following takes setting of
VT
as an example.
1. Push the [
VT
] button.
2. turn control knob to set [
VT
] to the desired value.
3. Push the control knob or the [
VT
] button to confirm the setting.
4. Set other parameters in this mode in the similar way.
FIGURE 6-4
All parameters in VCV mode
6.5.2 Pressure Control Ventilation (PCV)
6.5.2.1 Description
Pressure control ventilation (hereinafter referred to as PCV) mode is a basic fully-mechanical
ventilation mode. In the PCV mode, ventilator delivers a flow at the preset pressure throughout the
preset inspiratory time at the preset respiratory rate.
During the inspiratory time, the pressure is constant and the flow is decelerating. The peak
pressure (Peak) is the sum of the settings for PEEP and PC above PEEP. If for any reason
pressure decreases during inspiration, the flow from the ventilator will immediately increase to
maintain the set inspiratory pressure.
The volume may vary from breath to breath if the patient’s compliance and/or resistance change.
In the PCV mode, you need to set upper pressure limit to prevent high airway pressure from
injuring the patient.
The following figures show the Paw waveform and flow waveform in the PCV mode.