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Rise Time Comfort Feature
If enabled, the device provides a feature called Rise Time in all ventilation modes except CPAP. Rise time is
the amount of time it takes the device to change from the expiratory pressure setting to the inspiratory pres-
sure setting. Rise time levels of 1, 2, 3, 4, 5, or 6 progressively reflect slowed response of the pressure in-
crease that will take place at the beginning of inspiration. A setting of 1 is the fastest rise time while a setting
of 6 is the slowest. Adjust the rise time to find the most comfortable setting for the patient. Rise time cannot
be adjusted when Bi-Flex is enabled.
Digital Auto-Trak
Digital Auto-Trak is an important ventilation feature due to its ability to recognize and compensate for uninten-
tional leaks in the patient circuit. Digital Auto-Trak is an automated process that maintains optimum ventilator
performance in the presence of leaks. The device continuously monitors the actual circuit and adjusts an in-
ternal estimate of patient flow as natural variations in the circuit leak occur. As unintentional circuit leaks oc-
cur, the triggering and cycling algorithms ensures optimum patient and machine synchrony. It also provides a
high degree of accuracy for calculation of flow-based parameters, such as exhaled tidal volume.
1.2 Device Features