The electroencephalogram (EEG) plays an important role in the clinical follow-up of children affected by subdural effusion secondary to Haemophilus influenzae meningitis, contributing to the evaluation of brain function and to the monitoring of response to treatment. The objective of this study was to analyze the results of EEGs performed before and after the appropriate treatment of this complication, highlighting its relevance in clinical management. A sample of 45 EEG(s) of children between 6 months and 5 years old, treated at the University Hospital of Brasília (HUB) and at a private hospital, between 2010 and 2023, was analyzed. The study was approved by the Research Ethics Committee of the Faculty of Medicine of the University of Brasília (CAAE: 93128718.8.0000.5558). The results of the EEGs were evaluated in terms of the changes observed before and after the treatment of subdural effusion. EEG findings performed in patients before treatment included: Localized or asymmetric lymphification, correlated with the location of subdural effusion, in 25 cases (55%); Slow-based activity: 12 cases (26.6%); presence of generalized or secondarily generalized epileptiform activity: five cases (11.11%); normal tracing: three cases (6.6%). After adequate treatment of subdural effusion, EEG normalization was observed in 18 cases (40%) for localized or asymmetric slowing, nine cases (20%) for slow-based activity, and two cases (4.4%) for epileptiform activity. Electroencephalographic monitoring allows the identification of alterations that indicate therapeutic progress, contributing to the direction of medical conduct and potential reduction of neurological sequelae.
Author Contributions
Conceptualization, C.N.A. and M.S.O.; methodology, C.N.A.; software, M.S.O.; validation, C.N.A. and M.S.O.; formal analysis, M.S.O.; investigation, M.S.O.; resources, C.N.A.; data curation, M.S.O.; writing—original draft preparation, M.S.O.; writing—review and editing, C.N.A.; visualization, M.S.O.; supervision, C.N.A.; project administration, C.N.A. All authors have read and agreed to the published version of the manuscript.
Funding
This research did not receive external funding.
Institutional Review Board Statement
The study was approved by the Research Ethics Committee of the Faculty of Medicine of the University of Brasília (CAAE: 93128718.8.0000.5558).
Informed Consent Statement
Informed consent was obtained from all subjects involved in the study.
Data Availability Statement
The data presented in this study are available in: https://pubmed.ncbi.nlm.nih.gov/38829972/ (accessed on 16 November 2025); https://pubmed.ncbi.nlm.nih.gov/40196100/ (accessed on 16 November 2025); https://www.sciencedirect.com/science/article/abs/pii/S002234765580234X (accessed on 17 November 2025); https://pubmed.ncbi.nlm.nih.gov/9528024/ (accessed on 18 November 2025).
Conflicts of Interest
The authors declare no conflicts of interest.
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