9-1
9 Alarms
9.1 Introduction
Alarms, triggered by a vital sign that appears abnormal or by technical problems of the
ventilator, are indicated to the user by visual and audible alarm indications.
NOTE
When the ventilator is started, the system detects whether audible alarm tones and
alarm lamp function normally. If yes, the equipment gives a beep, also the alarm
lamp flashes red and yellow successively. If not, do not use the equipment and
contact us immediately.
When multiple alarms of different levels occur simultaneously, the ventilator
selects the alarm of the highest level and gives visual and audible alarm indications
accordingly.
9.2 Alarm Categories
By nature, the ventilator’s alarms fall into three categories: physiological alarms, technical
alarms and prompt messages.
1. Physiological alarms
Physiological alarms, also called patient status alarms, are triggered by a monitored
parameter value that violates set alarm limits or an abnormal patient condition.
Physiological alarm messages are displayed in the alarm message field.
2. Technical alarms
Technical alarms, also called system status alarms, are triggered by a device malfunction
or a patient data distortion due to proper operation or mechanical problems. Technical
alarm messages are displayed in the alarm message field.
3. Prompt messages
As a matter of fact, prompt messages are not alarm messages. Apart from the
physiological and technical alarm messages, the ventilator will show some messages
telling the system status. Messages of this kind are included into the prompt message
category and are usually displayed in the prompt message field.
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