[Diagnosis and management of bacterial meningitis in the adult]

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Michel Wolff1

  • 1Service de réanimation médicale et des maladies infectieuses, hôpital Bichat Claude-Bernard, 75018, Paris. michel.wolff@bch.ap-hop-paris.fr

La Revue Du Praticien
|August 7, 2004
PubMed

Insights

Early diagnosis and treatment of bacterial meningitis are crucial to reduce severe outcomes. While fever is common, its absence in older adults necessitates vigilance for other symptoms like altered mental status or focal neurological signs.

Area of Science:

  • Infectious Diseases
  • Neurology
  • Microbiology

Context:

  • Bacterial meningitis is a critical medical emergency.
  • Prompt diagnosis and treatment are essential to minimize mortality and morbidity.
  • Clinical presentation can vary, particularly in elderly patients.

Purpose:

  • To highlight key clinical signs and diagnostic considerations in bacterial meningitis.
  • To discuss the implications of pre-hospital antibiotic administration on etiological diagnosis.
  • To emphasize the utility of advanced diagnostic techniques.

Summary:

  • Fever is the most sensitive sign but may be absent in the elderly.
  • Altered mental status and focal neurological signs are important indicators, especially in pneumococcal meningitis.
  • Cranial CT scans infrequently show mass effect, making lumbar puncture generally safe.

Impact:

  • Early antibiotic administration, while vital, can hinder culture-based etiological identification.
  • Novel methods like bacterial antigen detection and PCR assays improve diagnosis in pre-treated patients.
  • Timely and accurate diagnosis, supported by modern techniques, is key to effective meningitis management.

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