Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
11 Cards in this Set
- Front
- Back
|
Po2=barometric pressure x fraction of oxygen in dry gas
|
Enviromental Po2= 760 x .2093 = 159 mmHg
|
|
|
Inspired Po2=(barometric pressure- pressure of H2O) x fraction of oxygen in dry gas
|
Inspired Po2= (760-47) x .209 = 149 mmHg
|
|
|
Decrease elevation = increased inspired oxygen pressure
|
Sea level = 15 mmHg
|
|
|
Nitrogen = 78%
Oxygen = 21% |
Argon = .93%
CO2 = .033% |
|
|
Functional residual capacity = Expiratory reserve volume + Residual Volume
|
C1 x V1 = C2 (V1+V2)
|
|
|
Plethysmograph
|
P3V2 = P4 (V2 + ∆V)
P3 and P4 are before and after mouth pressures, V2 is FRC |
|
|
Two components of breath
|
V total = V(alveolar) + V(dead space)
|
|
|
Fowler's method
|
Inspiration of 100% O2, expiration of nitrogen levels. Determine dead space byArea A = Area B
|
|
|
Bohr's Equation
|
VD/VT= [PA(CO2) - PE(CO2)]/ PA(CO2)
|
|
|
VA = (Vco2 / Pco2) x K
|
meaning that if alveolar ventilation is doubled, the partial pressure of CO2 in the blood will be halved.
|
|
|
Fick's Law of Diffusion
|
Vgas proportional to A/T x D(coefficient) ( P1-P2)
D proportional to Sol/Sq root of MW |
