Page 88
16.4.3 TTV
plus
(volume targeting) all mechanical
breaths in CMV.
When the user selects TTV
plus
the PIP control
becomes the MAX PIP control. The Max PIP control
allows the user to set the maximum pressure at
which a volume limited backup breath is delivered.
In TTV
plus
the volume that the machine delivers is
the limiting factor.
Step 7. If required, set the minute volume alarms.
The alarm thresholds are found by selecting the
minute volume graph . Once set the user
can revert to the default waveform display.
Step 8. If TTV
plus
(volume targeting) of the
mechanical breaths is required, turn on the function
and set the Max PIP and the Vte (TTV) (Targeted
Tidal Volume). The user may have to adjust the Low
Tidal volume alarm threshold.
16.4.4 Ventilation without a flow sensor
connected.
When the ventilator is used without the flow sensor
connected, the user will have to set the “Cycle Fail”
alarm.
Flow based functions, waveforms and loops will not
be displayed.
TTV
plus
will not be available.
Refer to chapter "15.2 Breath Trigger Sensitivity
(Pressure Triggering)" on page 80 for more
information.
Note: When TTV
plus
is discontinued the Max
PIP returns to the last used PIP as shown in
the MAX PIP parameter control (Not the set
MAX PIP) or with a minimum of 5 mbar above
the set PEEP. The user should ensure the PIP
is set correctly and adjust if required.
Note: The user cannot set the high and low
minute volume alarms when the flow sensor
is not connected.
Note: When TTV
plus
is discontinued the Max
PIP returns to the last used PIP as shown in
the MAX PIP parameter control (Not the set
MAX PIP) or with a minimum of 5 mbar above
the set PEEP. The user should ensure the PIP
is set correctly and adjust if required.
Caution: If the flow sensor requires removal
from the circuit whilst TTV
plus
is ON, the user
must set the MAX PIP to the measured PIP.
For further information refer to "14.1.15
Targeted Tidal Volume, Vte (TTV)" on page 70.
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