FLIGHT PARAMEDIC 2025 LATEST
UPDATE!!!
What is diffusion? - ANSWER Movement of molecules from high to low concentration
Where does gas exchange occur? - ANSWER alveolar-capillary membrane
4 Causes of poor diffusion at the alveolar-capillary membrane - ANSWER 1. Damage
(Atelectasis)
2. Covered with fluid(Pneumonia/ARDS)
3. Insufficient inflation(hypoventilation/poor inspiratory maneuvers)
4. overstretched(High Pplat)
Why do we need to ventilate properly? - ANSWER To regulate and maintain appropriate
amounts of CO2
Co2 regulation second by second - ANSWER Carbonic acid buffer system
What mechanisms produce CO2? - ANSWER Aerobic and anaerobic metabolism
What mechanisms regulate CO2? - ANSWER 1. Being in an aerobic state
2. Blood flow to lungs
3. Proper diffusion
4. appropriate minute ventilation
PaCO2 for hypoventilation - ANSWER Above 45 mmHg
PaCO2 for hyperventilation - ANSWER Less than 35 mmHg
For every change in CO2 by 10 mmHg, you will have a corresponding change in pH by
_____ in the opposite direction - ANSWER 0.08
Will the PaCO2 or ETCO2 be higher? and by how much? - ANSWER PaCO2 will
always be higher by 3-5 mmHg.
How much faster does CO2 diffuse than O2? - ANSWER CO2 diffuses at a rate 20x
faster than O2
PAO2 - ANSWER Partial Pressure of oxygen in the alveoli
PaO2 - ANSWER partial pressure of oxygen in the arterial system
SaO2 - ANSWER Amount of oxygen saturated on hemoglobin
UPDATE!!!
What is diffusion? - ANSWER Movement of molecules from high to low concentration
Where does gas exchange occur? - ANSWER alveolar-capillary membrane
4 Causes of poor diffusion at the alveolar-capillary membrane - ANSWER 1. Damage
(Atelectasis)
2. Covered with fluid(Pneumonia/ARDS)
3. Insufficient inflation(hypoventilation/poor inspiratory maneuvers)
4. overstretched(High Pplat)
Why do we need to ventilate properly? - ANSWER To regulate and maintain appropriate
amounts of CO2
Co2 regulation second by second - ANSWER Carbonic acid buffer system
What mechanisms produce CO2? - ANSWER Aerobic and anaerobic metabolism
What mechanisms regulate CO2? - ANSWER 1. Being in an aerobic state
2. Blood flow to lungs
3. Proper diffusion
4. appropriate minute ventilation
PaCO2 for hypoventilation - ANSWER Above 45 mmHg
PaCO2 for hyperventilation - ANSWER Less than 35 mmHg
For every change in CO2 by 10 mmHg, you will have a corresponding change in pH by
_____ in the opposite direction - ANSWER 0.08
Will the PaCO2 or ETCO2 be higher? and by how much? - ANSWER PaCO2 will
always be higher by 3-5 mmHg.
How much faster does CO2 diffuse than O2? - ANSWER CO2 diffuses at a rate 20x
faster than O2
PAO2 - ANSWER Partial Pressure of oxygen in the alveoli
PaO2 - ANSWER partial pressure of oxygen in the arterial system
SaO2 - ANSWER Amount of oxygen saturated on hemoglobin
