Measuring ventilation ratios
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8
IMT Analytics AG
To measure ventilation ratios it is essential that FlowAnalyser can read a ventilation
cycle from the measured pressure and / or flow graphs. This is controlled using the
triggers.
Correct definition of the start and stop triggers is therefore of major importance and
it can have a considerable impact on the measurement results.
For triggering the ventilation cycles the set triggers are used (
6.14 Set trigger
).
It is therefore very important for the triggers to be set correctly before the measure-
ment of ventilation ratios is started.
The start trigger is interpreted as the beginning of the inspiratory
phase.
The stop trigger is interpreted as the end of the inspiratory phase and
as the beginning of the expiratory valve. Expiration continues until the
next start trigger.
8.1 General
8 Measuring ventilation ratios