What oxygen saturation target is generally recommended for a patient with COPD who is at risk of hypercapnic respiratory failure?
Answer and explanation
Correct answer: D. 88 to 92 percent
- Step 1: High oxygen can suppress the hypoxic drive and worsen carbon dioxide retention, so a target of 88 to 92 percent is used.
- Step 2: This avoids both hypoxia and hypercapnia.
Answer
88 to 92 percent.
Why not the others: Targets of 98 to 100 percent risk hypercapnia, and 70 to 75 percent is too low.
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