FIGURE 6-2
flow and paw
waveform
in VCV mode
The ventilator can deliver constant flow or
decelerating flow by the flow pattern setting in the
[
controls
] menu.
Although patients may be safely ventilated utilizing a constant flow pattern, the decelerating flow
pattern does provide other benefits in addition to minimizing pressures. A decelerating flow
waveform pattern has been shown to reduce peak inspiratory pressures, dead space, and
alveolar-arterial gradients while increasing mean airway pressures and improving patient to
ventilator synchrony.
6.5.1.2 Start VCV Mode
1. Push the [
Modes
] button to open the [
Modes
] menu.
2. Push [
VCV
] in the [
Modes
] menu, then the [
controls
] menu for VCV mode is opened.
3. Adjust appropriately parameter settings for the patient and then confirm the settings so as to
start VCV mode.
6.5.1.3 Parameter Setup Area in VCV Mode
When VCV mode is confirmed, Key parameters are automatically switched over to the parameter
setup area in this mode. It is convenient to monitor and set.
The following figure shows these parameters to be set in VCV mode.
FIGURE 6-3
Key parameters in VCV mode
1.
[VT]:
Tidal volume
2. [I:E]:
Ratio of inspiratory time to expiratory time
3.
[Rate]:
Breath rate
4. [PEEP]:
Positive end-expiratory pressure
6.5.1.4 Set Parameters in VCV Mode
You can push the [
controls
] button or push the parameter in the parameter setup area directly,
the [
controls
] menu is opened, select the parameter that you want to adjust in VCV mode. The