Alarms Menu; Adjustable Alarm Settings - ResMed VPAP ST-A User Manual

Alarms menu

Fixed alarms
The alarms pre-set for the device are:
• Power fail
• Block tube*
• Tube disconnected
• Humidifier lid open
• System fault (system error).
* Blocked tube alarm is only triggered reliably for pressures above 10 cm H
Note: The alarms in the above table can also be classified as:
• Clinical alarms—low minute ventilation, apnoea and low SpO
• Patient circuit alarms—blocked tube, tube disconnected, humidifier lid open, high leak and non-
vented mask
• System alarms—power fail and system fault.

Adjustable alarm settings

Alarm setting
High Leak
Non-Vented Mask
Low MV
Low SpO
2
Apnoea Alarm
Alarm Volume
* When the High Leak or Low MV alarms are set to On, SmartStop is automatically disabled.
Default Range
Off On / Off
Off On / Off
Off Off /
1–10 L/min,
1 L/min
increments
Off Off /
70–95%, 1%
increments
Off Off /
10–60 sec,
1 sec
increments
Medium Low /
Medium /
High
Adjustable alarms
Alarms that can be set are:
• High leak
• Non-vented mask
• Low minute ventilation
• Apnoea
• Low SpO (when oximeter connected).
2
O.
2
2
Description
Enables or disables the High Leak alarm feature.
When enabled, leaks >40 L/min (0.7 L/sec) for >10–30
seconds result in an alarm.*
Sets the Non-Vented Mask alarm. Activates within
20–40 seconds when a non-vented mask is attached
during therapy.
Note: Use of supplemental oxygen with a vented
mask may result in false triggering of the Non-Vented
Mask alarm.
Sets the Low Minute Ventilation alarm. Activates
within 20–40 seconds after the measured level
remains below the set limit.
Sets the Low SpO alarm. Activates when the SpO
2
value is below the set value for 20–40 seconds. Only
available when an oximeter is connected.
Sets the Apnoea alarm. Activates when there is no
inspiratory trigger (either patient or machine trigger)
detected from the previous inspiration for the set
interval. Two consecutive inspirations (either patient or
machine triggered) reset the Apnoea alarm.
Sets the audio alarm volume.
2
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