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Related Experiment Videos

'Normal' CSF in bacterial meningitis.

I M Onorato, G P Wormser, P Nicholas

    JAMA
    |September 26, 1980
    PubMed
    Summary
    This summary is machine-generated.

    Early bacterial meningitis can present with normal cerebrospinal fluid (CSF) findings. Consider repeat lumbar punctures in febrile patients with suspected meningitis if initial CSF analysis is unremarkable.

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    Area of Science:

    • Neurology
    • Infectious Diseases

    Background:

    • Meningitis diagnosis typically relies on cerebrospinal fluid (CSF) analysis.
    • Normal CSF parameters (cell count, glucose, protein, Gram's stain) are often used to rule out meningitis.

    Observation:

    • This study reviewed 23 cases (4 presented, 19 from literature) of pyogenic meningitis.
    • These patients initially presented with seemingly normal CSF.
    • This highlights a potential diagnostic challenge in early-stage meningitis.

    Findings:

    • Minimal or absent initial CSF abnormalities can occur in early or developing bacterial meningitis.
    • A normal initial CSF analysis does not reliably exclude pyogenic meningitis.
    • The study identified a pattern of normal CSF in a subset of bacterial meningitis cases.

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    Implications:

    • Clinicians should maintain a high index of suspicion for meningitis even with normal initial CSF results.
    • Repeated lumbar puncture and CSF examination within 24 hours are crucial for febrile patients with persistent meningitis symptoms.
    • This underscores the importance of serial CSF analysis in diagnosing meningitis, especially in its early stages.