User Manual

25
Extraordinary Event Detection
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Extraordinary Event
Detection.
Some beats do not meet
algorithms criteria for
classified abnormal, even
though a clinician may
consider it abnormal.
No action required. All
arrhythmia detection
algorithms must make
tradeoffs to minimize
nuisance alarms. No
algorithm has 100%
sensitivity to all abnormal
beats.
All beats in observed event
do not meet criteria for that
type of event.
Adjust limits in Alarm
Setup to be more sensitive
to type of event.
All beats in observed event
were not detected. Beats
less than 3 mm in
amplitude will not be
detected. Beats greater than
4 cm may trigger artifact
rejection. Very wide beats
may be missed due to their
low frequency content.
Adjust size of QRS to about
1 to 2 cm on bedside
monitor. If a very wide beat
is consistently being
missed, select a lead on
which abnormal beat is not
as wide.