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7.5 Changing ECG Settings
See Section 5.3 for details.
7.6 About Arrhythmia Detection and Template Learning
ARR:
ECG arrhythmia analysis
ARR switch:
the switch of ECG arrhythmia detection. The default is OFF.
Extra ARR Learning:
indication of ARR learning status or activating ARR learning manually.
When ARR is set to “ON”, the device will start to learn the regular ECG signal automatically for ARR detection
and icon “
” will be displayed. The device will finish the learning after a certain period, and the icon will
become “
”. The detected arrhythmia waveform will be displayed on the third or the last ECG waveform
display channel; If there is only one ECG waveform display channel, then the detected arrhythmia waveform will
be re-displayed and frozen on this channel for 8 seconds. The arrhythmia waveform will be re-displayed on the
cascaded waveform channel if there is s single Lead of ECG signal displayed with cascaded waveform channels.
Note: Because Arrhythmia detection needs a template ECG waveform as reference which is a piece of normal ECG
waveform with regular rhythm and stable amplitude, it is necessary to re-activate the template learning when
the patient is changed, or the Arrhythmia detection is incorrect. For better using the Arrhythmia detection, it is
recommended to wait for a clean and stable ECG waveform before starting ARR detection during the monitoring.
Note: when the device is restarted, the Arrhythmia detection is reset to its default status.
☞
During Arrhythmia detection, incorrect detection might occur if the non-ECG waveforms (e.g. square or
triangle waveform) appear.
☞
Before starting the 1mV calibration signal, please turn off the Arrhythmia detection.
☞
During Arrhythmia detection, the template learning is very important. The device requires a group of stable
QRS complex waveforms to build up this template. If the system detects Arrhythmia incorrectly, please re-
activate the template learning and obtain the correct template.
The arrhythmia analysis program is intended to detect ventricular arrhythmias. It is not designed to detect 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.
Take care to initiate template relearning only during periods of normal rhythm and when the ECG signal is relatively
noise-free. If template learning takes place during ventricular rhythm, the ectopics may be incorrectly learned as
the normal QRS complex. This may result in missed detection of subsequent events of V-Tach and V-Fib.