Dräger Evita 4 - Simv, Simv;Asb; Frequency Can be Reduced to

SIMV, SIMV/ASB
Synchronized Intermittent Mandatory Ventilation*
Assisted Spontaneous Breathing**
Fixed mandatory minute volume MV set with tidal volume
VT and frequency f. Between the mandatory ventilation
strokes, the patient can breathe spontaneously, thereby
contributing to the minute volume. Spontaneous
breathing can be supported by ASB.
For patients with insufficient spontaneous breathing or for
patients who are being weaned by progressive reduction
of the mandatory proportion of the total minute volume.
The frequency can be reduced to 0 during the weaning
process. The device automatically changes to the
ventilation mode CPAP or CPAP/ASB. This ventilation
mode is also indicated on the screen.
The screen key »SIMV« and the screen knobs for setting
the SIMV parameters remain on display.
Set the pattern of ventilation for SIMV and SIMV/ASB
with the ventilation parameters:
Tidal volume »VT«
Insp. flow »Flow«
Frequency »f«
Inspiration time »Tinsp«
O2-concentration »O2«
Positive end-expiratory pressure »PEEP«
Pressure support »PASB«
Pressure rise time » «
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To set:
● Touch the appropriate screen knob.
● Adjust to the desired value = turn rotary knob.
● Confirm setting = press the rotary knob.
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SIMV and SIMV/ASB can be expanded with the following
ventilation parameters:
Flowtrigger – for synchronisation with attempted
spontaneous breathing by the patient.
By setting on the flow trigger level, the mandatory strokes
are synchronised with the patient's spontaneous
breathing attempts.
Spontaneous breathing activity by the patient is indicated
by the brief display of a lung symbol instead of the usual
symbol for the patient mode.
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* Please refer to page 164 for a detailed description of SIMV.
** Please refer to page 165 for a detailed description of ASB.
57
Operation
Setting Ventilation Modes
Paw
Flow
T
insp
Pmax
(configurable)
PEEP
fast
rise time
slow
rise time
ASB pressure
assist
Trigger window
f
Insp. Flow
t
t
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