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Case Commentary: Intraventricular polymyxin B—small steps, big questions

Nitin Das Kunnathu Puthanveedu, Adarsh Bhimraj

Research output: Contribution to journalArticlepeer-review

Abstract

Carbapenem-resistant gram-negative ventriculitis is a life-threatening infection with limited treatment options. H. Jiang, Y. Hu, J. Cai, J. Zhang, et al. (Antimicrob Agents Chemother 70:e00943-25, 2026, https://doi.org/10.1128/aac.00943-25) describe two patients with this condition who were successfully treated with intraventricular polymyxin B. Their report highlights uneven antibiotic distribution within the ventricles, the influence of cerebrospinal fluid drainage on intraventricular drug concentrations, and cure with intraventricular polymyxin B alone. These findings raise important questions about optimal intraventricular antimicrobial dosing and whether concurrent intravenous therapy is needed in healthcare-associated ventriculitis.

Original languageEnglish (US)
Article numbere01527-25
Pages (from-to)e0152725
JournalAntimicrobial Agents and Chemotherapy
Volume70
Issue number3
DOIs
StatePublished - Mar 4 2026

Keywords

  • HCAVM
  • healthcare-associated ventriculitis and meningitis
  • intraventricular therapy
  • pharmacokinetics
  • polymyxins
  • ventriculitis
  • Humans
  • Middle Aged
  • Male
  • Polymyxin B/therapeutic use
  • Microbial Sensitivity Tests
  • Cerebral Ventriculitis/drug therapy
  • Female
  • Aged
  • Anti-Bacterial Agents/therapeutic use

ASJC Scopus subject areas

  • Pharmacology
  • Pharmacology (medical)
  • Infectious Diseases

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