4 Use
PEEP
positive end of expiration pressure (cmH2O)
TImax
Maximum inspiration time of cycles (s)
I.Trig
Inspiratory trigger (L/min or cmH2O)
Slope
pressure support pressure rise slope (cmH2O/s)
E.Trig
Expiratory trigger (% of peak inspiratory flow)
Note:
Apnea ventilation can be activated. The apnea parameters should be suited to the con-
dition and requirements of the patient.
•
Use of the “RR mini” parameter. In the absence of inspiratory demand for a time longer
than “1/RR mini”, the ventilator initiates a pressure support cycle. The RR low alarm can
be associated with this safety feature by setting it to a value above “RR mini”.
•
Use of the “TImax” parameter. In the event of a leak in the circuit, the flow rate expirato-
ry trigger might not be activated. In this case, the limitation on inspiration time allows the
patient to enter the expiratory phase.
4.7.4 SIMV (Synchronized Intermittent Mandatory Ventilation)
Principle
SIMV mode combines mandatory assisted controlled ventilation and pressure supports spontaneous
patient ventilation between the controlled cycles.
Ventilation set-points
FiO2
inspired oxygen fraction
VT
tidal volume (mL)
RR
SIMV
determines the frequency of the mandatory cycles (c/min)
PEEP
positive end of expiration pressure (cmH2O)
Tins
determines the inspiration time of the mandatory cycles (c/min)
Tplat
inspiratory plateau time of the mandatory cycles (%TI)
I. Trig
inspiratory trigger (L/min or cmH2O)
Flow
form of flow rate insufflated to the patient: constant or decelerated.
PS
pressure support ventilation delivered during the spontaneous cycles (s)
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 (VCV) delivers a fixed volume 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” (VCV)
cycles is 6 seconds.
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Summary of Contents for MONNAL T75
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