What indicates bacterial meningitis?

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Multiple Choice

What indicates bacterial meningitis?

In bacterial meningitis, the CSF pattern is driven by an acute bacterial infection provoking a strong neutrophilic response and by bacteria consuming glucose. So neutrophils in the CSF together with a decreased CSF glucose level are the most characteristic indicators. The neutrophil predominance reflects the rapid, acute inflammatory reaction to bacteria, while the low CSF glucose occurs because bacteria (and the activated neutrophils) use glucose and the blood-brain barrier is compromised, allowing more protein to enter. Eosinophils in CSF would point toward eosinophilic meningitis from parasitic infections or certain drug reactions, not typical bacterial infection. Lymphocytes in CSF are more characteristic of viral meningitis (or TB/fungal meningitis in different contexts) rather than acute bacterial meningitis.

In bacterial meningitis, the CSF pattern is driven by an acute bacterial infection provoking a strong neutrophilic response and by bacteria consuming glucose. So neutrophils in the CSF together with a decreased CSF glucose level are the most characteristic indicators. The neutrophil predominance reflects the rapid, acute inflammatory reaction to bacteria, while the low CSF glucose occurs because bacteria (and the activated neutrophils) use glucose and the blood-brain barrier is compromised, allowing more protein to enter.

Eosinophils in CSF would point toward eosinophilic meningitis from parasitic infections or certain drug reactions, not typical bacterial infection. Lymphocytes in CSF are more characteristic of viral meningitis (or TB/fungal meningitis in different contexts) rather than acute bacterial meningitis.

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