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Related Experiment Videos

Emergent EEG: indications and diagnostic yield.

P N Varelas1, M V Spanaki, L Hacein-Bey

  • 1Department of Neurology, Medical College of Wisconsin, Milwaukee, USA. pvarelas@mcw.edu

Neurology
|September 10, 2003
PubMed
Summary

Emergent electroencephalograms (EEGs) are frequently ordered for altered mental status but rarely diagnose status epilepticus (SE). A history of cardiac or respiratory arrest is the only independent predictor for SE in emergent EEG testing.

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Area of Science:

  • Neurology
  • Clinical Neurophysiology

Background:

  • Emergent electroencephalograms (EmEEG) are critical for rapid neurological assessment.
  • Evaluating the diagnostic yield and predictive factors for EmEEG is essential for optimizing its use.

Purpose of the Study:

  • To analyze the utilization and diagnostic outcomes of EmEEG.
  • To identify predictors for status epilepticus (SE) in patients undergoing EmEEG.

Main Methods:

  • Retrospective review of all EmEEG reports within 1 hour of order over 52 months.
  • Analysis of indications for EmEEG and confirmed diagnoses, focusing on SE.

Main Results:

  • 261 EmEEG (12.8% of all EEGs) were performed.
  • Altered mental status/coma was the most common indication (17.6%).

Related Experiment Videos

  • SE was ruled out in 60.2% of cases, with only 10.7% confirmed.
  • Cardiac or respiratory arrest history independently predicted SE (OR 6.8 [95% CI, 2.7-16.9]).

    • Conclusions:

    • EmEEG is frequently utilized for altered mental status but has a low yield for diagnosing SE.
    • History of cardiac or respiratory arrest is a key factor in predicting SE in emergent settings.