Monnal T75 user manual
In the event of absence of patient respiratory activity, this mode provides the guarantee of controlled
ventilation (VCV).
When the patient has regular and detectable respiratory activity, the unit responds by:
•
supplying a “spontaneous” cycle (PSV) if the time elapsed since the last “controlled” cycle is less
than the SIMV period.
•
supplying a “controlled” cycle (VCV) if the time elapsed since the last “controlled” cycle is greater
than the SIMV period. If patient respiratory activity declines again after a “spontaneous” cycle, the
unit waits for the SIMV period - set TiMax to expire before triggering a “controlled cycle” (VCV) it-
self.
Insufflation in a spontaneous cycle with pressure support ends:
•
If the flow rate falls below the set expiratory threshold (E. Trig);
•
If the patient makes an expiratory effort,
•
or if the insufflation time reaches the maximum Ti setting (Timax).
Note:
Apnea ventilation can be activated. The apnea parameters should be suited to the con-
dition and requirements of the patient.
4.7.5 PSIMV (Synchronized Intermittent Mandatory Pressure Monitored Ventilation)
Principle
PSIMV Mode combines mandatory assisted pressure-controlled ventilation and spontaneous patient
ventilation between the assisted controlled cycles.
Ventilation set-points
FiO2
inspired oxygen fraction
PI
inspiratory pressure (cmH2O)
RR SIMV determines the frequency of the imposed cycles
(c/min)
PEEP
positive end of expiration pressure (cmH2O)
Tins
inspiration time of intermittent controlled assisted cycles (s)
I.Trig
inspiratory trigger (L/min or cmH2O)
PS
pressure support ventilation delivered during the spontaneous cycles (cmH2O)
TImax
maximum inspiration time of spontaneous cycles (s)
Slope
pressure support pressure rise slope (cmH2O/s)
E.Trig
expiratory trigger (% of peak inspiratory flow).
Operation
In this ventilation mode, the “controlled” cycle (PCV) delivers a fixed pressure at the set frequency
RRSIMV. A SIMV period arises from this frequency.
E.g. for a SIMV frequency set to 10 cycles per minute, the SIMV period between two “controlled” (PCV)
cycles is 6 seconds.
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Summary of Contents for MONNAL T75
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