As the barometric pressure increases, there is an increase in the density of the gas being breathed. The increase in gas density in turn causes a(n):
a. Decrease in work of breathing c. Increase in work of breathing
b. Increase in FIO2 d. Decrease in FIO2
Q. 2 A patient is receiving 0.30 FIO2 with a barometric pressure at 750 mm Hg. The partial pressure of carbon dioxide (PCO2) for this patient is 70 mm Hg; the partial pressure of arterial oxygen (PaO2) is 60 mm Hg. The PAO2 for this patient is _____ mm Hg.
a. 100.2 c. 160.0
b. 123.4 d. 181.7
Q. 3 A patient is receiving 0.60 FIO2 with a barometric pressure of 755 mm Hg. PCO2 is 56 mm Hg and PaO2 65 mm Hg. The PAO2 for this patient is _____ mm Hg.
a. 265.6 c. 354.8
b. 300.9 d. 404.0
Q. 4 ______ law states that if the temperature of a gas remains constant, the volume of a gas is in-versely related to its pressure.
a. Henry's c. Dalton's
b. Boyle's d. Laplace's
Q. 5 Dalton's law states that:
a. The total pressure of a gas mixture equals the sum of the partial pressure of each constituent gas in the mixture.
b. The pressure within a liquid sphere is in-fluenced by the surface tension forces of the liquid and the size of the sphere.
c. There is a direct relationship between the absolute pressure of a gas and its temper-ature.
d. The volume of a gas is inversely related to its pressure.
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