Dräger Fabius OS Instructions For Use Manual page 86

Operation
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
(TRIGGER), the device supports the patient
according to the Pressure Support setting (ΔP
The set inspiratory flow (Insp Flow) defines how
fast the ΔP pressure is reached. The end of inspi-
PS
ration 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
inspiratory effort is detected and the safety period
has expired, the device applies a pressure-con-
trolled breath with P
INSP
The lower pressure limit P
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.
86
PS
= ΔP .
PS
low is used for pres-
AW
P
AW
Trigger
Trigger
max.
4 sec
ΔP
PS
).
Insp Flow
1
Freq Min
Flow
25%
Flow Trigger Flow Trigger
Instructions for Use Fabius OS SW 3.n
P
AW
1
Freq Min
25%
No Trigger
low
Time
Time