AI Tutor

Good instinct to ask. In acute hypercapnic COPD, the problem is ventilation, not just oxygenation. BiPAP supports each breath, lowering PaCO₂ and the work of breathing. More O₂ alone can blunt respiratory drive and worsen the CO₂. Want a practice question on this?

Here's one: A COPD patient on 4 L NC has pH 7.31, PaCO₂ 61, HCO₃⁻ 30, and is awake with mild accessory muscle use. What's the best next step? Take a moment, then tell me your answer.