Page 71
14.1.17 Wave Shaping
The ventilator allows the user to modify the wave
shape.
To modify the wave
shape the user
should select the
Options and Service
Data Button
in the
mode panel,
Then select the Wave Shaping button.
From the Change Wave Shape panel the user can
alter the wave shape.
There are two default values for the wave shape,
one for standard ventilation and one for standard
ventilation with TTV
plus
.
For standard ventilation (in this case ventilation
without TTV
plus
) the user defined setting is stored in
the ventilator’s memory. The setting is transferred
between modes and is only reset when the
ventilator is restarted (turned off and then on again).
When the user selects TTV
plus
a new default value is
substituted in the wave shape panel. The user can
then modify the TTV
plus
waveform. This setting is
also stored in the ventilator’s memory.
When the user now switches between TTV
plus
ventilation and standard ventilation the ventilator
automatically switches between the two stored
wave shape settings.
14.1.18 Flow sensor removal for suctioning or re-
calibration, pausing ventilation
Under certain settings the ventilator can on the
removal of the ET tube from the flow sensor (for
endotracheal suctioning as an example) trigger the
“Clean Flow Sensor” alarm. 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.
To avoid 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 manifold to the flow sensor.
Step 7. Re-start the ventilation mode by pressing
the Standby button.
Note: Wave shaping has no effect in HFO
Only mode.
Note: The ventilator will alarm during this
procedure, but the alarm volume will be
reduced to the minimum setting.
Step 2
Step 3
Step 4
Step 5
Step 6
To Next Page
Loading...
