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BiWaze Cough - User Reference Manual
53
Basic MI-E / Cough Therapy
: Single basic Cough cycle comprises of applying a
pause pressure followed by an Inspiratory Pressure and suddenly switching to a
negative pressure (Expiratory phase). A cough therapy treatment may have multiple
such cycles (usually 5-7 cycles) with pauses in between.
In
Auto Mode
the changes in the pressure are triggered by time settings for pause,
inspiratory and expiratory time.
Inspiratory Trigger
: If the inspiratory trigger is enabled in advanced settings menu
the pause phase is extended till the device detects patient inhale effort and applies
the Inspiratory pressures when patient effort is detected. The inspiratory trigger
sensitivity can be set in the range 1-10 with 10 being most sensitive.
The trigger works with detection of pressure and flow change created by the patient
effort. Both Inspiratory flow and pressure are monitored during the pause phase
(every 16ms) when Inspiratory trigger is enabled. The total patient effort detected is
compared with predetermined thresholds. A trigger is raised whenever the effort
detected exceeds these thresholds.
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Pause Time
Inspiratory Time
Expiratory Time
Pause Pressure
Inspiratory Pressure
Expiratory Pressure
Atmospheric
Pressure