26 Event Surveillance
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*** indicates a high priority (red) alarm
** indicates a lower priority (yellow) alarm. This category includes short yellow arrhythmia alarms,
which may be configured to be shown as one star alarms (
*) on your monitor.
Triggers without asterisk symbols are user-defined triggers.
If You Set User-defined Threshold Triggers
You can define event triggers that are independent of alarm limits. You must set a threshold value and
a threshold time for the trigger. If you set the trigger threshold time to 12 seconds, the monitor triggers
an event if the threshold is violated for more than 12 seconds.
If You Set "On Measurement" Triggers
You can set aperiodic measurements (such as NBP) or procedures (such as Cardiac Output) to trigger
an event whenever they start.
If You Set User-defined Deviation Triggers
You can define event triggers that are independent of specific limits and based instead on deviations
from the current values. You must set a deviation and a period of time in which the deviation occurs.
There are three types of deviation available:
ANY Deviation, UP Deviation where only changes in a
positive direction are detected and
DOWN Deviation where only changes in a negative direction are
detected. The deviation can be defined either in relative terms as a percentage, for example 10%, or as
an absolute value, such as 10 bpm.
Event Retriggering
If a condition that triggered an event persists and the values remain beyond the trigger threshold, a
new event will not be triggered.
For a new event to be triggered by the same condition, the measured values for at least one of the
triggers must cross back into the normal range and then recross the trigger threshold.
Event Notification
Advanced
Event
Surveillance
Only
You can be notified when an event is detected. For each event group you can define a type of
notification depending on the severity of the event conditions. The notification can be a status
message with a prompt tone or a standard *, **, or *** alarm notification. These event alarms are
handled exactly like measurement alarms; they can be silenced and are also suspended when all alarms
are suspended. You should only use alarm notification for events which are comparable in severity to
standard measurement alarms to avoid potential confusion due to too many alarms. Notification in the
form of an alarm is not available when the trigger condition is
At least one Param.. Selecting None
switches event notification off.
Setting the type of notification, or switching notification off, is done in Configuration Mode.
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