Using ECG Alarms 7 ECG, Arrhythmia, ST and QT Monitoring
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Using ECG Alarms
ECG alarms can be switched on and off and the high and low alarm limits changed just like other
measurement alarms, as described in the Alarms section. Special alarm features which apply only to
ECG are described here.
Extreme Alarm Limits
The extreme rate alarms, Extreme Tachy and Extreme Brady, generated by the active alarm source,
either HR or Pulse, are set in Configuration Mode by adding a set value (the value) to the high and
low alarm limits.
You need to know which value has been configured for your monitor. Changing the high and low
alarm limits automatically changes the extreme alarm limits within the allowed range.
♦ To see the extreme rate alarms set for your monitor, in the Setup ECG menu, see the menu items
ExtrTachy and ExtrBrady.
ECG Alarms Off Disabled
Be aware that your hospital department may have decided to disable the setting ECG Alarms Off in
the monitor’s Configuration Mode. In this case, HR alarms cannot be switched off in Monitoring
Mode. If you try to switch off the HR alarms, you will see the message To activate enter
Config and enable Alarms Off.
HR Alarms When Arrhythmia Analysis is Switched Off
When arrhythmia analysis is switched off, only these HR-related alarms will be detected:
• the asystole alarm
• the ventricular fibrillation/tachycardia alarm
• the extreme tachycardia and extreme bradycardia alarms
• the high heart rate and low heart rate alarms.
Enhanced Asystole Detection
In order to improve alarming on asystole under certain conditions, you can set Asystole
Detect. in Configuration Mode to Enhanced. In enhanced mode an asystole alarm will be
suppressed for up to five seconds if a valid beat-to-beat Pulse is detected from a Pressure.
Extreme
Brady Limit
Low
Limit
High
Limit
Extreme
Tachy Limit
Extreme Brady
Extreme Tachy
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