Breas Nippy 4 - High Vt; Low Vt E Alarm (Low Expired Tidal Volume)

6.3.7 High Vt
e
Alarm (High Expired Tidal Volume)
Property Description
Alarm text
High Vte
Priority
Medium
Alarm condition A High Expired Tidal Volume alarm will be given when the
monitored Expired Tidal Volume exceeds the alarm limit for
15 seconds.
Possible cause
• Mismatch between Expired Tidal Volume and alarm setting.
Setting range
• 100 ml to 2500 ml
• Off
Setting resolution 10 below 600 ml, 100 above 600 ml
Ventilator action The ventilator will continue treatment with the same settings.
6.3.8 Low Vt
e
Alarm (Low Expired Tidal Volume)
Property Description
Alarm text
Low Vte
Priority High
Alarm Condition A Low Expired Tidal Volume alarm will be given when the
monitored Expired Tidal Volume fails to reach the set limit for
the Low Expired Tidal Volume alarm for 15 seconds.
Possible cause
• Mismatch between Expired Tidal Volume and Alarm setting.
• Changes in airway resistance and or compliance.
• Leakage around the mask or within one of the components
of the circuit.
Reset criteria Full breath above set alarm limit
Setting range
• 50 ml to 2000 ml
• Off
Setting resolution 10 below 600 ml, 100 above 600 ml
Ventilator action The ventilator will continue treatment with the same settings.
86
Alarms
User Manual
Doc. 006553 M-6