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Artifacts

2

QuestionAnswer
Glossokinetic Potentials Normal, Reproduced to verify (lalala). Mistaken for slow wave abnormal & FIRDA. Produced by the tongue just like eyes, except opposite polarity. Back of tongue is positive compared to the tip in frontal and temporal leads. Theta or Delta and about 75uV.
What are 'O' waves? Eye blinks or EC in infants that produce large slow wave responses.
Breach Artifact Localized, increased amplitude of high and low frequencies occurring over a skull defect such as that caused by craniotomy, burr hole, trauma, etc. Beta may appear quite sharp and mistaken for epileptiform activity.
IV Drip Artifact Rare. Looks like small sharp or spike and wave but precise timing like EKG and other artifacts of the like.
Intraventricular Artifact High amplitude sharps or spikes that resemble EKG in timing, but are usually generalized and can make a record unreadable.
Roving EM Slow wave EM only.
Saccadic Lateral EMs Lateral EM produce horizontal small frontal spikes.
Asymmetric EM Usually prosthetic eye or blindness on attenuated side.
Feeding Pump Artifact Circular occipital/temporal slow waves.
Walking Artifact Looks like the opposite of biphasic or triphasic waves. Occurs in the occipito-tempro-posterio head regions.
Back Patting Artifact Looks like electrode artifact. Rhythmic and sharp.
Pulse Artifact Slow waves that follow EKG and is commonly seen at the fontanelle in neonates.
Created by: kmburg5840