Ticontrol; Trigger/Cycle Sensitivities - ResMed C28173 Manual

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TiControl

TiControl™ allows the clinician to set minimum and maximum inspiratory time limits. Ti Min
and Ti Max can be set to either side of the patient's ideal spontaneous inspiratory time, ensuring
adequate time for gas exchange and offering a 'window of opportunity' to cycle into EPAP.
For some patients whose inspiratory effort or flow are weak and insufficient, Ti Min prevents
the premature cycling to EPAP. Premature cycling to EPAP can result in insufficiently supported
breaths.
When breath detection becomes difficult due to excessive leak or inhibited exhalation effort or
flow, Ti Max effectively prevents prolonged inspiration. See "Setting TiControl" on page 55.

Trigger/Cycle sensitivities

Under normal conditions, the device triggers (initiates IPAP) and cycles (terminates IPAP and
changes to EPAP) as it senses the change in patient flow. Patient breath detection is enhanced
by the device's automatic leak management feature—Vsync.
In addition, the device has five adjustable trigger/cycle sensitivities to optimise the sensing level
according to patient conditions.
For more information, see "Trigger/cycle sensitivities" on page 56. For characteristic data, see
"Technical specifications" on page 63.
Very Low
Medium
Very High
Patient
Flow
Ti Min
Patient flow
Pressure
Adjustable Trigger Sensitivity
Ti Max
Cycle
Window
Adjustable Cycle Sensitivity
Patient
Flow
Ensuring successful ventilation with Stellar
Very High
Medium
Very Low
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