Equations Flashcards
What is the equation of oxygen delivery
D02= CO x CaO2 (1.34xHbxSa02) + (0.003 x Pa02)
Poiseuilles equation
Delta P= 8uLQ/ pie r to the power of 4
La place
P= 2T/R
A-a gradient
PA02= (PB-Ph20) *Fi02 -(PaC02/RQ)
Shortened to
PA02= 150-(PaC02/0.8)
Equation for BP
BP= CO x SVR
Equation for MAP
MAP= DAP + (SAP-DAP)/3
Henry’s Law
V= S x P
Boyles Law
V1P1= V2P2
Ficks Law
J= k (c1-c2)
Where K= DxAxP/T
PPV equation
PPV (%)= 100 x (PPmax-PPmin)/ (PPmax + PPmin)/2)
Free water deficit
BW (kg) x {[Current Na/Normal NA] -1} x 0.6
= free water deficit in Litres
What is the calculation for compliance?
C= deltaV / delta P
Equation of motion
Pvent + pmuscles= elastance x volume + resistance x flow
What is the equation for fractional shortening?
FS (%) = LVIDd-LVIDs/ LVIDd x100
What is the equation for ejection fraction?
EF (%) = SV/ EDV x100