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Electroencephalography in infants with periventricular leukomalacia: prognostic features at preterm and term age
E Biagioni1, L Bartalena, A Boldrini
1Stella Maris Scientific Institute, Division of Child Neurology and Psychiatry, University of Pisa, Italy.
Insights
Electroencephalography (EEG) in preterm infants with cystic periventricular leukomalacia is a valuable early diagnostic tool. Early EEG abnormalities predict motor and cognitive outcomes, but lose prognostic value by term age.
Area of Science:
- Neonatal neurology
- Neurophysiology
Background:
- Cystic periventricular leukomalacia (CPVL) is a severe white matter injury in preterm infants, leading to significant neurologic impairment.
- Understanding the prognostic indicators for neurodevelopmental outcomes in these infants is crucial.
Purpose of the Study:
- To investigate the diagnostic and prognostic value of electroencephalography (EEG) findings in preterm infants with CPVL.
- To correlate early EEG patterns with motor and cognitive outcomes.
Main Methods:
- EEG recordings were performed in 24 preterm infants with CPVL during the early postnatal period (first 2 weeks) and in 29 infants at term age.
- EEG data were compared between infants with CPVL and a control group.
- Correlation analysis was used to assess the relationship between EEG findings and neurological outcomes (cerebral palsy, cognitive function).
Main Results:
- Early postnatal EEG showed significant "dysmaturity" in infants with CPVL compared to controls.
- Early "dysmaturity" correlated with the occurrence of cerebral palsy in CPVL infants.
- Abnormal EEG transients in the early period showed a correlation with cognitive outcome.
- At term age, EEG abnormalities were more frequent in CPVL infants but lacked prognostic value.
Conclusions:
- Early postnatal EEG is a useful diagnostic and prognostic tool for preterm infants with white matter lesions like CPVL.
- The prognostic role of EEG diminishes by term age, suggesting its primary utility is in the early neonatal period.
Abstract:
Cystic periventricular leukomalacia represents the most severe white-matter lesion in preterm infants and its occurrence accounts for most cases of neurologic impairment in these subjects. Electroencephalographic (EEG) findings and their prognostic value in relation to motor and cognitive outcome were investigated in a group of preterm infants affected by different degrees of cystic periventricular leukomalacia. EEG recordings were carried out in the early postnatal period (first 2 weeks of life) on 24 infants and at term age on 29. In the early postnatal period, background EEG abnormalities ("dysmaturity") were significantly more apparent in affected infants than in a control group, and, among infants with cystic periventricular leukomalacia, this parameter related to the occurrence of cerebral palsy; moreover, at the same age, the incidence of abnormal EEG transients seemed to show a correlation with cognitive outcome. At term age, these latter abnormalities were significantly more apparent in neonates with cystic periventricular leukomalacia than in control subjects, but they did not show any prognostic value. In conclusion, these data indicate that, during the early postnatal period, the EEG is a useful diagnostic and prognostic tool for preterm infants with white-matter lesions, whereas at term age, the role of EEG tracings appears secondary.