IMT Analytics FlowAnalyser Series - Page 53

Measuring ventilation ratios
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8.6.1 Inspiratory volume Vti
If the ventilation curve has a plateau or a pause, a very small flow can nevertheless
be measured during that time. Many ventilators do not include these small flows in
the calculation of Vti. With the following trigger settings this can also be prevented in
FlowAnalyser:
S on this chart represents the start trigger and E represents the end trigger.
8.6.2 Expiratory volume Vte
Here is the analog setting for Vte:
Here too the start trigger should be placed at S and the end trigger should be placed
at E