Pharmacokinetics of polymyxin B in an infant with multidrug-resistant Klebsiella pneumoniae bacteremia

Pediatr Infect Dis J. 2011 Jun;30(6):537-9. doi: 10.1097/INF.0b013e318207a7c1.

Abstract

We report our experience with a 9-month-old infant treated with intravenous polymyxin B for multidrug-resistant Klebsiella pneumoniae bacteremia. Serial blood samples were obtained at steady state and serum drug concentrations were determined using a validated liquid chromatography-mass spectrometry method. The elimination half-lives of polymyxin B1 and isoleucine-polymyxin B1 were found to be 3.1 and 4.7 hours, respectively.

Publication types

  • Case Reports
  • Research Support, N.I.H., Extramural

MeSH terms

  • Anti-Bacterial Agents / administration & dosage
  • Anti-Bacterial Agents / pharmacokinetics*
  • Bacteremia / drug therapy*
  • Bacteremia / microbiology
  • Chromatography, Liquid
  • Drug Resistance, Multiple, Bacterial*
  • Female
  • Half-Life
  • Humans
  • Infant
  • Infusions, Intravenous
  • Klebsiella Infections / drug therapy*
  • Klebsiella Infections / microbiology
  • Klebsiella pneumoniae / drug effects*
  • Klebsiella pneumoniae / isolation & purification
  • Mass Spectrometry
  • Polymyxin B / administration & dosage
  • Polymyxin B / pharmacokinetics*
  • Serum / chemistry

Substances

  • Anti-Bacterial Agents
  • Polymyxin B