PHILIPS Respironics OmniLab Advanced + Clinical Manual page 17

Rise Time
If enabled, the device provides a feature called
Rise Time in S, S/T, T, PC, autoSV, and Bi-level
modes. Rise time is the amount of time it
takes the device to change from the expiratory
pressure setting to the inspiratory pressure
setting. Rise time levels of 1, 2, 3, 4, 5, or 6
progressively reflect slowed response of the
pressure increase 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
An important characteristic of the device is its ability to recognize and compensate for unintentional leaks in the
system and to automatically adjust its trigger and cycle algorithms to maintain optimum performance in the presence
of leaks. This feature is known as Digital Auto-Trak.
The device continuously monitors flow and adjusts the estimate of patient flow as circuit leak changes. The
compensation provides a better estimate of patient flow to be used to track patient breathing patterns and calculate
flow-based parameters, such as exhaled tidal volume.
The device continually tracks breathing patterns and automatically adjusts sensitivity thresholds to ensure optimum
patient and machine synchrony as breathing patterns change or as circuit leak varies.
Sensitive Auto-Trak is an enhancement to the Auto-Trak algorithm that improves patient and machine synchrony
for patients with minimal respiratory effort. Sensitive Auto-Trak refines the baseline trigger and cycle sensitivity
thresholds.
PRESSURE
IPAP
EPAP
Rise Time
TIME
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