Quality Issues and Artefact
LA/RA electrode reversal
- Thaler, MS (2018) - The Only EKG Book You'll Ever Need, 9th edn, Lippincott Williams and Wilkins
- Houghton, AR and Gray, D (2014) - Making Sense of the ECG: A Hands-on Guide, 4th edn, Taylor and Francis
- Grauer, K (2014) - ECG 2014 Pocket Brain, 6th edn, KG/EKG Press
- Wagner, GS and Strauss, DG (2013) - Marriott's Practical Electrocardiography, 12th edn, LWW
- Goldberger, A (2006) - Clinical Electrocardiography: A Simplified Approach, 9th edn, Elsevier
Groups of Signs
Variations: Quality Issues and Artefact
- Standard Calibration
- Chest compression artefact
- Double speed 50 mm/sec
- Wandering baseline
- Nonspecific baseline artefact
- Electrical interference artefact
- LA/RA electrode reversal
- LA/LL electrode reversal
- RA/LL electrode reversal
- RA/RL electrode reversal
- LA/RL electrode reversal
- LA/LL + RA/RL electrode reversals
- High V1/V2 misplacement
- Electrode Detachment
- Incorrect Machine Interpretation
- Transcutaneous pacing artefact
- Fistula artifact
This ECG is from a woman in her 50s who presented with chest pain and dyspnoea.
This ECG shows lead I is completely inverted due to electrode misplacement. The left and right arm electrodes have been swapped accidentally.
Where did they come from?
These ECGs were collected from Free Open Access Medical Education (#FOAMed) blogs, with the permission of their authors. You can find out more about each ECG's source by clicking on it.
Why are they here?
This is an experiment in digital curation. The idea is to collect resources to increase awareness and accessibility. Over time, more ECGs in the collection will be tagged to make it easier to find them and reused in new interactive quizzes.
How can I use these ECGs?
You can use these ECGs for your own learning, teaching or research - as long as you abide by the terms of each ECG's copyright licence as stipulated by the original author.