7
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64
Arrhythmia Analysis
Definition, etc.
This section explains the arrhythmia analysis, alarm setup procedure, etc.
Arrhythmia Definition
The arrhythmia detection is performed by learning the normal waveform of the patient and by
determining VPC by comparing the waveform (QRS pattern) and R-R interval for each heartbeat.
A pattern matching is performed with each VPC detected from R-R interval, QRS amplitude, QRS area,
QRS polarity, etc., and after discriminating the noise from VPC, it is established as VPC.
●
QRS Classification
The QRS analysis is performed by comparing with the learned waveform and QRS pattern matching.
N (Normal)
Normal QRS beat
V (VPC)
Ventricular extrasystole
? (Undetermined beat)
Learning arrhythmia, or unmatched beat
P (Pacing beat)
Pacing beat
F (Fusion beat)
Fusion beat of pacing and spontaneous beat
S (SVPC)
Supraventricular extrasystole
●
Arrhythmia Type
The alarm is generated according to the arrhythmia classification of a normal QRS and VPC.
Type Meaning
Detection
Criteria
ASYSTOLE Cardiac
Arrest
Cardiac arrest is detected for more than the
preprogrammed time.
VF Ventricular
Fibrillation
A random, rapid electrical activity of the heart is
detected.
VT Ventricular
Tachycardia
9 or more continuous ventricular beats are detected.
(HR: 140bpm/120bpm or over)
SLOW VT
9 or more continuous ventricular beats are detected.
(HR: 140bpm/120bpm or below)
TACHY
Tachycardia
HR is over the upper alarm limit.
BRADY
Bradycardia
HR is below the lower alarm limit.
RUN Consecutive
VPC
Continuous VPC exceeding the preprogrammed value is
detected.
COUPLET
Couplet Ventricular
Extrasystole
2 continuous VPC beats are detected.
PAUSE
Cardiac arrest exceeding the preprogrammed value is
detected.
BIGEMINY
Ventricular Bigeminy
3 or more continuous QRS pattern of V-N is detected.
TRIGEMINY
Ventricular Trigeminy
3 or more continuous QRS pattern of V-N-N is detected.
FREQUENT Frequent
VPC
VPC exceeding the preprogrammed value is detected
within 1 minute.
Reference
Refer to “6. Parameter Setup –ECG–
●
HR Low Limit for VT” for setup of HR reference for VT
analysis.
Summary of Contents for DynaScope 7000 Series
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