Chapter 8

Operating Instructions

Selecting the Inspiratory Trigger (I-Trigger)

The I-Trigger setting determines how inspiratory effort is detected (by measuring a drop in airway pressure or an increase in patient inspiratory flow) and when inspiration begins.

•In VCV and PCV, you can select a pressure or flow I-Trigger.

•In NPPV, the I-Trigger is always Flow.

Follow these steps to set the I-Trigger:

1.Push the VCV SETTINGS, PCV SETTINGS, or NPPV SETTINGS button.

2.Push the I-TRIGGER button. The inspiratory trigger window insert (Figure 8-21)appears.

3.In VCV and PCV: select Pressure or Flow. (Because only the flow trigger is available in NPPV, the Pressure and Flow buttons do not appear in this insert in NPPV.)

4.Adjust and change the value as described above.

You can select Pressure or Flow in VCV or PCV. In NPPV, only Flow I- Trigger is available (these buttons do not appear).

Figure 8-21: Inspiratory Trigger Window

Settings with Calculated Values

Certain window inserts that are used to modify values of settings can also have calculated results in them (Figure 8-22).

When the settings window insert being displayed is VCV Rate, the calculated minute volume that results from the rate and tidal volume settings is displayed along with the rate value. This is also the case when the tidal volume setting window insert is displayed. When the setting window insert for PCV Rate is

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Philips V200 manual Selecting the Inspiratory Trigger I-Trigger, Settings with Calculated Values
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