Operation
104
Instructions for use Primus Infinity Empowered SW 4.5n
Synchronized volume-controlled ventilation
with pressure support (optional)
Pressure support is activated during volume-con-
trolled ventilation by entering a value for the level of
pressure support. This can be defined via the soft
key
∆
PPS.
1 Press the soft key
∆
PPS (F). When the key is ac-
tivated, the last value set for pressure support
appears as the default value, together with the
last value set for the trigger sensitivity above it.
2 Set and confirm the value for pressure support
with the rotary knob. When finally confirmed,
the indication PressSupp in the status area (G)
of the ventilation mode lights up steadily instead
of flashing.
If the patient was ventilated without synchronization
when pressure support was activated, synchroniza-
tion will now be activated automatically with the last
trigger setting used.
Synchronization is maintained with the set value
when pressure support is deactivated and set to
OFF.
In the case of continuous and strong patient activity,
it is possible that the mandatory ventilation coin-
cides with the pressure-supported breaths of the
patient, resulting in an increased tidal volume V
T.
Pressure support is automatically deactivated
when the trigger is deactivated and set to OFF.
The current trigger status is shown above the keys
for the ventilation parameters (H).
Setting ranges and factory settings
310
G
H
F
Volume
sync.
PressSupp
Ventilation pa-
rameters
Setting
ranges
Factory
setting
1)
Pressure limita-
tion
P
MAX
[hPa (cmH2O)]
10 to 70
min. PEEP +10
40
tidal volume
VT
[mL]
20 to 1400
2)
600
Frequency
freq.
3) 4)
[1/min]
3 to 100 12
Inspiratory time
TINSP
4)
[sec.]
0.2 to 6.7 1.7
Insp. pause time:
Insp. time
TIP:TINSP
[%]
0 to 60 10
PEEP
[hPa (cmH
2O)]
0 to 20
max. P
MAX –10
0
Trigger sensitivity
Trigger
[L/min]
OFF,
0.3 to 15
3.0
(Pressure
Support)
OFF
(Volume
Mode/
Pressure
Mode)
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