EPAP and Pressure Support
ASV mode
In ASV mode, clinicians set expiratory positive airway pressure (EPAP) and adjust it to reduce or eliminate obstructive events. To meet the patient’s needs, Pressure Support (PS) varies between Min PS and Max PS values. If required, the device delivers mandatory breaths at the patient’s recent spontaneous breath rate, which means that the timed backup rate matches the patient’s needs when events occur.
ASVAuto mode
When the device operates in ASVAuto mode, it automatically adjusts the expiratory pressure (EPAP) to maintain upper airway patency. The device analyzes the condition of the patient’s upper airway for every breath and delivers expiratory pressure within a desired range (Min EPAP and Max EPAP) to overcome obstructions. The device adjusts EPAP automatically by measuring three parameters: inspiratory flow limitations, snores and obstructive apneas.
Pressure Support
Pressure Support (PS) is the difference between peak pressure as inspiration ends and the minimum pressure as expiration ends (in other words, the amplitude of the pressure waveform delivered to the patient). The AirCurve 11 CS-A PaceWave ™ sets pressure support (Inspiration:Expiration and Expiration:Inspiration) trigger points automatically by measuring the patient’s respiratory flow. The AirCurve 10 CS-A PaceWave algorithm automatically adjusts pressure delivery to keep the patient’s respiratory flow even.
