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Viral meningitis is the most common form of meningitis and is often referred to as aseptic meningitis to indicate the absence of bacterial involvement. It is generally milder than bacterial meningitis, with symptoms including fever, headache, stiff neck, drowsiness, nausea, photophobia, and vomiting. Rarely, more severe manifestations or death may occur. Common causative agents include enteroviruses, particularly coxsackie A and B viruses and echoviruses, all members of the Enterovirus genus...
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Induction of Leptomeningeal Cells Modification Via Intracisternal Injection
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Meningitis.

Douglas Swanson1

  • 1University of Missouri, Kansas City; Division of Infectious Diseases, Children's Mercy Hospitals and Clinics, Kansas City, MO.

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Summary
This summary is machine-generated.

Blood cultures effectively identify bacterial meningitis pathogens in children before antibiotic treatment. Pretreatment may reduce cerebrospinal fluid culture positivity but doesn't impact cell counts, aiding diagnosis and treatment strategies.

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Area of Science:

  • Pediatric Infectious Diseases
  • Microbiology
  • Clinical Diagnostics

Background:

  • Bacterial meningitis remains a significant concern in pediatric populations.
  • Accurate and timely diagnosis is crucial for effective treatment and improved outcomes.
  • Understanding the impact of pre-diagnostic interventions on diagnostic tests is essential.

Purpose of the Study:

  • To evaluate the utility of blood cultures in diagnosing pediatric bacterial meningitis.
  • To assess the effects of antibiotic pretreatment on cerebrospinal fluid (CSF) analysis.
  • To review current guidelines regarding neuroimaging and adjunctive therapies for bacterial meningitis in children.

Main Methods:

  • Review of existing evidence on blood culture positivity in pediatric bacterial meningitis.
  • Analysis of studies examining the impact of antibiotic pretreatment on CSF cell counts and cultures.
  • Consensus-based recommendations and expert opinions on neuroimaging and home therapy.

Main Results:

  • Blood cultures demonstrate high recovery rates for causative organisms in untreated pediatric bacterial meningitis.
  • Antibiotic pretreatment minimally affects CSF cell counts but significantly reduces CSF culture positivity, particularly for Neisseria meningitidis.
  • Neuroimaging is not routinely required for initial evaluation in children without signs of brain herniation.
  • The role of dexamethasone in pneumococcal meningitis and neuroimaging in neonates is debated.
  • Home intravenous antimicrobial therapy is a viable option for select pediatric cases.

Conclusions:

  • Blood cultures are reliable for diagnosing bacterial meningitis in children prior to antibiotic administration.
  • Antibiotic pretreatment necessitates careful consideration of diagnostic test interpretation.
  • Current guidelines support a selective approach to neuroimaging and highlight potential for outpatient parenteral antimicrobial therapy.