Unusual EEG Artifact in Patients with DBS

Baldwin, Mark; Palka, Sydney V.; Leppla, Donna; Hollis, Bethany; Cott, Anne C. Van; Castellano, James F.

doi:10.1177/15500594211063710

Cited by 2 publications

(2 citation statements)

References 9 publications

(12 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…(A, B) Deep Brain Stimulator (DBS) artifact. Legend: bipolar (upper panel) and average referential (lower panel) montages show widespread, monomorphic activity without physiologic field and without evolution 31 . Settings: Filter: 1–70 Hz, Time base 30 mm/s, Sensitivity: 7 μV/mm.…”

Section: Artifactsmentioning

confidence: 99%

“…29 Left ventricular assist devices typically obscure the record with diffuse delta activity that may be misinterpreted as an ictal discharge. 30 Vagus nerve stimulators generate a high-amplitude periodic spike, 17 deep brain stimulators generate a widespread, and persistent high-amplitude activity 7,31 and responsive neurostimulators may produce paroxysmal spiky bursts. 32 Refer to Figure 17A,B.…”

Section: Internal (Implanted) Devicesmentioning

confidence: 99%

See 1 more Smart Citation

Normal variants and artifacts: Importance in EEG interpretation

Amin

Nascimento

Karakis

et al. 2023

Epileptic Disorders

View full text Add to dashboard Cite

Overinterpretation of EEG is an important contributor to the misdiagnosis of epilepsy. For the EEG to have a high diagnostic value and high specificity, it is critical to recognize waveforms that can be mistaken for abnormal patterns. This article describes artifacts, normal rhythms, and normal patterns that are prone to being misinterpreted as abnormal. Artifacts are potentials generated outside the brain. They are divided into physiologic and extraphysiologic. Physiologic artifacts arise from the body and include EMG, eyes, various movements, EKG, pulse, and sweat. Some physiologic artifacts can be useful for interpretation such as EMG and eye movements. Extraphysiologic artifacts arise from outside the body, and in turn can be divided into the environments (electrodes, equipment, and cellphones) and devices within the body (pacemakers and neurostimulators). Normal rhythms can be divided into awake patterns (alpha rhythm and its variants, mu rhythm, lambda waves, posterior slow waves of youth, HV‐induced slowing, photic driving, and photomyogenic response) and sleep patterns (POSTS, vertex waves, spindles, K complexes, sleep‐related hypersynchrony, and frontal arousal rhythm). Breach can affect both awake and sleep rhythms. Normal variants or variants of uncertain clinical significance include variants that may have been considered abnormal in the early days of EEG but are now considered normal. These include wicket spikes and wicket rhythms (the most common normal pattern overread as epileptiform), small sharp spikes (aka benign epileptiform transients of sleep), rhythmic midtemporal theta of drowsiness (aka psychomotor variant), Cigánek rhythm (aka midline theta), 6 Hz phantom spike–wave, 14 and 6 Hz positive spikes, subclinical rhythmic epileptiform discharges of adults (SREDA), slow‐fused transients, occipital spikes of blindness, and temporal slowing of the elderly. Correctly identifying artifacts and normal patterns can help avoid overinterpretation and misdiagnosis. This is an educational review paper addressing a learning objective of the International League Against Epilepsy (ILAE) curriculum.

show abstract

Section: Artifactsmentioning

confidence: 99%

Section: Internal (Implanted) Devicesmentioning

confidence: 99%

Normal variants and artifacts: Importance in EEG interpretation

Amin

Nascimento

Karakis

et al. 2023

Epileptic Disorders

View full text Add to dashboard Cite

show abstract

Deep Brain Stimulator (DBS) Artifact in the EEG of a Pediatric Patient

Gettings,

Stowe

2023

Clin EEG Neurosci

View full text Add to dashboard Cite

We report the first case of deep brain stimulator (DBS) artifact in the EEG of a pediatric patient. Our case is a 7-year-old male with bilateral globus pallidus interna (GPi) DBS for whom the EEG recorded a rhythmic 7.5 Hz theta activity on EEG related to DBS artifact. This artifact was also appreciated as a monochromatic invariable frequency band over 7.5 Hz on density spectral array (DSA). This rhythmic artifact may mimic an ictal pattern and should be recognized as artifact in order to avoid unnecessary treatment with anti-seizure medications (ASM).

show abstract

Unusual EEG Artifact in Patients with DBS

Cited by 2 publications

References 9 publications

Normal variants and artifacts: Importance in EEG interpretation

Normal variants and artifacts: Importance in EEG interpretation

Deep Brain Stimulator (DBS) Artifact in the EEG of a Pediatric Patient

Contact Info

Product

Resources

About