Zoncare U30 - Baseline Drift

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8.1.3 Baseline Drift
Fig. 8.3 Baseline Drift Waveform Graph
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 patient 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.
 Let the patient not move or talk.
3）Electrode Cause:
 Check whether limb electrodes are installed too tightly, which makes the patient feel
uncomfortable,
 Check whether the electrode is loose or poorly connected.
 Check whether the metal part on the connection of the lead wire and electrode is rusty
or dirty.
 Make sure that all electrodes are of the same specification; mixed use of new and old
batteries will also cause interference.
If the interference can't be cleared out by the solutions above, please make sure whether
frequency filter is activated.