Electrical interference artefact

If the baseline looks like it has become a thick marker pen, it may be due to interference from electrical devices. Nerve stimulators can also create a similar artefact with lots of spikes close together. If possible, eliminate the source of the artefact, or adjust the filters on your ECG machine.

Featured Example

References

Related

ECG Library (8)

Sort by:
TitleDate
ASCDESC
Show:
31230
Columns:
In the ECGquest archives, this ECG has been tagged with: - 12-Lead Electrical interference artefact Dr Smith's ECG Blog CC BY-NC
What are all these little spikes? 31305

This ECG is from an elderly woman who presented after a fall.

This ECG shows frequent artefact spikes due to a bladder stimulator implanted for her neurogenic bladder.

In the ECGquest archives, this ECG has been tagged with: - Dyspnoea 12-Lead Electrical interference artefact Normal Axis Normal PR Normal rate Regular Wide QRS RBBB ECG of the Week CC-BY-NC-SA
ECG of the Week – 22rd January 2018 – Interpretation 17471

This ECG is from a woman in her 70s who presented with a history of progressively worsening dyspnoea and peripheral oedema. Her past medical history included ischaemic heart disease and hypertension.

In the ECGquest archives, this ECG has been tagged with: - 12-Lead Electrical interference artefact ECG of the Week CC-BY-NC-SA
ECG of the Week – 13th June 2016 – Interpretation 7839