Q. With regard to ascending to high altitudes: (Solved)
1. there is a linear decrease in inspired oxygen pressures with increasing altitude
2. the partial pressure of water vapour in moist inspired air decreases with PiO2
3. at 19,200m, barometric pressure = 47mmHg, PiO2 then is approx 9mmHg
4. at peak at Mt Everest, barometric pressure = 380mmHg, PiO2 is approx 70mmHg
5. in permanent residents of the Andes, arterial and venous PO2 is half normal levels
- d. at peak at Mt Everest, barometric pressure = 380mmHg, PiO2 is approx 70mmHg