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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.

Mindray A7 Operating Instructions

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