The monitor displays and announces the most recent equal or highest
priority alarm unless the alarm is in a timeout period.
Life threatening (red) alarms are announced first, since they have
the highest priority.
If there are no life threatening alarm conditions active, the
highest priority alarm in any chain is announced.
If alarm conditions in different chains are detected, the alarm
condition that occurred most recently is announced. The
exception is Irregular HR, which only occurs if no other alarms
An activated alarm has no effect on subsequent alarm condition
detection, but does prevent the activation of any alarm lower on the
same chain. For example, if there is an active Vent Bigeminy alarm, a
PVCs > xx/min will not become active because it is lower on the same
chain. However, a high HR alarm will become active because it is on
Higher priority alarms will supersede the previous alarm, causing the
indicators to occur again. For example, if a Vent Trigeminy alarm is
active and a Pair PVCs occurs, the Pair alarm will be activated. Only
one arrhythmia alarm can be active for a patient at any one time.
The alarms in each category are prioritized according to the level of
All ECG alarms (includes arrhythmia alarms) will not occur if the HR
source is other than ECG. This can also be the case if Auto Mode is
selected as HR source.