Which of the following would indicate adequate oxygenation for adult patients with chronic lung disease and an accompanying acute-on-chronic hypoxemia?
1. SaO2 of 90% or higher
2. PaO2 of 50 to 60 mm Hg
3. SaO2 of 85% to 90%
a. 1 and 2 only
b. 2 and 3 only
c. 1 and 3 only
d. 1, 2, and 3
ANS: B
Adequate oxygenation of these patients generally means an SaO2 of 85% to 90% with a PaO2 of 50 to 60 mm Hg.
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