Oartial Pressure Respiratory System PLease show calculations Respiratory System:

Question

Oartial Pressure Respiratory System PLease show calculations

Respiratory System:Partial Pressures At the summit of Mt. Everest, the altitude is 8848 m. At this altitude, the total atmospheric pressure is 253 mmHg. Calculate the partial pressures for nitrogen and oxygen in this air (assume it is not humidified) PN2 P02- Now calculate the partial pressure of 02 in the lungs (as a result of P02- In comparison to lower altitudes, how would this altitude affect the partial pressure of oxygen in the... a. alveoli? b. arterial blood? How would this partial pressure difference affect the magnitude of the gradient for diffusion of oxygen from the blood into the tissues? Given this change in the partial pressure gradient, how would the lungs attempt to compensate for this condition? How would this compensation affect alveolar PO2 and PCO2? How would the alveolar partial pressure changes affect the P02 and PCO2 of the blood? What is a major negative side effect of the lungs' compensation to high altitude?

Explanation / Answer

Partial pressure is given as

For nitrogen :

percentage in air present = 78%

PN2 = 78% Ptotal = 0.78 (253) = 197.34 mmHg

For oxygen :

percentage in air present = 21%

Po2 = 21% Ptotal = 0.21 (253) = 53.13 mmHg

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