10 - 14 BeneVision N22/N19 Patient Monitor Operator’s Manual
• If any of lethal arrhythmia alarms is switched off, the ECG waveform area displays the “Lethals Off”
message.
• If you switch off all arrhythmia alarms, the monitor will not present arrhythmia alarms. Always keep
the patient under close surveillance.
10.6.4.3 Changing Arrhythmia Alarm Threshold Settings
You can change threshold settings for some arrhythmia alarms. When an arrhythmia violates its threshold, an
alarm will be triggered. To do so, follow this procedure:
1. Select the ECG numeric area or waveform area to enter the ECG menu.
2. Select the Arrhythmia tab → select the Threshold tab.
3. Set the threshold of desired arrhthmia alarms.
• The asystole delay time relates to ECG relearning. When heart rate is less than 30 bpm, it is
recommended to set Asystole Delay to 10 sec.
10.6.4.4 Setting PVC-Related Alarms Threshold
PVC-related alarms are detected on the basis of the current ventricular heart rate and the number of consecutive
PVCs.
To set the threshold of PVC-related alarm threshold, follow this procedure:
1. Select the ECG numeric area or waveform area to enter the ECG menu.
2. Select the Arrhythmia tab → select the More Threshold tab.
3. Adjust V-Tach PVCs, V-Tach Rate, V Brady PVCs, and V Brady Rate to set the threshold of desired PVC-
related alarms.
The following figure illustrates the conditions under which PVC alarms will be generated if V-Tach PVCs is set to
6, V-Tach Rate is set to 130, V Brady PVCs is set to 5, and V Brady Rate is set to 40.
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