6 ECG, Arrhythmia, ST and QT Monitoring
161
Arrhythmia Alarms and Latching
When using arrhythmia analysis, Visual Latching and Audible Latching should be on for red alarms,
or at least
Visual Latching should be on. Because of the transient nature of arrhythmia alarms, many
arrhythmia conditions may go unnoticed if alarm latching is off. This setting can only be changed in
Configuration Mode.
Switching Individual Arrhythmia Alarms On and Off
Some arrhythmia alarms can be individually switched on or off:
Non-Sustain, Vent Rhythm, Run PVCs, Pair PVCs, R-on-T PVCs, V.Bigeminy, V.Trigeminy,
Multif.PVCs, Pacer n.Cap, Pacer n.Pac, Pause, SVT, IrregularHR, Missed Beat, PVCs/min and Afib.
To switch individual alarms on or off, in the
Setup Arrhy menu, select the alarm from the list to switch
between
On and Off. Depending on your configuration, some alarms may not be available in the list
and cannot be switched on or off here.
The monitor displays the INOP message
Some ECG AlarmsOff, if configured, when more alarms are
switched off than configured in your active profile.
Switching All Yellow Arrhythmia Alarms On or Off
All yellow arrhythmia alarms can be switched on and off together. To do this,
•In the
Setup Arrhy menu, select All Yellow Off or All Yellow On.
Adjusting the Arrhythmia Alarm Limits
Some arrhythmia alarms have limits which can be individually adjusted:
VTach HR, VTach Run, PVCs/min, Vent Rhythm, SVT HR, SVT Run, Asystole Thresh., Pause
Threshold
, Afib/IHR End Dly.
1 To adjust alarm limits, in the Setup Arrhy menu, select the alarm to be adjusted.
2 Select the appropriate setting from the pop-up list.
Arrhythmia Alarm Timeout Periods
Normally, an arrhythmia alarm is announced when an alarm condition is detected. However, there are
certain situations that can inhibit the audible and visible indications of the alarm even though the alarm
condition was detected. These include:
• if a more serious alarm condition is active in the same chain
• if a timeout period is in effect for a particular alarm
• if a timeout period is in effect for a higher alarm in that chain.
See “Arrhythmia Alarm Chaining” on page 162 for more details on alarm chains.
What is a Timeout Period?
Timeout periods are automatically started when a yellow arrhythmia alarm is detected. During this
period, the same alarm condition will not generate another alarm. Alarm conditions further down the
same arrhythmia alarm chain will also not generate an alarm, but alarms further up the chain will: see
“Arrhythmia Alarm Chaining” on page 162.
To view the timeout period configured for your monitor, in the
Setup Arrhy menu, see the menu
items
TimeOut 1st and TimeOut 2nd.
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