What is an appropriate initial intervention for a patient with mild-to-moderate respiratory distress due to COPD?

• A. Immediate intubation
• B. Nebulized bronchodilator only, no oxygen
• C. Administer supplemental oxygen at the lowest flow that maintains SpO2 around 88–92%, and avoid high FiO2 unless needed; monitor closely
• D. High-flow oxygen to maintain SpO2 at 100%

Answer: (C)

In COPD with mild-to-moderate respiratory distress, the priority is to support oxygenation while preserving enough ventilation to avoid carbon dioxide retention. In these patients, giving too much oxygen can worsen hypercapnia and acidosis by reducing the drive to breathe and by increasing ventilation–perfusion mismatch. The best initial approach is to provide supplemental oxygen at the lowest flow that brings SpO2 into a safe, target range—about 88–92%—and to monitor closely. This range corrects hypoxemia without pushing oxygen delivery into levels that can aggravate CO2 retention.

Starting with a simple nebulized bronchodilator is helpful for bronchospasm, but it does not address low oxygen levels and could allow ongoing hypoxemia if oxygen isn’t provided. Immediate intubation is reserved for signs of impending respiratory failure or failure of noninvasive support, not as the first step in mild-to-moderate distress. Giving high-flow oxygen to push SpO2 to 100% risks worsening CO2 retention and oxygen toxicity in COPD patients, and is not appropriate as the initial move.

So, the best choice integrates gentle, titrated oxygen to maintain SpO2 in the 88–92% range with careful monitoring and readiness to escalate if the patient worsens.