Bacterial Meningitis in Children and Adults Aged 2 to 50 Years
Bacterial meningitis in patients aged 2 to 50 years is an acute emergency. Prompt recognition and structured management are critical — this first-line protocol is designed specifically for this age group.
Clinical Scenario
This protocol applies to children and adults aged 2 to 50 years with suspected or confirmed bacterial meningitis. Management must be initiated rapidly, often before culture results are available.
Treatment Approach
The approach in this age group involves prompt intravenous antibiotic therapy combined with a corticosteroid — with specific guidance on the timing of the corticosteroid relative to antibiotics. An alternative antibiotic combination is available when indicated. The complete regimen, sequencing, and conditions for switching are in the full protocol.
Clinical Goal
The primary measure of treatment success is clinical improvement after 48 hours of appropriate therapy. Absence of improvement at this point warrants further evaluation.
References
- Children and adults 2 to 50 years of age
- Vancomycin plus ceftriaxone
- Alternative: meropenem plus vancomycin
- Because the etiology is not known at presentation, dexamethasone should be given before or at the time of initial antibiotics while awaiting the final culture results in all patients older than six weeks with suspected bacterial meningitis.
- Dexamethasone can be discontinued after four days or earlier if the pathogen is not H. influenzae or S. pneumoniae, or if CSF findings are more consistent with aseptic meningitis.
- Repeat LP is generally not needed but should be considered to evaluate CSF parameters in persons who are not clinically improving after 48 hours of appropriate treatment.
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