Hamilton G5 - Checking for a Gas Leak between the Flow Sensor and the Demonstration Lung

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9 P/V tool maneuver option
Figure 9-11. Checking for a gas leak between the
Flow Sensor and the demonstration lung
6. Check flow sensor performance at high ramp speed:
A.Change the
Ramp speed setting from 2 cmH2O/s to
5cmH2O/s.
B.Begin another maneuver by selecting and activating
Start/Stop .
C.To use the History feature, compare the curves obtained
at
Ramp speed s of 2 and 5 cmH2O/s. Verify that the
inflation and deflation limbs of the two curves are
visually (more or less) parallel (Figure 9-12).
If the curves are not parallel, the flow sensor perfor-
mance is not sufficient to produce meaningful P/V Tool
results. Consider using a new flow sensor.
Figure 9-12. Checking flow sensor performance
Compare curves obtained at different
Ramp speed s.
Nonparallel curves can indicate insufficient flow sensor
performance.