electrodes somewhere dry.
■ Check whether the ECG Lead is rusty, the plug is poorly connected, or the plug pin is broken due
to prolonged unplugging.
■ Check whether the ground wire is connected properly and whether there are any other instruments
nearby that could interfere with it.
■ The ECG module is defective.
Possible causes of the symptoms:
● Erratic and chaotic respiratory waveform
■ The impedance method is used to monitor breathing; too dry skin reduces the conductivity of the
electrodes, and a poor connection with the skin might result in erratic and chaotic respiratory
waveform.
■ The ECG socket is poorly connected.
■ The signal from breathing is quite sensitive. An involuntary movement of the body can result in
erratic waveform.
■ The ECG module’s functioning is unstable.
■ There is outside interference, and there isn’t a ground wire.
● Unstable or non-displayed values
■ As a result of the respiratory signal’s increased sensitivity and weak anti-interference capabilities,
it is better to let the patient lie down for calm state measurements because even a small movement
could produce a big and unstable value deviation.
■ There are no respiratory values even though the ECG appears to be fairly normal. The respiratory
signal is a weak signal, and dry skin or poor electrode connection nay lead to inconsistent values
or no display.
■ Oxidized or rusted ECG Lead can cause similar symptoms.
■ The ECG module is defective.
■ Outside interference, an ECG Lead that is too near to the power supply, the use of other high-power
instruments, not plugging in the ground wire, etc. may lead to respiratory confusion.
■ Small respiratory waveform
■ The respiratory waveform should be smoother sinusoidal waveform. If the waveform amplitude is
too tiny, check to see if the patient is resting straight and bent. If so, the signal is weaker and the
waveform amplitude lowers.
■ The patient is breathing weakly, and the respiratory waveform’s amplitude varies depending on
To Next Page
