87
sites with medical alcohol, apply conductive cream on the sites evenly, conductive cream
on each electrode can't be cross-linked
Check whether the patient cable is too close to or intertwined with the power cord.
Check whether the metal part on the connection of lead wire and electrode is rusty or dirty,
if it is, please clean it.
Check whether the patient cable has poor contact, please replace a new cable and try
again.
If the interference can't be cleared out by the solutions above, please make sure whether
frequency filter is activated.
8.1.2 EMG Interference
Fig. 8.2 EMG Interference
1)Environment Cause:
Check whether the exam room is comfortable,
Check whether the indoor temperature is too low,
Check whether the bed is small and narrow.
2)Patient Cause:
Explain to the examinee that ECG examination is very simple, which will not injury his
or her body, or have sequelae;
Make the patient relax physically and mentally, and breathe gently.
Do not let the patient move or talk.
3)Electrode Cause:
Check whether limb electrodes are installed too tightly, which makes the patient feel
uncomfortable,
Check the metal part on the connection of the lead wire and electrode is rusty or dirty, if
it is, please clean it.