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Triphasic EEG pattern in bilateral paramedian thalamic infarction.

Gulay Kenangil1, Dilek Necioglu Orken, Destina Yalcin

  • 1Department of Neurology, Sisli Etfal Education and Research Hospital, Istanbul, Turkey. kenangil@superonline.com

Clinical EEG and Neuroscience
|December 3, 2008
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Summary

Bilateral paramedian thalamic infarction (BPTI) can show triphasic waves (TWs) on EEG. These specific EEG findings in BPTI may relate to consciousness levels and do not always indicate a poor prognosis.

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Area of Science:

  • Neurology
  • Neurophysiology

Background:

  • Bilateral paramedian thalamic infarction (BPTI) is a rare neurological condition.
  • BPTI is characterized by decreased consciousness, gaze abnormalities, and cognitive decline.

Observation:

  • This study presents two cases of BPTI with specific electroencephalogram (EEG) findings.
  • Triphasic waves (TWs) were observed on EEG during the acute stage of BPTI.

Findings:

  • Triphasic waves (TWs) are nonspecific EEG patterns seen in various conditions.
  • The presence of TWs in BPTI may correlate with the patient's level of consciousness.
  • TWs in the context of BPTI do not necessarily predict a poor prognosis.

Implications:

  • Understanding the significance of TWs in BPTI can aid in diagnosis and prognosis assessment.
  • Further research is needed to elucidate the precise relationship between TWs and consciousness in BPTI.
  • This finding contributes to the neurophysiological understanding of thalamic infarction syndromes.