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When the user now switches between TTV ventilation and standard ventilation
the ventilator automatically switches between the two stored wave shape
settings.
14.1.15 Circuit Disconnection Procedure
Due to the method of monitoring of the flow sensor, under certain settings the
ventilator can misinterpret the removal of the ET tube from the flow sensor (for
endotracheal suctioning as an example) as flow sensor contamination. This is
due to the fact that once the ET tube has been removed the flow would become
abnormally high (dependant on the user selected pressure) and remains high for
a period of time in excess of 3.5 seconds, this the ventilator recognizes as sensor
contamination.
To avoid the triggering of the alarm and the subsequent re-calibration of the flow
sensor the following procedure for circuit disconnection should be used.
Step 1. Set the ventilation mode to Standby.
Step 2. Remove the ET manifold from the flow sensor.
Step 3. Remove the Flow sensor from the ET tube.
Step 4. Carry out procedure (example shown, endotracheal suctioning).
Step 5. Re-fit the flow sensor to the ET tube.
Step 6. Re-fit the ET mainfold to the flow sensor.
Step 7. Re-start the ventilation mode by pressing the Standby button.
Step 2
Step 3
Step 4
Step 5
Step 6
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