What is the primary purpose of high-frequency ventilation in neonatal care?

• A. To eliminate the need for oxygen
• B. To prolong ventilation duration
• C. To reduce peak inspiratory pressures while maintaining adequate gas exchange
• D. To increase peak inspiratory pressures

Answer: (C)

High-frequency ventilation aims to protect the delicate neonatal lung while ensuring gas exchange. It delivers very rapid breaths with tiny tidal volumes, so the pressure needed to drive ventilation (peak inspiratory pressure) can be kept low. At the same time, a constant mean airway pressure is maintained to keep the alveoli open, supporting oxygenation. Gas exchange then occurs through fast oscillations and other diffusion-based mechanisms, not rely on large breaths. This combination reduces the risk of lung injury from high pressures or overdistension, which is especially important in newborns with surfactant deficiency or other lung injuries. Oxygen therapy still plays a role, but the goal is to achieve adequate gas exchange with lower peak pressures, not to eliminate the need for oxygen or to prolong ventilation.