Which type of HFV features active expiration?

Which type of HFV features active expiration?

• A. HFJV
• B. HFOV
• C. HFBV
• D. HFAV

Answer: (B)

The type of High-Frequency Ventilation (HFV) that features active expiration is High-Frequency Oscillatory Ventilation (HFOV). In HFOV, the ventilator delivers very small tidal volumes at a high frequency, but it also incorporates a mechanism that actively engages in expiration. This mode helps to improve gas exchange by allowing for active expiration, which can reduce air trapping and improve overall lung mechanics. HFOV provides ventilation through continuous oscillations of pressure that facilitate both inspiration and expiration, unlike other modes that primarily focus on inhalation. The active expiration aspect is crucial as it helps to maintain functional residual capacity and enhances carbon dioxide clearance. This mechanism of active expiration distinguishes HFOV from other modes of high-frequency ventilation, which might utilize different strategies for managing breath delivery and expiration.

The type of High-Frequency Ventilation (HFV) that features active expiration is High-Frequency Oscillatory Ventilation (HFOV). In HFOV, the ventilator delivers very small tidal volumes at a high frequency, but it also incorporates a mechanism that actively engages in expiration. This mode helps to improve gas exchange by allowing for active expiration, which can reduce air trapping and improve overall lung mechanics.

HFOV provides ventilation through continuous oscillations of pressure that facilitate both inspiration and expiration, unlike other modes that primarily focus on inhalation. The active expiration aspect is crucial as it helps to maintain functional residual capacity and enhances carbon dioxide clearance.

This mechanism of active expiration distinguishes HFOV from other modes of high-frequency ventilation, which might utilize different strategies for managing breath delivery and expiration.