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Primary prevention of cryptococcal meningitis by fluconazole in HIV-infected patients

V J Quagliarello1, C Viscoli, R I Horwitz

  • 1Department of Internal Medicine, Yale University School of Medicine, New Haven, CT 06510, USA.

Lancet (London, England)
|March 4, 1995
PubMed

Insights

Oral fluconazole significantly reduces the risk of a first episode of cryptococcal meningitis in HIV-infected patients with low CD4 counts. This antifungal medication offers substantial protection against this serious opportunistic infection.

Area of Science:

  • Infectious Diseases
  • HIV/AIDS Research
  • Mycology

Background:

  • Cryptococcal meningitis is a life-threatening opportunistic infection in HIV-infected individuals, particularly those with CD4 cell counts below 250/microL.
  • Prophylaxis against opportunistic infections is crucial for managing HIV/AIDS patients.

Purpose of the Study:

  • To investigate the efficacy of oral fluconazole in preventing the initial occurrence of cryptococcal meningitis among HIV-infected patients.
  • To determine if fluconazole exposure is associated with a reduced risk of cryptococcal meningitis in a vulnerable HIV-positive population.

Main Methods:

  • A case-control study was conducted involving HIV-infected patients with CD4 counts < 250/microL.
  • Cases were patients who developed cryptococcal meningitis, while controls had negative cerebrospinal fluid cryptococcal tests and were matched for demographic and clinical factors.
  • Exposure to oral fluconazole in the six months preceding diagnosis was assessed.

Main Results:

  • A significantly lower proportion of cases (11%) compared to controls (36%) had received oral fluconazole.
  • Fluconazole exposure was associated with a 92% reduction in the risk of developing cryptococcal meningitis (matched odds ratio = 0.08, p = 0.035).
  • No significant differences were observed in baseline characteristics between cases and controls, except for fluconazole exposure.

Conclusions:

  • Oral fluconazole demonstrates significant protective efficacy against a first episode of cryptococcal meningitis in HIV-infected patients with CD4 counts < 250/microL.
  • While optimal dosing was not determined, findings suggest that non-daily fluconazole use can be effective for prevention.
  • These results support the consideration of fluconazole for primary prophylaxis against cryptococcal meningitis in this patient group.

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