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Updated: May 1, 2026
Preterm EEG: A Multimodal Neurophysiological Protocol
Published on: February 18, 2012
EEG, brain maturation, and the development of retinopathy of prematurity
Wojciech Podraza1, Hanna Podraza, Karolina Jezierska
1Department of Medical Physics, Pomeranian Medical University, Szczecin, Poland. podrazaw@pum.edu.pl
Insights
Central nervous system (CNS) immaturity, assessed by electroencephalography (EEG), correlates with retinopathy of prematurity (ROP) severity in premature infants. Delayed CNS maturation indicates a higher risk of severe ROP.
Area of Science:
- Neonatology
- Neuroscience
- Ophthalmology
Background:
- Central nervous system (CNS) development is intricately linked to retinal development.
- Premature infants are at higher risk for retinopathy of prematurity (ROP) due to immature retinal vasculature.
- ROP severity can be influenced by CNS maturation status.
Purpose of the Study:
- To investigate the relationship between electroencephalographic (EEG) measures of brain maturity and the severity of ROP in premature infants.
- To determine if CNS maturation delay can predict ROP development.
Main Methods:
- Video-electroencephalography (vEEG) was used to assess CNS maturity in 21 premature infants.
- Infants were categorized into two groups based on ROP severity: stage 3 or more (severe) and stage 2 or less (mild/none).
- A CNS maturity index (M) was calculated based on interburst interval elongation compared to normative data.
Main Results:
- Infants with severe ROP (stage 3+) exhibited a significantly higher median M value (1.07) compared to those with mild or no ROP (stage 2-, median M = -0.1).
- The difference in M values between the severe and mild/no ROP groups was statistically significant (p = 0.000948).
Conclusions:
- Delayed CNS maturation, as indicated by the M value, is associated with more severe ROP in premature infants.
- EEG-based assessment of CNS maturity may serve as a valuable tool for predicting ROP development and severity.
Objectives:
The factors that influence the central nervous system (CNS) development can affect either the retina or the brain cortex. Immaturity of the brain cortex reflects immaturity of the retina and vice versa. The immature retina is more vulnerable than the mature retina, and is therefore more likely to develop retinopathy of prematurity (ROP). The aim of this study was to compare electroencephalographic brain maturity with ROP severity.
Methods:
Twenty-one prematurely born infants were divided into two groups according to the severity of ROP. The first group included 12 infants with ROP stage 3 or more and the second group included nine infants with ROP stage 2 or less. We have proposed an index of CNS maturity (M) as a percentage of interburst interval elongation compared with the norm using video-electroencephalography (vEEG).
Results:
The median M value was 1.07 (range = 0.43-4.44) for infants with severe ROP and -0.1 (range = -1.0 to 1.45) for infants with mild or no ROP (p = 0.000948).
Conclusions:
The study revealed that CNS maturation delay expressed as M value was higher among infants with severe ROP than among infants with mild or no ROP. EEG examination in prematurely born infants may prove to be a useful tool for predicting ROP development.
