7-1
7 Alarms
Alarms, triggered by a vital sign that appears abnormal or by technical problems of the
patient monitor, are indicated to the user by visual and audible alarm indications.
WARNING
z A potential hazard can exist if different alarm presets are used for the same or
similar equipment in any single area, e.g. an intensive care unit or cardiac
operating room.
z If your patient monitor is connected to the central monitoring system (CMS) or
other monitors, alarms can be displayed and controlled remotely. Remote
suspension, inhibition, or reset of monitor alarms via the CMS or other monitors
may cause a potential hazard. For details, refer to the operator’s manual of the
CMS and the other monitors.
7.1 Alarm Categories
By nature, the patient monitor’s alarms can be classified 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 physiological alarm area.
2. Technical alarms
Technical alarms, also called system status alarms, are triggered by a device
malfunction or a patient data distortion due to improper operation or mechanical
problems. Technical alarm messages are displayed in the technical alarm area.
Apart from the physiological and technical alarm messages, the patient monitor shows some
messages telling the system status or patient status. Messages of this kind are included into
the prompt message category and usually displayed in the prompt information area. Some
prompt messages that indicate the arrhythmia events are displayed in the physiological
alarm area. For some measurements, their related prompt messages are displayed in their
respective parameter windows.
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