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Published on: July 24, 2016
[Febrile convulsions and meningitis]
Insights
Routine lumbar punctures may not be necessary for infants experiencing their first febrile seizure. Clinical criteria alone can effectively identify meningitis, avoiding unnecessary procedures in many cases.
Area of Science:
- Pediatrics
- Neurology
- Infectious Diseases
Context:
- Febrile seizures are common in infants aged 6-18 months.
- Diagnosis of meningitis traditionally relies on clinical signs and lumbar puncture.
- Evaluating the necessity of lumbar puncture in first-time febrile seizures is crucial.
Purpose:
- To assess the diagnostic utility of clinical criteria for meningitis in children with first febrile seizures.
- To evaluate the effectiveness of peripheral white blood cell counts in diagnosing bacterial meningitis.
- To determine if routine lumbar puncture is warranted in this patient population.
Summary:
- A review of 100 clinical records of children (6-18 months) with first febrile seizures was conducted.
- Lumbar puncture was performed on 42 children, diagnosing meningitis in 4 (2 bacterial).
- Clinical criteria demonstrated 100% sensitivity and negative predictive value for meningitis, potentially avoiding 40% of lumbar punctures.
- Peripheral white blood cell counts showed low utility (50% sensitivity) for bacterial meningitis diagnosis.
Impact:
- Suggests that clinical assessment alone can be sufficient for managing first febrile seizures in infants.
- Highlights the potential to reduce invasive procedures like lumbar puncture, minimizing risks and healthcare costs.
- Informs clinical guidelines regarding the diagnostic workup for meningitis in young children presenting with febrile seizures.
Abstract:
A hundred clinical records of children between the ages of 6 and 18 months were examined. These previously healthy children, were hospitalized after having their first febrile seizure. Lumbar puncture were performed on 42 of them, showing the existence of meningitis in 4 cases, 2 of which were bacterial meningitis. Previously, clinical criteria for meningitis diagnosis were: alteration of general condition, irritability, vomiting, bulging fontanelle and meningeal signs; in these 4 cases, the clinical criteria were noticed. In 17 puncture patients who did not fulfil clinical criteria, the cerebrospinal fluid was normal. The sensitivity and negative predictive value of these clinical criteria were 100% and their application in this series would have avoided the lumbar puncture in 40% of cases. The utility of peripheral white blood cell counts following TOOD's patterns for the bacterial meningitis diagnosis was low, with a sensibility of 50%. We conclude that the lumbar puncture in these children should not be performed as a routine measure.
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