi for 625L
Service pressure for N2O
745 psi for 1590L