Fukuda Denshi DSL-8001, Руководство по эксплуатации

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Pacemaker Pulse
The artificial pacemaker pulse can be superimposed on the ECG waveform and
displayed in yellow color. During waveform printing, the displayed artificial
pacemaker pulse will be also printed along with the waveform.
Pacemaker Pulse Detection Algorithm
(1)
(2)
(3)
(1) ECG Signal Input
ECG signal will be input.
(2) Pacemaker Pulse Detection and Suspension of QRS Detection
Detects the high frequency and large amplitude signal as
pacemaker pulse.
When pacemaker pulse is detected, QRS detection will be
suspended for fixed amount of time to avoid erroneous detection
of pacemaker pulse as QRS.
(3) Cancelling of Arrhythmia Detection
Arrhythmia detection of the waveform following the pacemaker
pulse will be cancelled.
WARNING
Rate meters may continue to count the pacemaker rate during
occurrences of cardiac arrest. Do not rely entirely upon rate
meter alarms. Keep pacemaker patients under close
surveillance.
CAUTION
Precautions about Pacemaker Pulse Detection
 There are some cases when the pacemaker pulse can not be
detected depending on the pacemaker type, pulse voltage,
pulse width, electrode lead type (unipolar, bipolar), or
electrode placement which causes the pacemaker pulse
amplitude to decrease and disables the pacemaker pulse
detection.
 If signals similar to a pacemaker pulse are present, such as
electric blanket noise or excessive AC frequency noise, these
may be erroneously detected and displayed as a pacemaker
pulse.
 When a spontaneous QRS overlaps pacemaker pulse (e.g.
fusion beat, etc.), the heart rate will decrease because QRS
detection cannot be properly performed.
 If a pacemaker pulse is continuously detected due to AC
frequency interference, QRS detection will be suspended
and the heart rate will be reduced.