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Published on: January 19, 2019
Redefining outcome of first seizures by acute illness
Emily T Martin1, Tara Kerin, Dimitri A Christakis
1Center for Clinical and Translational Research, Seattle Children's Research Institute, Seattle, Washington, USA.
Insights
Gastrointestinal illness in children experiencing a first seizure is linked to a lower risk of recurrence, regardless of fever. This finding helps differentiate seizure types and predict outcomes.
Area of Science:
- Pediatric Neurology
- Infectious Diseases
- Epidemiology
Background:
- Childhood seizures are common, but the causes and recurrence risks for nonfebrile seizures are not well understood.
- Identifying specific illness associations is crucial for predicting seizure recurrence in children.
Purpose of the Study:
- To investigate the viral causes of infectious illnesses associated with first-time seizures in children.
- To determine the risk of seizure recurrence based on fever presence and illness type.
Main Methods:
- A prospective longitudinal study followed 117 children (6 months to 6 years) for up to 5 years after their first seizure.
- Data collected via interviews and medical records; stool, serum, and CSF samples analyzed for viral pathogens.
- Seizure types (febrile, nonfebrile-illness, unprovoked) and associated illnesses were documented.
Main Results:
- Acute gastroenteritis was more common in children with nonfebrile-illness seizures (47%) than febrile seizures (28%).
- No significant difference in seizure recurrence was observed based on fever presence at the first seizure.
- Children with acute gastroenteritis had a significantly lower risk of seizure recurrence (HR: 0.28) compared to other illnesses.
Conclusions:
- Gastrointestinal illness is a key factor distinguishing certain childhood seizures.
- Children presenting with gastrointestinal illness and seizures have a low recurrence rate and minimal neurological complications.
Background:
Seizures are common in children, but the causes and recurrence risk for children with a nonfebrile first seizure remain poorly understood.
Objective:
In a prospective longitudinal study of children who presented with a first-time seizure, we investigated the viral etiology of associated infectious illnesses and sought to determine the risk of recurrent seizures stratified by fever and type of illness.
Patients And Methods:
Children (aged 6 months to 6 years) were enrolled at the time of evaluation for their first seizure and followed monthly for up to 5 years. Seizure and illness data were collected through parent interviews and medical-record reviews. Stool, serum, and cerebrospinal fluid collected within 48 hours of the first seizure were evaluated for viral gastrointestinal pathogens.
Results:
Of the 117 children enrolled, 78 (67%) had febrile seizures, 34 (29%) had nonfebrile-illness seizures, and 5 (4%) had unprovoked seizures. Children with nonfebrile-illness seizures were more likely than those with febrile seizures to have acute gastroenteritis (47% and 28%, respectively; P = .05). No significant differences in seizure recurrence were found between children with or without a fever at first seizure. Children with acute gastroenteritis at first seizure, regardless of fever, had a lower risk of seizure recurrence compared with children with other acute illnesses (hazard ratio: 0.28; 95% confidence interval: 0.09-0.80).
Conclusions:
Our results confirm the role of gastrointestinal illness as a distinguishing feature in childhood seizures. Children with this distinct presentation have a low rate of seizure recurrence and few neurologic complications.
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