Instructions for Use Fabius MRI SW 3.n 99
Operation
Based on a defined frequency (Freq) and a defined
ratio of inspiratory time to expiratory time (Ti:TE), a
tidal volume (V
T) is applied at a constant inspiration
flow (Insp Flow).
The inspiration flow (Insp Flow) results from the
tidal volume (V
T) and the ratio of inspiratory pause
time to inspiratory time (T
IP:TI).
When TIP:Ti is set to 0, the tidal volume (VT) is
applied at the lowest inspiration flow (Insp Flow)
which is possible at the corresponding frequency
(Freq). In addition, a positive end-expiratory pres-
sure (PEEP) can be set.
To avoid too high pressures, the alarm limit P
MAX
can be set according to the physiological state of
the patient.
The lower pressure limit PAW 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.
1
PAW
PMAX
PEAK
PLAT
PAW low
PEEP
TI TE
Flow
Freq
VT
TIP
TI
insp Flow
Time
Time
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