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The alveolar air equation is: PAO2 = FiO2(Pb-47)-(PaCO2/R) where: PAO2 is the partial pressure of oxygen in alveoar gas; FiO2 is the fraction of inspired oxygen (on room air this would be 21%); Pb is the barometric pressure (at sea level this is 760 torr); 47 is the partial pressure of water vapor; PaCO2 is the partial pressure of carbon dioxide in blood; R is the V/Q mismatch, which is 0.8 unless stated otherwise So, if a person is breathing room air at sea level, their PaCO2 is in normal range (let's say 40mmHG, since normal is between 35-45mmHg), and their respiratory rate is 12: PAO2= .21(760-47)-(40/0.8); .21(713)-(50)= 149.73-50=99.73 So the PAO2= 99.73mmHg
What else can I help you with?
What is an equation that contains a variable?
It is an equation. It could be an algebraic equation, or a trigonometric equation, a differential equation or whatever, but it is still an equation.
What is an equation that relates quantities represented by variables?
Simply that, an "equation".Simply that, an "equation".Simply that, an "equation".Simply that, an "equation".
Do you answer an equation?
you don't answer an equation, you solve an equation
What is the equation of a logarithmic equation?
A logarithmic equation would be any equation that includes the log function.
Can air preesure go down to negative numbers?
Yes, because PV=nRt From this equation it becomes apparent that air pressure, V, can be negative. Since negative temperatures can exist, such as -30C (remember you have to use Celsius and not Fahrenheit). Thus we have negative numbers for air pressure.
What keeps the surface between the air and the alveolar cells moist in the lung?
alveolar fluid
What is an alveolar dead space?
An alveolar dead space is the volume of air in the alveoli of the lungs which does not partake in gas exchange.
How does one calculate alveolar carbon dioxide partial pressure?
Alveolar carbon dioxide partial pressure can be calculated using the alveolar gas equation: PaCO2 = (Pb-PH2O) * FiCO2 - (PaCO2 / R), where PaCO2 is the alveolar partial pressure of carbon dioxide, Pb is barometric pressure, PH2O is water vapor pressure, FiCO2 is inspired fraction of CO2, and R is the respiratory quotient. This equation helps estimate the partial pressure of CO2 in the alveoli.
What is emphyzema?
Hyper inflation of air sacs with destruction of alveolar walls.
What is the function alveolar?
filter carbon dioxide from the air you breathe, to be exhaled.
Do the alveolar ducts absorb carbon dioxide?
No, alveolar ducts do not absorb carbon dioxide. Instead, the main function of alveolar ducts is to deliver oxygen from the air sacs to the bloodstream and remove carbon dioxide from the bloodstream into the air sacs for exhalation.
What is alveolar ventilation refers to?
Alveolar volume is lung capacity. Alveoli are the air sacs in the bronchioles. How much air the lungs hold during both inspiration and expiration is lung capacity which is alveolar volume. Hope this helps
Why CO2 is more in alveolar air than expired air?
Alveolar air mixes with air in the anatomic dead space on its way, which is rich in oxygen. hence % of oxygen is more in expired air. Thus though amount of CO2 does not decrease, percentage decreases as inspired air contains very less amount of CO2 (0.03%).
What is the formula for AA gradient?
PAO2 - PaO2 ****************************************** PAO2 is the Alveolar Air Equation: PAO2 = FiO2 (Pb- Ph20) - PACO2/R Notes: Pb = 760 mmHg Ph20 = 47 mmHg R = 0.8
Function of alveolar ducts?
Trap air in lungs (act as air pockets 4 gaseous exchange).
What is the structure of alveolar ducts?
it dissolves oxygen in the fluid and from there it can diffuse to the alveolar cells.It goes right back to evolution where single cells have to absorb oxygen from water.All of our cells systems ae aquatic.
What separates the air inside the alveoli from the blood?
Alveolar interstitial cell wall
