Dräger Evita 2 Dura - Simv, Simv;Asb

Operation
44
Setting Ventilation Modes
SIMV, SIMV/ASB
Synchronized Intermittent Mandatory Ventilation*
Assisted Spontaneous Breathing**
Fixed mandatory minute volume MV, set with the
tidal volume V
T and frequency f. The patient can breathe
spontaneously between the mandatory ventilation strokes,
thereby contributing to the overall minute volume.
Spontaneous breathing can be assisted by ASB.
For patients with insufficient spontaneous breathing or
patients being weaned from artificial ventilation by progressive
reduction of the mandatory proportion of the total minute
volume.
The frequency can be reduced to 0 during the weaning
process. The machine automatically changes to ventilation
mode CPAP or CPAP/ASB. This ventilation mode is also
displayed.
Set the ventilation pattern for SIMV via the keys for the
ventilation parameters:
Tidal volume »V
T«
Insp. Flow »Flow«
Frequency »f«
At f = 0/min, the ventilator switches to CPAP mode.
Inspiration time »Tinsp«
Sensitivity »Trigger«
O
2 concentration »O2«
Positive end-expiratory pressure »PEEP«
Additionally for SIMV/ASB:
Pressure support »P
ASB«
Pressure rise time »Ramp«
SIMV, SIMV/ASB can be supplemented with the following
ventilation parameters:
Apnoea ventilation – for automatic switchover to volume-
controlled mandatory ventilation if the patient stops breathing.
If breathing stops, Evita 2 dura activates an alarm after the set
alarm time (T
Apnoea > ) and starts volume-controlled
ventilation with the set ventilation parameters:
Frequency »f
Apnoea«
Tidal volume »VT
Apnoea«
The patient can breathe spontaneously during apnoea
ventilation. The apnoea ventilation frequency remains
constant.
Set apnoea ventilation, see page 52.
* For a detailed description of SIMV, see page 118.
** For a detailed description of ASB, see page 119.
023
Paw
Flow
T
insp
Pmax
PEEP
fast
rise time
slow
rise time
ASB pressure support
Trigger window
f
Insp. Flow
t
t
1
024
Paw
Flow
Apnoea alarm time
T
Apnoea >
Start of
Apnoea Ventilation
t
t
PEEP
fast
rise time
slow
rise time
Spontaneous
breathing with ASB
pressure support