Ventilation
What is normal VA Alveolar ventilation for an adult
4 l/min
What is the symbol used for perfusion
Q
What does PAO2 stand for
Partial Pressure of Oxygen
What are the two types of V/Q mismatches
Shunt and Dead space
What is the mechanism that allows gas exchange to occur at the alveoli
Diffusion
What does FiO2 stand for
Fractional inspired oxygen
21%
True or False
Pneumonia or pulmonary edema is a shunt because there is fluid in the lungs preventing the oxygen from reaching the available blood flow
True
Perfusion with compromised ventilation
When the alveoli is receiving blood flow but not getting adequate, what kind of V/Q mismatch is this?
Perfusion without ventilation = Shunt
What does PACO2 stand for
Partial Pressure of Alveolar CO2
Ventilation/Perfusion ration is the ration between the amount of air brought into the alveoli and the amount of this, flowing past the alveoli
Blood
Perfusion without ventilation causes what hemodynamically
Oxygen levels in blood and breathing rate
Hypox-emia and Hyper-capnia
What happens to CO2 levels when there is ventilation without perfusion
CO2 increases
Structures that do not participate in gas exchange are called this kind of dead space
Anatomical
Pulmonary embolism (blood clot) is what kind of V/Q Mismatch
Dead Space
Ventilation without perfusion
What causes flow to occur