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52
Servo
…
User´s manual
US edition
Order No: 66 00 261
2
Infant Adult Universal Options
Functional description SIMV unctional description SIMV nctional description SIMV ctional description SIMV tional description SIMV ional description SIMV onal description SIMV nal description SIMV al description SIMV l description SIMV description SIMV description SIMV escription SIMV scription SIMV cription SIMV ription SIMV iption SIMV ption SIMV tion SIMV ion SIMV on SIMV n SIMV SIMV SIMV IMV MV V
SIMV is a combination mode where the tion mode where the
patient receives mandatory breaths breaths
synchronized with his breathing efforts and
according to the selected SIMV mode. The
lected SIMV mode. The
patient can breath spontaneously with atient can breath spontaneously with
Pressure Support in between the mandatory Support in between the mandatory y
breaths.
There are three different SIMV modes,
V modes,
depending on the modes installed:
• SIMV (PRVC) + Pressure Support
IMV (PRVC) + Pressure Support pport
• SIMV (Volume Control) + Pressure Support ) + Pressure Support
• SIMV (Pressure Control) + Pressure Control) + Pressure
Support
The mandatory breath y breath
1
Only when the ventilator is configured for y when the ventilator is configured for
Minute volume setting.
2
Only when the ventilator is configured for hen the ventilator is configured for
I:E ratio setting.
The Mandatory breath is defined by the basic
settings (as shown in the table above):
gs (as shown in the table above):
Minute Volume/Tidal Volume (depending on Volume/Tidal Volume (depending on
configuration), PC above PEEP, I:E ratio/ figuration), PC above PEEP, I:E ratio//
Inspiration time (depending on
configuration), Pause time, Inspiratory rise
), Pause time, Inspiratory rise
time and Breath cycle time. h cycle time.
Note: In the Minute Volume configuration the ation the
Tidal Volume is determined by Minute y Minute
Volume divided by SIMV rate. rate.
The Breath cycle time is the length of the
mandatory breath in seconds.
datory breath in seconds.
For example: A SIMV rate of 6, a breath cycle ple: A SIMV rate of 6, a breath cycle h cycle
time of 3 seconds with an I:E ratio of 1:2 E ratio of 1:2
means that the inspiration will take 1 second ke 1 second
and the expiration 2 seconds.
During the SIMV period, the first triggered d, the first triggered
breath will be a mandatory breath. If the If the
patient has not triggered a breath within the
first 90% of the Breath Cycle time a
0% of the Breath Cycle time a me a
mandatory breath will be delivered.
Note: If the ventilator is configured for setting
configured for setting
of Inspiration time, an I:E ratio of 1:2 will be 1:2 will be
used to estimate the Breath cycle time. reath cycle time.
The spontaneous/pressure supported d
breaths are defined by setting the Pressure
support level above PEEP.
ort level above PEEP.
SIMV
(VC)+ PS
SIMV
(PRVC)+P
S
SIMV
(PC) + PS
PC above
PEEP X
Tidal volume /
Minute volume X X
SIMV rate
X
1
X
1
Breath cycle
time
X
2
X
2
X
2
I:E ratio /
Inspiration
spiration
time
X X X
Insp. rise time X X X
Pause time
X
2
SIMV Period
10 sec
SIMV Cycle
SIMV Period Spon. Period
3 7 3
SVX-9010_EN
SIMV IMV MV V