Which of the following are acceptable indicators of hypoxemia for purposes of justifying home O2 therapy? 1. Resting PaO2 of 55 mm Hg (room air) 2. Drop in SaO2 below 89% during ambulation 3. Resting arterial SaO2 below 88% (room air)

a. 1 and 2 only
b. 2 and 3 only
c. 1 and 3 only
d. 1, 2, and 3

ANS: D
To guide practitioners in providing quality care, the AARC has published a Clinical Practice Guideline on Oxygen Therapy in the Home or Extended Care Facility. Excerpts appear on p. 1291.