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Chapter 6: Arrhythmia Monitoring
The following table describes available beat classifications:
Arrhythmia
ECG ASYSTOLE
VFIB ARRHYTHMIA
VTAC ARRHYTHMIA
RUN ARRHYTHMIA
AIVR ARRHYTHMIA
BIGEMINY ARRHYTHMIA
TRIGEMINYARRHYTHMIA
COUPLET ARRHYTHMIA
TACHY ARRHYTHMIA
BRADY ARRHYTHMIA
AFIB ARRHYTHMIA
PAUS ARRHYTHMIA
FREQUENT PVCs
Premature Ventricular Contraction (PVC) is ectopic impulse originating from ventricles, before
the normal electrical activation sequence of the heart has occurred.
The PVC value is shown in ECG parameter window and updated every 5 seconds.
When ARR analysis is enabled, current PVC values are trended every 20 seconds and can be
reviewed on the TREND window.
Event and Beat Classification
5 seconds pass without the detection of valid QRS complex.
Ventricular Fibrillation: The monitor identifies a sinusoidal
waveform with fibrillation characteristics. (Certain ventricular
tachycardias have sinusoidal waveforms closely resembling those
of ventricular fibrillation. Because of the similarity of these
waveforms, the monitor may classify such types of ventricular
tachycardia as ventricular fibrillation . )
Ventricular Tachycardia: N or more PVC's are detected in a time
interval T= (60*(N-1))/R, where N is defined as the VTAC count
and R is defined as the VTAC rate.
Ventricular Run: Series of 3 to N-1 consecutive PVCs with a beat
to beat rate ≥ the VTAC rate.
Accelerated Idioventricular Rhythm: Series of 3 or more PVCs
with a beat rate less than the VTAC rate.
Ventricular Bigeminy: Sequence of beats with the pattern :
normal, PVC, normal, PVC, normal, PVC
Ventricular Trigeminy: Sequence of beats with the pattern :
normal, normal, PVC, normal, normal, PVC
Ventricular Couplet: Sequence of beats with the pattern :
normal, PVC, PVC, normal, PVC, PVC
Sinus Tachycardia: HR ≥ TACHY rate setting. A PVC or other
abnormal beat breaks the analysis sequence and restarts analysis.
Sinus Bradycardia: HR≤ BRADY rate setting. A PVC or other
abnormal beat breaks the analysis sequence and restarts analysis.
Atrial Fibrillation: Formation of QRS complexes in irregular
intervals
Actual R-R interval more than 2.1 times of the average R-R
interval.
More than N (event count set in the ARR SETUP WINDOW)
PVC per minute.
6-4
User Manual
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