BeneVision N22/N19 Patient Monitor Operator’s Manual 10 - 15
■ If both V-Tach PVCs and V-Tach Rate are greater than or equal to the limits, a V-Tach alarm is generated.
■ If consecutive PVCs is lower than the V-Tach PVCs limit (6) but greater than 2, and the Vent rate is greater or
equal to the V-Tach Rate limit (130), a Nonsus V-Tach alarm is generated.
■ If consecutive PVCs is greater than or equal to the V Brady PVCs limit (5), and the Vent rate is lower than the
V Brady limit (40), a Vent Brady alarm is generated.
■ If both the V Brady PVCs and V Brady Rate are lower than the limits, but V Brady PVCs is greater than 2, a
Run PVCs alarm is generated.
■ If the V Brady PVCs and V Brady Rate are greater than or equal to limits, but the Vent rate is is lower than V-
Tach Rate (130), a Vent Rhythm alarm is generated.
10.6.5 Arrhythmia Alarms Timeout
Normally, an arrhythmia alarm is presented when an alarm condition is detected. However, there are certain
situations that can inhibit audible and visible alarm indications even though an alarm condition was detected.
For more information, see 10.6.5.1 Arrhythmia Alarm Chains and 10.6.5.2 Setting Arrhythmia Alarm Timeout
Period.
10.6.5.1 Arrhythmia Alarm Chains
If multiple alarms occur, announcing all of the detected alarm conditions would be confusing, and might hide a
more serious condition. So arrhythmia alarms are prioritized by alarm "chains".
The arrhythmia algorithm provides five arrhythmia alarm “chains”: a high priority alarm chain, three medium
priority chains, and an atrial fibrillation chain.
Asystole
V-Fib/V-Tach
V-Tach
Extreme Tachy
Extreme Brady
Nonsus V-Tach
Vent Rhythm
Run PVCs
Couplet
R on T
Pause
Pacer not Capture
Pacer not Pacing
Missed Beats
Tachy/Brady
HR High /
HR Low
Bigeminy
Trigeminy
Multiform PVCs
PVC
Priority (high to medium)
High priority alarm
(presented as soon as detected)
Vent Brady
Irr Rhythm/Irr
Rhythm End
Afib/Afib End
Pauses/min High
PVCs High
Afib chain
Medium priority chain
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