78 Chapter 3: Ventilator Operation Operator's manual
L2786 Rev. M
Ventilation Modes
Leak Compensation.
The ventilator incorporates a leak compensation system. This system compensates for baseline leaks at the patient -
interface. To activate leak compensation, use the touch screen control displayed in the Setup screen.
Assist Control Ventilation (A/C)
This is the default mode for all patient types. In Assist Control ventilation mode, all breaths initiated and delivered are
mandatory breaths. The initiation of a breath is triggered by one of the following:
• Patient effort activates the inspiratory trigger mechanism,
• The breath interval, as set by the RATE control, times out,
• The operator presses the MANUAL BREATH key.
Initiation of a breath by any means resets the breath interval timing mechanism. It is possible for the patient to initiate
every breath if he/she is breathing faster than the preset breath rate. If the patient is not actively breathing, the ventilator
automatically delivers breaths at the preset interval (set breath rate).
1 Mandatory Breath (Breath interval expired)
2 Mandatory Breath (Patient triggered)
Figure 3–13: Assist Control Ventilation Waveform