20
2.8.8 PRVC mode
PRVC (Pressure Regulated Volume Control), it has the characteristics of pressure control
ventilation (PCV) mode and volume control ventilation (VCV) mode. In PRVC mode,
inspiration is completed with the preset tidal volume and frequency (times/min) within the
preset inspiratory time, each inspiration is automatically adapt to the controlled inspiratory
pressure, which changes the characteristic of lung/thoracic to ensure commonly using of
the minimum pressure to deliver the preset tidal volume and minute ventilation volume.
The inspiratory pressure keeps constant throughout the preset inspiratory time. The
inspiratory flow rate is decreasing.
In PRVC mode, the following parameters need to be set:
-
【
T
I
】
-
【
Freq
】
-
【
FiO
2
】
-
【
V
T
】
-
【
PEEP
】
-
【
P
TRIG /
F
TRIG
】
-
【
P
rate
】
2.8.9
NPPV mode
NPPV (Noninvasive positive pressure ventilation). In NPPV mode, ventilator supplies
assistant ventilation for patients through non-invasive manner such as masks.
In NPPV mode, the following parameters need to be set:
-
【
PEEP
】
-
【
ETS
】
-
【
FiO
2
】
-
【
Tapnea
】
-
【
P
supp
】
-
【
P
TRIG /
F
TRIG
】
-
【
P
rate
】