What is a normal end-tidal PETCO2 range?
a. 30 to 38 mm Hg
b. 35 to 43 mm Hg
c. 38 to 46 mm Hg
d. 42 to 50 mm Hg
ANS: B
In healthy individuals, the PETCO2 averages 1 to 5 mm Hg less than the PaCO2, or between 35 and 43 mm Hg (approximately 5% to 6% CO2).
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