Average volume-assured pressure support (AVAPS) focuses on maintaining which aspect of the respiratory process?

Average volume-assured pressure support (AVAPS) focuses on maintaining which aspect of the respiratory process?

• A. Respiratory rate
• B. Tidal volume
• C. Inspiratory time
• D. Expiratory time

Answer: (B)

AVAPS is designed to keep a target tidal volume by automatically adjusting the pressure support. The machine monitors the air a patient actually delivers with each breath (tidal volume) and, if that volume drifts away from the preset goal, it changes the inspiratory pressure support within a configured range to bring the tidal volume back toward the target. This makes ventilation more consistent when a patient’s effort, lung compliance, or airway resistance vary. Because of that focus, the mode is not primarily about fixing a specific respiratory rate or locking in a particular inspiratory or expiratory time. The rate and timing can still reflect patient effort and device cycling, but the central aim is to ensure a consistent tidal volume. So the best fit here is maintaining tidal volume.

AVAPS is designed to keep a target tidal volume by automatically adjusting the pressure support. The machine monitors the air a patient actually delivers with each breath (tidal volume) and, if that volume drifts away from the preset goal, it changes the inspiratory pressure support within a configured range to bring the tidal volume back toward the target. This makes ventilation more consistent when a patient’s effort, lung compliance, or airway resistance vary.

Because of that focus, the mode is not primarily about fixing a specific respiratory rate or locking in a particular inspiratory or expiratory time. The rate and timing can still reflect patient effort and device cycling, but the central aim is to ensure a consistent tidal volume.

So the best fit here is maintaining tidal volume.