GE CARESCAPE, Руководство пользователя

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ECG
Problem Solution
●
The ECG signal is too weak for the monitor to
detect.
●
The monitor is detecting atrial pacemaker artifact
or non-QRS features as beats.
If the monitor is alarming for low heart rate or
asystole, assess the QRS amplitude:
●
View all ECG leads to assess the amplitude of the
QRS complexes. To ensure correct HR readings,
a 0.5 mV QRS amplitude is recommended for a
normal ECG signal. If the QRS amplitude drops
below 0.5 mV or an abnormal QRS width occurs
(more than 120 ms), QRS detection may be
reduced, leading to false asystole alarms.
●
If necessary, reprep the skin and reposition the
electrodes.
●
Relearn ECG.
Arrhythmia monitoring
Arrhythmia monitoring warnings
WARNING
V Fib/V Tach should not be considered a substitute for the V
Tach arrhythmia alarm. Efforts to lower the V Tach alarm level
can result in missed ventricular tachycardia alarms.
WARNING — LOSS OR DETERIORATION OF ARRHYTHMIA DETECTION —
Automated arrhythmia analysis programs may incorrectly
identify the presence or absence of an arrhythmia. A
physician must therefore interpret the arrhythmia information
in conjunction with other clinical findings. Please take special
note of the following ECG waveform conditions:
●
Noisy waveforms. Noisy portions of ECG waveforms are
typically excluded from analysis. The exclusions are
necessary to reduce the occurrence of inaccurate beat
interpretations and/or rhythm alarms. If the excluded noisy
portions of the ECG waveform contain true arrhythmia
events, those events may remain undetected by the
system.
●
Beat amplitude and duration. Accurate detection and
interpretation of beats becomes increasingly difficult as
the amplitude and/or duration of those beats approach
the design limits of the analysis program. Thus, as beats
become extremely wide or narrow, or especially as beats
become small, arrhythmia interpretation performance may
degrade.
●
Other morphology considerations. Automated arrhythmia
detection algorithms are designed fundamentally to detect
significant changes in QRS morphology. If an arrhythmia
event is present and does not exhibit a significant change
from the patient’s predominant morphology, it is possible
for those events to remain undetected by the system.
2062971-001 CARESCAPE Modular Monitors 175