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10.7.4.3 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. Enter the password if required. For more information, refer to 27.12The Authorization Setup Settings.
4. Set the threshold of desired arrhythmia 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.
10.7.4.4 Arrhythmia Threshold Range
10.7.4.5 Setting Thresholds for PVC-Related Alarms
PVC-related alarms are detected on the basis of the current PVC rate and the number of consecutive PVCs.
To set the required thresholds for PVC-related alarms, 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. Enter the password if required. For more information, refer to 27.12The Authorization Setup Settings.
4. 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.
Arrhythmia Threshold Range
Asystole Delay 3 s to 10 s
Tachy (HR High) 60 bpm to 295 bpm
Brady (HR Low) 16bpm to 120 bpm
Extreme Tachy 65 bpm to 300 bpm
Extreme Brady 15bpm to 115 bpm
Multif PVCs Window 3 beats to 31 beats
V-Tach Rate 100 bpm to 200 bpm
V Brady Rate 15 bpm to 60 bpm
V-Tach PVCs 3 beats to 99 beats
V Brady PVCs 3 beats to 99 beats
PVCs/min 1 to 100
Pauses/min 1 to 15
Pause Threshold 1.5s, 2.0s, 2.5s, 3.0s
AF/Irr Rhy End Time 0, 1 min, 2 min, 3 min, 4 min, 5 min, 10 min, 15 min, 30 min
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