A 27-year-old is brought to the emergency department by paramedics following a drug overdose.

A 27-year-old is brought to the emergency department by paramedics following a drug overdose. The patient is obtunded. Blood gases are drawn on room air:

pH: 7.24

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PaCO2: 60 mm Hg

PaO2: 65 mm Hg

HCO3-: 26 mEq/L

Questions

1. Interpret the blood gas.

2. What is the A-a gradient?

3. What type of respiratory failure is present?

4. What is the appropriate initial respiratory treatment in this case?

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