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Using ECG Alarms 6 ECG, Arrhythmia, and ST 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 to the high and low alarm
limits. You need to know what 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/ventricular tachycardia alarm
• the extreme tachycardia/extreme bradycardia alarms
• the high heart rate/low heart rate alarms.
HR Alarms When Arrhythmia Analysis is Switched On
WARNING When arrhythmia analysis is on, all yellow alarms connected with ECG are short (one-star). This
means that the yellow alarm lamp and the tones are active for a configured number of seconds only,
after which the flashing numeric and the alarm message remain for up to three minutes. Alarm
reminders are not provided for yellow arrhythmia alarms. Red alarms behave as usual.
ECG Safety Information
CAUTION Interference from instruments near the patient and ESU interference can cause problems with the
ECG wave. See the monitor specifications for more information.