Technical Problems: Difference between revisions
→Artefacts
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== | ==artifacts== | ||
[[Image:Noise_move.png|thumb| Movement | [[Image:Noise_move.png|thumb| Movement artifacts]] | ||
[[Image:ECG_Parkinson.png|thumb| Increasing movement | [[Image:ECG_Parkinson.png|thumb| Increasing movement artifacts in a Parkinson patient. The patient was in sinus rhythm! (which doesn't show on this short recording)]] | ||
[[Image:BaselineDrift.png|thumb| Baseline drift. The amplifier in the ECG machine has to re-find the 'mean'. This often occurs right after lead connection and after electric cardioversion.]] | [[Image:BaselineDrift.png|thumb| Baseline drift. The amplifier in the ECG machine has to re-find the 'mean'. This often occurs right after lead connection and after electric cardioversion.]] | ||
[[Image:cardioversion_from_afib.jpg|thumb| Cardioversion from atrial fibrillation to | [[Image:cardioversion_from_afib.jpg|thumb| Cardioversion from atrial fibrillation to sinus rhythm, with clear baseline drift.]] | ||
[[Image:electric_noise_ecg.png|thumb| Electrical interference from a nearby electrical appliance. A typical example is a 100 Hz background distortion from fluorescent lights. Not to be confused with [[arrhythmias#atrial fibrillation|atrial fibrillation]].]] | [[Image:electric_noise_ecg.png|thumb| Electrical interference from a nearby electrical appliance. A typical example is a 100 Hz background distortion from fluorescent lights. Not to be confused with [[arrhythmias#atrial fibrillation|atrial fibrillation]].]] | ||
[[Image:electric_noise_ecg2.jpg|thumb| Another example of an artefact caused by an electrical appliance. The patients rhythm is regular. This strip shows 10 QRS complexes.]] | [[Image:electric_noise_ecg2.jpg|thumb| Another example of an artefact caused by an electrical appliance. The patients rhythm is regular. This strip shows 10 QRS complexes.]] | ||
artifacts (disturbances) can have many causes. Common causes are: | |||
*Movement | *Movement | ||
*Electrical interference | *Electrical interference | ||
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