Ventilation Modes Operations
5 - 14 046-004667-00 A7™ Operating Instructions
SIMV-PC means to deliver synchronized intermittent mandatory pressure controlled ventilation
to the patient. In the SIMV-PC mode, the ventilator waits for patient’s next inspiration based on
the specified time interval. The sensitivity depends on Trigger. If Trigger is reached within the
trigger waiting time (called synchronous trigger window), the ventilator delivers pressure
controlled ventilation synchronously with the preset inspiratory pressure and inspiratory time. If
the patient does not inspire within the trigger window, the ventilator delivers pressure controlled
ventilation to the patient at the end of trigger window. Spontaneous breathing outside trigger
window can acquire pressure support.
5.5.8.4 To Set SIMV-VC or SIMV-PC Mode
1. Select the SIMV-VC tab or SIMV-PC tab on the main screen.
2. Check that all SIMV-VC or SIMV-PC parameters are set appropriately.
If necessary, select the parameter softkey to edit the parameters settings (see FIGURE 5-13).
You can use the digital keyboard on the screen to enter the desired value, or continuously
press the or buttons to rapidly increase or decrease the parameter values.
3. Select the Set Mode softkey to confirm.
SIMV-VC parameters:
• Vt: Tidal volume
• Rate: Breath rate
• Tinsp: Time of inspiration
NOTE: The screen displays the calculated I:E ratio based on Rate and Tinsp
when adjusting the Tinsp.
• Tpause: Inspiratory pause
• PEEP: Positive end-expiratory pressure
• Plimit: Pressure limit level
• Trigger: Flow trigger level
• PS: Pressure support
• ΔP: Change in pressure
• Tslope: Rise time
SIMV-PC parameters:
• Pinsp: Peak inspiratory airway pressure
• Rate: Breath rate
• Tinsp: Time of inspiration
NOTE: The screen displays the calculated I:E ratio based on Rate and Tinsp
when adjusting the Tinsp.
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