Abstract
Introduction: The purpose of this study was to define and establish the relationship of clinically diagnosed seizures with electroencephalographic (EEG) pattern and to determine the effective role of EEG in diagnosis of patients suffering from epileptic seizures.
Methods: We reviewed the charts of 615 patients with seizure disorder who had an electroencephalography performed between over three years. The data using EEG-findings was broken into the following nine study groups: I) normal, II) Generalized Slowing, III) Generalized Sharp and Slow waves, IV) Generalized Sharp and Slow waves with focal spikes, V) Focal Spikes, VI) focal sharp and slow waves, VII) Focal Slow waves, VIII) Generalized spike and IX)Generalized slow waves plus focal sharp waves. The role of EEGs in the diagnosis of seizures was evaluated by comparing the Clinical Neurological pattern of the cases with their EEG-findings.
Results: A total of 615 patients with male to female ratio of 1.5:1. Generalized tonic-clonic seizures were the most common type of seizures (47.6%), followed by partial seizures with secondary generalization (34.9%). Nocturnal seizures was present in 3.1% (n=19), absence seizures in 0.2%, myoclonic epilepsy in 0.7% and complex partial seizures in 5.1%. The relationship of various types of seizures with EEG-patterns showed that general concordance rate of 63.3%concordance and 36.7%discordance EEG findings.
Conclusions: That 55.57%patients were finally diagnosed with the EEG re-emphasizes its importance in the final diagnosis especially in classification of seizures.
Keywords: EEG-pattern; Epilepsy; Seizures.
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Corresponding Author
Osalusi B S
Neurology Unit, Department of Medicine, Onabisi Onabanjo University College of Medicine and Onabisi Onabanjo University Teaching Hospital, Sagamu, Ogun, Nigeria
Email: This email address is being protected from spambots. You need JavaScript enabled to view it.
DOI: https://dx.doi.org/10.18535/jmscr/v5i8.142
