Children with first episode of fever with seizure: is lumbar puncture necessary?

Area of Science:

• Pediatrics
• Infectious Diseases
• Neurology

Background:

• Fever with seizure is a common emergency presentation in children.
• While often due to febrile seizures, meningitis is a critical differential diagnosis.
• Early diagnosis and treatment of meningitis are vital to prevent severe outcomes.

Purpose of the Study:

• To determine the incidence of meningitis in children presenting with their first episode of fever and seizure.
• To evaluate the necessity of lumbar puncture across different pediatric age groups for fever with seizure.
• To identify risk factors and diagnostic indicators for meningitis in this population.

Main Methods:

• A prospective study was conducted in a pediatric emergency department.
• Included children aged 6 months to 5 years with a first episode of fever and seizure.
• Meningitis diagnosis based on cerebrospinal fluid (CSF) analysis (cytology, biochemistry, pathogen isolation).

Main Results:

• Overall meningitis incidence was 17% among 175 children.
• Bacterial pathogens were isolated from CSF in 4.5% of cases.
• Incidence was highest in the 6-12 month age group (30%), compared to 20% (12-18 months) and 5% (>18 months).
• Culture-proven bacterial meningitis occurred exclusively in the 6-12 month group, often without meningeal irritation signs.
• Signs of meningeal irritation demonstrated high specificity for diagnosing meningitis.

Conclusions:

• Meningitis incidence is significant in children with first-time fever and seizure.
• Lumbar puncture is strongly recommended for infants aged 6-12 months presenting with fever and seizure, even without meningeal irritation.
• This approach aids in the early detection of bacterial meningitis in high-risk infants.