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What is the cpt code for transcutaneous oxygen and pco2 measurements?
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∙ 11y ago
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Exchange of gases in the lungs?
blood entering the lungs has a partial pressure of oxygen (PO2) of 40 mmHg and a partial pressure of carbon dioxide (PCO2) of 46 mmHg; alveoli, on the other hand, have a PO2 of 105 mmHg and a PCO2 of 40 mmHg. As the blood moves past the alveoli, oxygen and carbon dioxide will diffuse down their respective partial pressure gradients. Oxygen will move from the alveolar space (PO2 of 105 mmHg) to the blood stream (PO2 of 40 mmHg). Carbon dioxide will move from the blood (PCO2 of 46 mmHg) to the alveolar space (PCO2 of 40 mmHg). As the blood leaves the alveolus, the PO2 and PCO2 will have essentially equilibrated with the alveolar air.
Is Alveolar PCO2 identical to atmospheric PCO2?
No, it is higher or the CO2 would not move out of the lungs.
What to happens to breathing rate during jumping jacks?
Increases due to greater oxygen demands and a rising blood CO2 concentration (PCO2).
What factors affect the release of oxygen from oxyhemoglobin?
-Decreased pH -Increased Temperature -Increased Pco2
What regulates activities?
pco2
The relative PO2 and PCO2 in pulmonary arteries and veins and systemic arteries and veins?
Pulmonary artery/Systemic veins PCO2 = 45 PO2 = 40 Pulmonary vein/Systemic arteries PCO2 = 40 PO2 = 100
When PCO2 declines bronchioles?
constrict
What type of membrane used in po2 and pco2 electrode?
Teflon is used for the membrane of pco2 electrodes as it allows for the diffusion of co2 but not ions.
What are the units for pCO2?
mm Hg (mercury)
What gas is the major regulator of respiration?
PCO2
What is the normal range of PCO2 in kPa?
5.3
What is the effect of pCO2 on oxygen transport?
This is called the Bohr effect where a increase in pC02 which decrease the pH leads to a decreased affinity of hemoglobin to oxygen. This means that hemoglobin unloads oxygen in areas where pC02 is high e.g. active tissue and that the binding coefficient of hemoglobin is highest in the lung where pC02 is negligible.
