What is a key strategy to minimize oxygen toxicity in pediatric respiratory care?

• A. Use the highest FiO2 to maintain SpO2 near 100%
• B. Use the lowest FiO2 needed to maintain SpO2 around 92-95%, titrating as tolerated
• C. Maintain FiO2 at 50% regardless of SpO2
• D. Avoid SpO2 monitoring entirely

Answer: (B)

Minimizing oxygen toxicity comes from delivering the lowest amount of supplemental oxygen that still keeps tissue oxygenation adequate. In pediatric care, high concentrations of oxygen can generate reactive oxygen species and contribute to lung injury and other oxidative damage, especially in developing lungs. So the best approach is to titrate FiO2 down to the minimum needed to keep SpO2 in a safe target range, typically around 92-95% for most children, and adjust as the clinical situation changes. Continuous SpO2 monitoring provides the feedback needed to fine-tune support and prevent both hypoxemia and unnecessary overexposure. Using the highest FiO2 to push SpO2 toward 100% increases oxidative stress without added benefit, maintaining a fixed FiO2 like 50% regardless of SpO2 risks both inadequate oxygenation and wasted exposure, and skipping SpO2 monitoring eliminates the information needed to titrate safely.