Which of the following PETCO2 readings is consistent with a drug overdose?

a. 0.3% c. 5.3%
b. 2.5% d. 10.0%


ANS: D
Normal expired air contains approximately 4% to 6% CO2. A drug overdose depresses the respir-atory center, leading to a higher than normal PETCO2.

Health Professions

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TJC DEA USP FDA

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