The expected PaO2 for an 80-year-old man who is otherwise in good health and breathing room air is approximately what level?
a. 50 mm Hg
b. 75 mm Hg
c. 80 mm Hg
d. 90 mm Hg
ANS: B
One may estimate the expected PaO2 in older adults by using the following formula:
Expected PaO2 = 100.1 – (0.323 ⋅ age in years)
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