high-frequency oscillatory ventilation
Also written as: HFOV — High-Frequency Oscillatory Ventilation
Ventilation technique using rapid, small-volume oscillations to minimize lung injury.
Full Definition
A specialized form of mechanical ventilation that delivers very small tidal volumes at supraphysiologic frequencies (typically 10-15 Hz or 600-900 breaths per minute). HFOV creates oscillatory pressure waves that facilitate gas exchange through mechanisms different from conventional ventilation. This technique is particularly useful in severe respiratory failure when conventional ventilation fails, as it can improve oxygenation while potentially reducing ventilator-induced lung injury.
Usage
Usage note: Hyphenate compound modifiers; distinguish from other high-frequency ventilation modes.
In Context
- "The infant was placed on HFOV due to severe respiratory failure unresponsive to conventional ventilation." — Medical consultation
- "High-frequency oscillatory ventilation settings included mean airway pressure of 12 cmH2O and delta P of 25." — Respiratory therapy note