BiLEVEL VT — BiLevel VT (Volume-Targeted)
Bilevel support that adjusts inspiratory pressure to reach a target tidal volume.
Waveform
How it works
- A two-level positive airway pressure mode that supports spontaneous breaths and works toward a target tidal volume.
- If no spontaneous inspiratory effort is detected within the set rate, the device delivers a time-controlled mandatory breath.
- EPAP is applied during expiration.
- The IPAP value changes according to the patient’s lung compliance and airway resistance in order to reach the target tidal volume.
- IPAP stays within the set minimum and maximum inspiratory pressure limits.
Physiological basis
It automatically changes the inspiratory pressure to maintain the target tidal volume. By adapting to changes in lung mechanics, it aims for more stable ventilation.
Adjustable parameters 12
Pressure level applied during inhalation.
Pressure level applied during exhalation.
Targeted breathing volume for each breath.
Highest pressure allowed during inspiration.
Lowest pressure allowed during inspiration.
Sets how quickly pressure rises to the inspiratory pressure.
Sets how quickly pressure transitions to the expiratory pressure.
Sensitivity required for the patient to trigger inspiration.
Sensitivity required to cycle from inspiration to expiration.
Number of breaths per minute.
Duration of the inspiratory phase.
Applies 1.5× the inspiratory pressure once every 20 breaths.