Operation
25
SIMV, SIMV/ASB
Synchronized Intermittent Mandatory Ventilation
*
Assisted Spontaneous Breathing
**
Fixed mandatory minute volume MV, set with the tidal volume VT
and frequency f. The patient can breathe spontaneously
between the mandatory ventilation strokes. 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.
Set SIMV by means of the ventilation parameter keys:
— Tidal volume »VT«,
— Inspiration time »Tinsp«,
— Frequency »f«,
—O2 concentration »O2«,
— positive end-expiratory pressure »PEEP«.
The following can be set on the screen:
— Sensitivity »Trigger« (for synchronization of mandatory
ventilation strokes) on screen page »Settings 1/1«
— Set flow metering by means of »FlowAcc« on screen page
»Settings 1/1«.
— AutoFlow (optional) ON/OFF.
Pressure limit Pmax
The pressure peak can be avoided in SIMV and SIMV/ASB by
setting a pressure limit.
To set the pressure limit Pmax:
● Set Pmax to ON, see page 51.
● Set pressure limit value by means of »Pinsp« key.
● When setting the pressure limit, ensure that the tidal
volume VT is still being applied, as otherwise Savina will
display a "!! Tidal Volume low". Then:
● Set pressure limit higher by means of »Pinsp«,
or
● Increase inspiration time »Tinsp«,
or
● Increase FlowAcc
Additional functions:
— Pressure support »∆ P
ASB above PEEP«
— Apnoea ventilation
● To set apnoea ventilation, see page 28.
* For a detailed description of SIMV, see page 102.
** For a detailed description of ASB, see page 103.
046 37388
Paw
Flow
Tinsp
T=
PEEP
FlowAcc
high
FlowAcc
low
with ASB
pressure support
without ASB
pressure support
Trigger window
f
t
t
1
FlowAcc
062 37388
To Next Page
Loading...
Need help?
General
