What mechanisms regulate CO2? 1. Being in an aerobic state
2. Blood flow to lungs
3. Proper diffusion
4. appropriate minute ventilation
PaCO2 for hypoventilation Above 45 mmHg
PaCO2 for hyperventilation 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 0.08
Will the PaCO2 or ETCO2 be higher? and by how much? PaCO2 will always be higher
by 3-5 mmHg.
How much faster does CO2 diffuse than O2? CO2 diffuses at a rate 20x faster than O2
, Flight Paramedic Questions And Answers
PAO2 Partial Pressure of oxygen in the alveoli
PaO2 partial pressure of oxygen in the arterial system
SaO2 Amount of oxygen saturated on hemoglobin
Oxygen/hemoglobin disassociation curve- Right shift Less Hb-O2 affinity. Give oxygen
to the tissue. Everything raises(H+, CO2, PaO2, temp, 2,3 BPG).
Ex. athletes that train at high altitudes will have a lower SpO2 and higher than normal PaO2.
oxygen-hemoglobin dissociation curve- Left shift More Hb-O2 affinity. Tissue is left
behind. Everything drops (H+, CO2, PaO2, temp, 2,3BPG)
Ex. metabolic alkalosis, hypothermia, and massive transfusions of PRBC's.
What is 2,3DPG? (The crowbar) A molecule responsible for releasing O2 from the Hgb.
Graham's Law Diffusion will happen faster if the gas is thinner and slower if the gas is
thicker.