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Early EEG predicts poststroke epilepsy.

Carla Bentes1,2, Hugo Martins3, Ana Rita Peralta1,2

  • 1EEG/Sleep Laboratory / Stroke Unit Department of Neurosciences and Mental Health (Neurology) Santa Maria Hospital - North Lisbon Hospitalar Centre Lisbon Portugal.

Epilepsia Open
|June 9, 2018
PubMed
Summary
This summary is machine-generated.

Early electroencephalography (EEG) abnormalities can predict the development of poststroke epilepsy within the first year. This finding is independent of stroke severity, offering valuable prognostic information for stroke patients.

Keywords:
EEGEpileptic seizuresIschemic strokePrediction

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Area of Science:

  • Neuroscience
  • Neurology
  • Clinical Neurophysiology

Background:

  • Electroencephalography (EEG) is crucial for identifying biomarkers of epileptogenesis and ictogenesis.
  • Limited research has explored the predictive value of EEG for poststroke seizures.
  • Predicting poststroke epilepsy is essential for patient management and prognosis.

Purpose of the Study:

  • To evaluate if early electroencephalography (EEG) abnormalities predict the occurrence of poststroke epilepsy.
  • To assess the independent predictive value of early EEG findings irrespective of stroke severity.

Main Methods:

  • Prospective study of 151 acute anterior circulation ischemic stroke patients followed for 1 year.
  • Electroencephalography (EEG) performed within 72 hours, daily for 7 days, and at discharge/follow-up.
  • Bivariate and multivariate analyses adjusted for age, NIHSS, and ASPECTS scores.

Main Results:

  • Poststroke epilepsy (unprovoked seizures) occurred in 16% of patients.
  • Early EEG background asymmetry and interictal epileptiform activity independently predicted poststroke epilepsy (P=0.043).
  • Periodic discharges on the first EEG predicted epileptiform activity during hospitalization (P=0.009).

Conclusions:

  • Early poststroke electroencephalography (EEG) is a valuable tool for predicting epilepsy in the first year.
  • EEG-based prediction of poststroke epilepsy is independent of clinical and imaging-based infarct severity.
  • These findings support the routine use of early EEG in stroke patients at risk for epilepsy.