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BeneVision N1 Patient Monitor Operator’s Manual
8.6.1
Arrhythmia Safety Information
CAUTION
•
Since the arrhythmia detection algorithm sensitivity and specificity are less than 100%, sometimes
there may be some false arrhythmias detected and also some true arrhythmia events may not be
detected. This is especially true when the signal is noisy.
•
The ECG size and minimum QRS detection threshold settings affect arrhythmia detection and heart
rate calculation sensitivity.
•
If QRS amplitude is low, the monitor might not be able to calculate heart rate and false asystole calls
may occur.During the learning phase of the algorithm, arrhythmia detection may not be available.
So you should closely monitor patient condition during and for several minutes after the learning
phase to allow the algorithm to reach optimal detection performance.
8.6.2
Arrhythmia Events
This section lists all arrhythmia events and their criteria.
8.6.2.1
Lethal Arrhythmia Events
8.6.2.2
Nonlethal Arrhythmia Events
Arrhythmia message
Description
Asystole
No QRS complex detected within the set time interval in the absence of ventricular
fibrillation or chaotic signal.
V-Fib/V-Tach
A fibrillatory wave for 6 consecutive seconds.
A dominant rhythm of adjacent PVCs and the ventricular rate is greater than the V-tach rate
limit.
V-Tach
The number of consecutive PVCs is greater than or equal to the V-Tach PVCs limit, and the
ventricular rate is greater than or equal to the V-Tach rate limit.
Vent Brady
The number of consecutive PVCs is greater than or equal to V brady PVC limit and the
ventricular rate is less than the V brady rate limit.
Extreme Tachy
The heart rate is greater than the extreme tachycardia limit.
Extreme Brady
The heart rate is less than the extreme bradycardia limit.
Arrhythmia message
Description
R on T
R on T PVC is detected.
Run PVCs
More than two consecutive PVCs, but lower than the V brady PVCs limit, and the ventricular
rate is lower than the V-Tach rate limit.
Couplet
A Pair of PVCs detected in between normal beats.
Multiform PVC
Multiform PVCs detected in Multif. PVC's Window (which is adjustable).
WARNING
•
Heart rate reading may be affected by cardiac arrhythmias. Do not rely entirely on heart rate
alarms when monitoring patients with arrhythmia. Always keep these patients under close
surveillance.
•
The arrhythmia analysis program is intended to detect ventricular arrhythmias and atrial
fibrillation. It is not designed to detect all the atrial or supraventricular arrhythmias. It may
incorrectly identify the presence or absence of an arrhythmia. Therefore, a physician must analyze
the arrhythmia information with other clinical findings.
•
Atrial fibrillation (Afib) detection function is not intended for pediatric and neonatal patients.
•
Pacer not Capture and Pacer not Pacing detection function are not intended for pediatric patients.
