7 - 14 BeneVision N1 Patient Monitor Operator’s Manual
7.6.5.3 Arrhythmia Alarm Refractory Period
For the following eight alarms in medium priority chain, there is a 30-second refractory period. That is to say, if
the same alarm is not presented within 30 seconds after the previous alarm disappears.
â– Couplet
â– R on T
â– PVCs/min High
â– Multiform PVCs
â– PVC
â– Missed Beat
â– Pacer not Capture
â– Pacer not Pacing
7.7 ST Segment Monitoring
ST segment analysis is intended for adult, pediatric and neonatal patients. To use this feature, the N1 must be
labeled to support ST analysis, see 7.1ECG Introduction.
7.7.1 ST Safety Information
• ST segment deviation values may be affected by such factors as certain drugs or metabolic and
conduction disturbances.
• ST deviation is often calculated at a fixed offset from the J point. Changes in heart rate may affect ST.
• The significance of ST segment changes needs to be determined by a physician.
• This monitor provides information regarding changes in ST deviation levels. The clinical significance
of the ST level change information should be determined by a physician.
7.7.2 Enabling ST Monitoring
The ST monitoring function is disabled by default. Before you start ST monitoring, enable the ST function. To do
so, follow this procedure:
1. Select the ECG numeric area or waveform area to enter the ECG dialog.
2. Select the ST tab→ select the Setup tab.
3. Switch on ST Analysis.
Reliable ST monitoring cannot be ensured under the following situations:
â– You are unable to get a lead that is not noisy.
Alarm in medium
priority chain
Alarm in high priority chain Alarm light and alarm tone
Alarm in the same medium priority
chain, but with higher priority
Alarm light and alarm tone
The same alarm reoccurs During timeout period, alarm light and alarm tone
are disabled. When the timeout period is reached,
alarm light and alarm tone are reactivated.
Alarm in the same medium priority
chain, but with lower priority
During timeout period, alarm light and alarm tone
are disabled. When the timeout period is reached,
alarm light and alarm tone are reactivated.
Alarm in other medium priority chain Alarm light and alarm tone
Previous alarm Current alarm Alarm indication