156 EN MEDUMAT Standard
2
WM 68071 05/2021
7 Description of the modes
The SIMV mode is used for volume-controlled ventilation with
a fixed mandatory minute volume. The patient can breathe
spontaneously between the mandatory mechanical breaths
and thereby increase the minute volume. During spontaneous
breathing, the mandatory mechanical breath is synchronized
with the patient's breathing. The mandatory minute volume
and the mandatory respiratory rate remain unchanged.
When the maximum ventilation pressure (pMax) is achieved,
the device maintains the pMax up until the end of the inspiration
time and then switches to expiration. As such, the set tidal volume
is possibly not fully applied if the maximum ventilation pressure
(pMax) is achieved during inspiration.
7.3.9 SIMV + ASB mode
Description
Abbreviation SIMV + ASB
Long form
Synchronized Intermittent Mandatory
Ventilation + Assisted Spontaneous
Breathing
Type Volume-controlled
Requirement
• SIMV option is activated
• Flow measurement + ASB option
is activated
Ventilation parameters
Left-hand navigation knob Vt
Central navigation knob Freq.
Right-hand navigation knob
•PEEP
• pMax
• ΔpASB
•InTr
• ExTr (does not appear if at least
one pressure-controlled ventilation
mode is activated)
•I:E
• Emergency mode
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