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In the VCV mode, you can set the breathing hold time (T
P
) to improve the gas distribution
conditions in the patient’s lung, and set the PEEP to improve the vent of end-tidal CO
2
and
increase oxygen in the breathing process.
In the VCV mode, the following parameters need to be set:
- 【V
T
】
- 【Freq】
- 【T
I
】
- 【T
P
】
- 【FiO
2
】
- 【PEEP】
- 【P
TRIG /
F
TRIG
】
2.8.2 Free flow
In Volume Controlled ventilation, Free flow can be set in the Mode setting screen.
If the ventilator measures patient spontaneous breathing during inspiration (The Pressure
decrease by the 2cmH
2
O), the ventilator will recognize the patient demand and
automatically “switch over” to deliver a Pressure Support Ventilation. This allows flow to
exceed the set Peak flow, thereby meeting the patient’s demand.
Free flow is available in VCV, SIMV+VCV, SPONT (Backup ventilation: VCV) modes.
Default setting: Close.
2.8.3 PCV mode
PCV (pressure control ventilation ), in the PCV mode, during inspiratory period, the
ventilator provides the mandatory ventilation according to the pre-set pressure for the
patient, during the whole inspiratory period, the airway pressure is stabilized at the set
value, and the flow curve is in downward trend. The same with the VCV mode, in the PCV
mode, the mandatory ventilation can be achieved by patient’s triggering in the expiratory
period.
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