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Clinical Characteristics and Prognosis of Neonatal Seizures

Journal of the Korean Pediatric Society 2003;46(12):1253-1259.
Published online December 15, 2003.
Clinical Characteristics and Prognosis of Neonatal Seizures
Chang Wu Kim, Chang Hwan Jang, Heng Mi Kim, Byung Ho Choe, Soon Hak Kwon
Department of Pediatrics, School of Medicine, Kyungpook National University, Taegu, Korea
신생아 경련의 임상적 양상 및 예후에 관한 고찰
김창우, 장창환, 김행미, 최병호, 권순학
경북대학교 의과대학 소아과학교실
Correspondence: 
Soon Hak Kwon, Email: shkwon@knu.ac.kr
Abstract
Backgroud : Seizures in the neonate are relatively common and their clinical features are different from those in children and adults. The study aimed to provide the clinical profiles of neonatal seizure in our hospital.
Methods
: A total of 41 newborns with seizures were enrolled in this study over a period of three years. They were evaluated with special reference to risk factors, neurologic examinations, laboratory data, neuroimaging studies, EEG findings, seizure types, response to treatment, and prognosis, etc.
Results
: The average age at onset of seizures was 6.1?.6 days and the majority of patients(42%) had multifocal clonic seizure and 24% had subtle seizure. Factors that are known to increase risk of neonatal seizures include abnormal delivery history, birth asphyxia, and electrolyte imbalance, etc. However, they remain obscure in about 20% of cases. More than 50 percent showed abnormal lesions on neuroimaging studies such as brain hemorrhage, periventricular leukomalacia, brain infarction, cortical dysplasia, hydrocephalus, etc. and 17 out of 32 patients showed abnormal electroencephalographic patterns. Phenobarbital was tried as a first line antiepileptic drug and phenytoin was added if it failed to control seizures. The treatments were terminated in the majority of patients during the hospital stay. The overall prognosis was relatively good except for those with abnormal EEG background or congenital central nervous system malformations.
Conclusion
: Neonatal seizures may permanently disrupt brain development. Better understanding of their clinical profiles and appropriate management may lead to a reduction in neurological disability in later childhood.
Key Words: Neonatal seizures, EEG, Phenobarbital


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