Figure 3
Effect of different O2 flow rates on PAO2 during maximum physical activity at 8000 m, 8500 m and on the summit of Mt Everest. With maximum physical actvitty in the range of the respiratory limit value, 6 l O2/min flow rate at 8500 m is still sufficient. Close to the summit even with 8 l O2/min a PAO2 of 50 mm Hg is no longer achieved.
