The KnightStar 320 is designed to prevent the upper airway from being obstructed by delivering air pressure through an interface (mask or nasal pillows) using one of three different modes; Inspiratory/Expiratory Positive Airway Pressure (I/E PAP), Assist Control (A/C), or Continuous Positive Airway Pressure (CPAP).
I/E PAP mode allows you to breathe at separate inspiratory and expiratory pressure levels, while CPAP mode provides a single, continuous breathing pressure. These pressure levels are set by your clinician so that they provide enough pressure to keep the airway open while maintaining a comfortable breathing effort while you sleep. A/C mode ventilates patients just as I/E PAP mode with the additional features of a settable backup ventilation respiratory rate and I:E ratio.