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Updated: Nov 17, 2025
Application of an Amplitude-integrated EEG Monitor Cerebral Function Monitor to Neonates
Published on: September 6, 2017
Neuromonitoring in Neonatal-Onset Epileptic Encephalopathies
1Department of Pediatrics and Pediatric Neurology, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany.
Insights
Neonatal neuromonitoring using electroencephalography (EEG) and amplitude-integrated EEG (aEEG) is crucial for identifying seizures in high-risk infants. While valuable, EEG/aEEG has limitations and requires long-term studies for better classification of neonatal epileptic encephalopathies.
Area of Science:
- Neonatal neurology
- Clinical neurophysiology
- Pediatric epilepsy
Background:
- Neonatal-onset epileptic encephalopathies (EE) have diverse causes and poor neurodevelopmental outcomes.
- Early neuromonitoring is vital for at-risk neonates.
- Electroencephalography (EEG) and amplitude-integrated EEG (aEEG) are key monitoring tools.
Purpose of the Study:
- To highlight the importance of EEG/aEEG in monitoring neonatal epileptic encephalopathies.
- To discuss the role of EEG/aEEG in hypoxic-ischemic encephalopathy (HIE) management.
- To emphasize the need for further research in classifying EE subtypes.
Main Methods:
- Utilizing EEG and aEEG for bedside monitoring of neonates.
- Analyzing EEG/aEEG data in neonates with HIE undergoing therapeutic hypothermia.
- Correlating EEG/aEEG findings with clinical outcomes and neuroimaging (cMRI).
Main Results:
- EEG/aEEG effectively identifies electrographic seizures and abnormal background activity.
- Burst suppression pattern in HIE neonates under hypothermia correlates with good outcomes in ~40% of cases.
- Prognostic specificity of EEG/aEEG is lower than cMRI; prolonged monitoring is recommended post-hypothermia.
Conclusions:
- EEG/aEEG is an essential adjunctive tool for monitoring neonatal epileptic encephalopathies and HIE.
- While specific genetic variants may show EEG patterns, general classification requires further long-term studies.
- Continued research is needed to define and classify electro-clinical patterns for improved diagnosis and management.
Abstract:
Considering the wide spectrum of etiologies of neonatal-onset epileptic encephalopathies (EE) and their unfavorable consequences for neurodevelopmental prognoses, neuromonitoring at-risk neonates is increasingly important. EEG is highly sensitive for early identification of electrographic seizures and abnormal background activity. Amplitude-integrated EEG (aEEG) is recommended as a useful bedside monitoring method but as a complementary tool because of methodical limitations. It is of special significance in monitoring neonates with acute symptomatic as well as structural, metabolic and genetic neonatal-onset EE, being at high risk of electrographic-only and prolonged seizures. EEG/aEEG monitoring is established as an adjunctive tool to confirm perinatal hypoxic-ischemic encephalopathy (HIE). In neonates with HIE undergoing therapeutic hypothermia, burst suppression pattern is associated with good outcomes in about 40% of the patients. The prognostic specificity of EEG/aEEG is lower compared to cMRI. As infants with HIE may develop seizures after cessation of hypothermia, recording for at least 24 h after the last seizure is recommended. Progress in the identification of genetic etiology of neonatal EE constantly increases. However, presently, no specific EEG changes indicative of a genetic variant have been characterized, except for individual variants associated with typical EEG patterns (e.g., KCNQ2, KCNT1). Long-term monitoring studies are necessary to define and classify electro-clinical patterns of neonatal-onset EE.
