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This means that the waveforms remain static (they do not creep from left to right)
in the windows.
For interactive ventilatory modes the data is enhanced by displaying the patient
trigger in a different colour.
To view the trigger point the ventilator colours the first 200 milli seconds orange,
after the patient effort that has crossed the breath detection threshold.
The illustration below shows the ventilator in SIMV mode where the first patient
breath did not cross the breath detection threshold. The second patient breath
crosses the breath detection threshold and the ventilator highlights the trigger
point.
SIMV
Mandatory breaths
Patient attempt
below threshold
Patient attempt
crosses threshold
Triggered Breath
Trigger point
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