PHILIPS Respironics Trilogy 202 User Manual page 49

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Volume Control Cycle (Inspiration to Expiration) (Only available
during Volume Control Therapy)
An Inspiratory Time setpoint limits the time spent in inspiration
during breathing in all modes. Once the time limit is reached, the unit
automatically cycles to expiration.
Flow Trigger
Flow trigger provides a manual setting that allows for breath
initiation and termination based on a set flow trigger sensitivity and
flow cycle sensitivity.
Flow Trigger Sensitivity (Expiration to Inspiration):
The flow trigger initiates when the patient's inspiratory effort creates a flow
equal to or greater than the flow trigger sensitivity setting. The method of
the flow trigger is dependent upon the circuit type that is chosen.
Leak Compensation:
When using the Passive Circuit configuration, compensation for both the
intentional and unintentional leak is included in the triggering method.
When using the Active PAP Circuit configuration, leak compensation
is not available.
When using the Active Flow Circuit configuration, flow trigger with
leak compensation may be enabled. The default setting when using
the Active Flow Circuit is Leak Compensation On. The clinician has
the option to turn off leak compensation; however, unintentional
leak will not be compensated. Both options measure the flow at the
proximal flow sensor.
Flow Cycle Sensitivity (Inspiration to Expiration):
This cycling method is only active if the Flow Trigger has been
selected for the Trigger Type. As flow begins to decrease during
inspiration, if the patient flow is less than the flow cycle sensitivity
setting, the device will cycle to expiration.
For example: if the flow cycle sensitivity setting is set to 25%, when
the flow has decreased by 25% of the peak flow, the device will cycle
to the EPAP/PEEP level.
Trilogy 202 user manual
Note: Enabling Leak
Compensation when using the
Active Flow Circuit configuration
only affects triggering and does
not affect tidal volume delivery
or Vte measurement.