Related Experiment Video
Updated: Sep 10, 2025
Application of an Amplitude-integrated EEG Monitor Cerebral Function Monitor to Neonates
Published on: September 6, 2017
Seizures in newborns: The missing evidence
C Spagnoli1, G Ramantani2, F Pisani3
1Child Neuropsychiatry Unit, University-Hospital, Policlinico Umberto I, Rome, Italy.
Insights
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.
Abstract:
Although frequent or prolonged acute symptomatic seizures in newborns can be associated with adverse neurodevelopmental outcomes, this correlation does not establish causality. Identifying reliable postneonatal outcome predictors among the many clinical, EEG and MRI variables reported in clinical studies thus remains challenging. Nevertheless, the cerebrovascular and metabolic effects of seizures are well documented and likely contribute to poor outcomes. Prolonged or frequent seizures, in particular, have shown the strongest association with mortality or disability. However, no consensus exists on what constitutes a high seizure burden in newborns, as clinically meaningful definitions are lacking. Experimental models and clinical studies in neonatal intensive care settings may help address these knowledge gaps. Moreover, additional variables beyond seizure duration and frequency may be required to develop predictive models that support evidence-based and clinically meaningful management changes. In this review, we critically examine these factors to contribute to this ongoing debate in neonatal neurology.
Related Concept Videos
01:13Seizures: Classification
Seizures are typically classified into two main categories: focal and generalized seizures.
Focal Seizures
Focal seizures originate from specific regions of the brain. These seizures are further sub-classified into two types:
01:24Epilepsy and Seizures: Overview
Various factors can trigger epilepsy, including genetic factors, brain damage, metabolic causes, and unknown etiology. Diagnosis of epilepsy involves electroencephalography (EEG), which...
01:25Overview of Synapses
01:08Antiepileptic Drugs: Sodium Channel Blockers
Sodium channel blockers modulate ion channels, particularly voltage-gated sodium channels. They block only sodium ion movement.
Among the most commonly prescribed antiepileptic drugs are...
01:20Antiepileptic Drugs: Modulators of Neurotransmitter Release Mediated by SV2A Protein
SV2A is a transmembrane glycoprotein located predominantly in the brain, modulating the release of neurotransmitters for neuronal communication. Both levetiracetam and brivaracetam exhibit a high affinity for...