Examination of electroencephalography (EEG) parameters within 24 hours after the first seizure

Articles in Press

Document Type : Original Article

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ARUMS

10.22038/psj.2026.95000.1527

Abstract

Introduction: Abnormal EEG is a predictor of seizure relapse. Obtaining data related to the diagnosis and outcome of the first seizure is necessary for improving care for these patients. We aimed to examination of electroencephalography parameters within 24 hours after the first seizure attack.

Materials and Methods: This cross-sectional study was done on 91 patients with the first seizure attack who referred to Alavi Hospital in Ardabil in 2023 were included in the study. The necessary information including age, sex, etiology of seizure, type of seizure and routine and stimulation modalities with abnormal waves were collected.

Results: Of all patients, 47 (51.6%) were men and 44 (48.4%) were women with an average age of 38 years. According to the type of seizure in patients, in 69 cases (75.8%), it was generalized type. Electroencephalography (EEG) findings were reported as normal in 50 cases (54.9%). In patients with abnormal EEG, in 34 patients (82.9%) these waves were found in routine modality, 4 cases (9.8%) in Hyperventilation (HV) modality and other 3 cases (7.3%) in photic stimulation (Ph.S) modality. There was a significant relationship between EEG findings and the etiology as well as the type of seizure.

Conclusion: The results of this study showed that, in idiopathic cases, the most common EEG finding was normal, whereas in cases of hypoglycemia, the most common finding was non-epileptic abnormal waves. Furthermore, in focal seizures, the most common EEG finding was also non-epileptic abnormal waves.

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Journal of Patient Safety & Quality Improvement

Articles in Press, Accepted Manuscript
Available Online from 07 June 2026

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