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Seizures in newborns: The missing evidence
C Spagnoli1, G Ramantani2, F Pisani3
1Child Neuropsychiatry Unit, University-Hospital, Policlinico Umberto I, Rome, Italy.
Seizure
|August 26, 2025
Summary
Frequent or prolonged seizures in newborns may harm neurodevelopment, but causality is unproven. Defining a high seizure burden is crucial for better neonatal neurology and predicting outcomes.
Area of Science:
- Neonatal Neurology
- Neurodevelopmental Outcomes
- Clinical Neurophysiology
Background:
- Acute symptomatic seizures in newborns are linked to poor neurodevelopmental outcomes, but direct causality remains unclear.
- Clinical, electroencephalogram (EEG), and magnetic resonance imaging (MRI) variables are studied, yet reliable predictors of postneonatal outcomes are challenging to identify.
- The cerebrovascular and metabolic impacts of neonatal seizures are recognized contributors to adverse outcomes, particularly with prolonged or frequent seizure activity.
Purpose of the Study:
- To critically examine factors influencing the association between neonatal seizures and neurodevelopmental outcomes.
- To address the lack of consensus on defining a "high seizure burden" in newborns.
- To explore the need for additional predictive variables beyond seizure frequency and duration for improved neonatal management.
Main Methods:
- Review of existing clinical studies and experimental models concerning neonatal seizures.
- Analysis of cerebrovascular and metabolic effects associated with seizure activity.
- Examination of EEG and MRI data in the context of neonatal outcomes.
Main Results:
- Prolonged or frequent neonatal seizures show the strongest association with mortality or disability.
- A significant knowledge gap exists regarding the precise definition of a high seizure burden.
- Current predictive models may require additional variables to enhance clinical decision-making.
Conclusions:
- Establishing causality between neonatal seizures and adverse neurodevelopmental outcomes requires further investigation.
- Developing evidence-based management strategies necessitates a clear definition of seizure burden and potentially new predictive factors.
- Further research in neonatal intensive care settings and experimental models is essential to refine understanding and improve patient care.
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