Dräger Savina, Instructions For Use Manual

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Description
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NIV – Non-invasive ventilation (optional)
With the NIV option, Savina offers an application mode
optimized for non-invasive ventilation using a nose or face
mask. Greater leakage generally occurs with non-invasive
ventilation than with ventilation via a tube. In »Mask/NIV«
mode, therefore, automatic leakage compensation for trigger
detection, alarms and monitoring are adjusted to these special
conditions. Additionally, in volume-controlled ventilation
modes Savina automatically compensates for volume lost due
to leaks.
Automatic leakage compensation for trigger detection
As with invasive ventilation with Savina, automatic leakage
compensation takes place with respect to the trigger criteria in
»Mask/NIV« mode. Savina takes account of leakage up to
25 L/min for trigger detection purposes.
Alarms
During non-invasive ventilation in »Mask/NIV« mode, some
alarm limits are not needed in certain circumstances or cannot
be monitored due to big artefacts. For example, in the case of
very big leaks it is often not possible to measure any expiratory
minute volume. If this alarm were not switched off, the device
would generate alarms all the time. The following alarms can
therefore be deactivated in »Mask/NIV« mode:
— Minute volume low
— Tidal volume high
— Apnoea detection.
Non-invasive ventilation with the alarms switched off is only
permissible if the patient’s safety is not put at risk.
The »!!! Airway pressure low« alarm can be delayed by up to
60 seconds. This is done by setting a delay time T
Disconnect
from 0 to 60 seconds on an additional screen page
»Alarms 2/2«. For example, with a setting of 10 seconds the
patient can remove the mask for up to 10 seconds before
Savina activates an »!!! Airway pressure low« alarm.
Because leaks are normal in non-invasive ventilation, the
messages "! Leakage", "! ASB >4s" and "!!! ASB > 4s" are not
displayed in this mode.
Monitoring
Savina provides an additional Values page in »Mask/NIV«
mode. Among other things, this shows the leak minute volume
MVleak as a percentage of the measured minute volume.
The tidal volume VTpat indicates the volume actually reaching
the patient. VTpat is the delivered tidal volume less the volume
lost due to leakage during inspiration.