According to the American Association for Respiratory Care (AARC) Clinical Practice Guideline (2002 Revision & Update), which of the following are considered precautions or complications of oxygen therapy?

1. A PaO2 >60 mm Hg in spontaneously breathing patients with chronic PaCO2 levels
2. With FIO2 >0.50 and the risk of oxygen toxicity or absorption atelectasis occurring
3. During laser bronchoscopy and high levels of oxygen
4. Acute myocardial infarction
a. 1, 2, and 4 c. 2, 3, and 4
b. 1, 2, and 3 d. 1, 2, 3, and 4

ANS: B
See the AARC Clinical Practice Guideline: Oxygen Therapy for Adults in the Acute Care Facil-ity—2002 Revision and Update, Clinical Practice Guideline 4-1.