Important Equations Flashcards
1
Q
What is Dalton’s law and equation?
A
Pressure exerted by mixture of gases is independent of each gas
P(total) = ppA + ppB …..
2
Q
What is Boyles law and equation?
A
Pressure is inversely proportional to Volume
P1 x V1 = P2 x V2
3
Q
What is Henry’s law and equation?
A
Volume of gas dissolves in liquid depends on partial pressure of gas and solubility of it
Conc gradient = solubility coefficient x pp
4
Q
What is Ohms law?
A
Pressure (V) = flow (I) x resistance (R)
5
Q
What is the alveolar gas equation?
A
PAO2 = PiO2 - PaCO2/R
Alveolar ppO2 = inspired O2 - (arterial CO2)/resp coefficient-0.8
6
Q
What is the respiratory coefficient?
A
0.8
7
Q
What is Laplace’s law and equation?
A
Alveolar pressure depends on surface tension and radius
Pressure = 2T (tension) / r (radius)
