high-frequency oscillatory ventilation
Also written as: HFOV — high-frequency oscillatory ventilation
A specialized ventilation technique using very small tidal volumes at high frequencies for critically ill infants.
Full Definition
High-frequency oscillatory ventilation (HFOV) is an advanced mechanical ventilation strategy that delivers very small tidal volumes (1-3 mL/kg) at supraphysiologic frequencies (3-15 Hz or 180-900 breaths per minute). This technique is used as rescue therapy for neonates and infants with severe respiratory failure who have not responded to conventional mechanical ventilation. HFOV maintains lung recruitment while minimizing ventilator-induced lung injury through reduced pressure swings and alveolar stretch. It is particularly useful in conditions such as severe respiratory distress syndrome, persistent pulmonary hypertension, and air leak syndromes.
Usage
Usage note: Distinguish from other high-frequency ventilation modes; HFOV is the most commonly used.
In Context
- "The neonate was transitioned to high-frequency oscillatory ventilation due to refractory hypoxemia." — ICU progress note
- "HFOV parameters were optimized to maintain adequate oxygenation while minimizing lung injury." — Respiratory therapy note