For suspected cryptococcal meningitis, which induction regimen is recommended?

For suspected cryptococcal meningitis, which induction regimen is recommended?

• A. Fluconazole monotherapy
• B. Amphotericin B (liposomal) plus flucytosine
• C. Voriconazole alone
• D. Amphotericin B deoxycholate alone

Answer: (B)

Induction therapy for cryptococcal meningitis is all about rapidly clearing the fungus from the central nervous system. The best induction regimen is amphotericin B (preferably the liposomal form) combined with flucytosine. Amphotericin B acts quickly and fungicidally in the CNS by disrupting fungal cell membranes, and flucytosine enters fungal cells to disrupt DNA and RNA synthesis. Together, they work synergistically to sterilize the CSF faster and improve survival compared with either drug alone or with fluconazole-based approaches. The liposomal formulation helps reduce kidney toxicity, making it feasible to complete the necessary treatment duration. After induction, consolidation with fluconazole follows, but the critical step is this combination therapy that achieves rapid CSF sterilization. Fluconazole monotherapy is too slow for induction, voriconazole alone isn’t the standard induction regimen, and amphotericin B deoxycholate without flucytosine misses the synergistic effect and has more toxicity.

Induction therapy for cryptococcal meningitis is all about rapidly clearing the fungus from the central nervous system. The best induction regimen is amphotericin B (preferably the liposomal form) combined with flucytosine. Amphotericin B acts quickly and fungicidally in the CNS by disrupting fungal cell membranes, and flucytosine enters fungal cells to disrupt DNA and RNA synthesis. Together, they work synergistically to sterilize the CSF faster and improve survival compared with either drug alone or with fluconazole-based approaches. The liposomal formulation helps reduce kidney toxicity, making it feasible to complete the necessary treatment duration. After induction, consolidation with fluconazole follows, but the critical step is this combination therapy that achieves rapid CSF sterilization. Fluconazole monotherapy is too slow for induction, voriconazole alone isn’t the standard induction regimen, and amphotericin B deoxycholate without flucytosine misses the synergistic effect and has more toxicity.