Ventilation-Perfusion Relationships Flashcards
(10 cards)
1
Q
O2 composition of HUMIDIFIED air is?
A
Pp=150 mmHg
2
Q
FiO2 is:
A
Fraction of inspired O2
3
Q
What is the respiratory quotient of Co2 production and O2 consumption
A
0.8
4
Q
What is the FiO2 in room air?
A
0.21
5
Q
PH2O (water vapor pressure)=
A
47 mmHg
6
Q
What is the partial pressure of alveolar oxygen air at sea level?
A
PAO2 = 99.73 mmHg
7
Q
? = [0.21 x (760-47)] - (PACO2/0.8)
A
PAO2
8
Q
Oxygen composition of Alveolar Air ?
A
100 mmHg
9
Q
What determines concentration O2 in the alveolar compartment ?
A
Ventilation (rate of O2 addition) and Perfusion (pump rate)
10
Q
Is gas exchange occurring at a V=1 and Q=0 ratio?
A
No
