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ESO 2 ICU Ventilator 52 User Manual
Appendix
SMMV
Synchronised Mandatory Minute Ventilation
NOTE
Check that SMMV is an enabled option on your ventilator
before attempting selection.
SMMV provides a set level of minute volume ventilation.
SMMV allows spontaneous breaths, combined with a
synchronised mandatory breath, to achieve the set minute
volume
Select SMMV on the main display
SMMV will be displayed on the main screen.
NOTE
1. The trigger window is pre-set to 60% of the BPM cycle
time.
2. The trigger is flow activated.
3. SMMV is not available if Spirometry is disabled.
4. If the pressure limit and alarm are activated the
inspiratory phase is terminated.
SMMV Settings
NOTE:
1. V
M
can be adjusted before SMMV is confirmed.
2. The trigger setting is adjustable between 0.7 and 4.0 L/
min.
A A
B
B
Pmax
PEEP
0 cmH2O
E D C
A A
B
B
Pmax
PEEP
0 cmH2O
D C
SMMV - Spontaneously Breathing Patient
A = Cycle time (set from BPM)
B = Trigger window
C = Spontaneous breath
D = Trigger point
E = Mandatory breath tidal volume.
This is equal to V
M
/BPM, minus the volume
spontaneously breathed during the cycle (this
maintains the set V
M
)
Inspiratory flow in the trigger window (generated
by the patient’s spontaneous breath) results in a
synchronised mandatory breath, ensuring that the
set minute volume is achieved
SMMV - No breathing effort by Patient
A = Cycle time (set from BPM)
B = Trigger window
C = Flat pressure trace (no breathing effort)
D = Mandatory breath at the end of the trigger
window (at the set V
M
)
If the patient makes no effort to breathe during a
cycle, a mandatory breath, at the end of the trigger
window, will still be delivered at the preset volume
and rate