Dräger Fabius, Instructions For Use Manual, Page: 104 / 232

Operation
104
Instructions for Use Fabius MRI SW 3.n
The parameters that can be set for Pressure Sup-
port mode are shown the adjacent table, along with
their adjustment ranges and factory default values.
Pressure Support ( PS ) can be used to support the
spontaneous breathing of the patient.
If the inspiration flow (
Insp Flow ) during inspiratory
effort is greater than the set trigger flow ( TRIG-
GER ), the device supports the patient according to
the Pressure Support setting (
Δ
P
PS
).
The set inspiratory flow ( Insp Flow ) defines how
fast the
Δ
P
PS
pressure is reached. The end of
inspiration is automatically triggered when reaching
25% of maximum inspiratory flow (
Insp Flow ) or
after a maximum of 4 s. The value Freq Min
(e.g.,3 bpm (1/min)) is used to set a safety period
(safety period = 1/
Freq Min , e.g., 20 s). If no inspi-
ratory effort is detected and the safety period has
expired, the device applies a pressure-controlled
breath with
P
INSP
=
Δ
P
PS
.
The lower pressure limit P
AW
low is used for pres-
sure monitoring to detect apneas (disconnection)
and continuous pressure. An alarm is generated
when the pressure curve does not cross the pres-
sure threshold either from above or below.
Ventilation Parameter
(Pressure Support
mode) Adjustment
Range Factory
Default
Value
Support pressure
Δ
P
PS
[cmH
2
O] ([hPa])
3 to 20, OFF 10
Min frequency for apnea
vent.
Freq Min [bpm] ([1/min]) 3 to 20, OFF 3
Trigger Sensitivity
Trigger [L/min] 2 to 15 2
Inspiratory Flow
Insp Flow
[L/min] 10 to 85 30
PEEP [cmH
2
O] ([hPa]) 0 to 20 0
111
1
1
Trigger
Trigger
Insp Flow
Freq Min
Freq Min
25%
25%
P
AW
Flow
max.
4 sec
Apnea
ventilation
Flow Trigger Flow Trigger
No Trigger
Time
Time
Δ
P
PS