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Flucloxacillin associated neutropenia in children treated for bone and joint infections

J van den Boom1, J B Kristiansen, L M Voss

  • 1Starship Children's Health, Auckland City Hospital, Auckland District Health Board, Auckland, New Zealand.

Journal of Paediatrics and Child Health
|January 27, 2005
PubMed

Insights

Flucloxacillin use in children can cause acute neutropenia (low white blood cell count). This study highlights the need for cautious dosing and regular monitoring of neutrophil counts in pediatric patients.

Area of Science:

  • Pediatric Infectious Diseases
  • Pharmacovigilance
  • Hematology

Background:

  • Bone and joint infections are common in children.
  • Flucloxacillin is a frequently prescribed antibiotic for such infections.

Purpose of the Study:

  • To describe episodes of acute neutropenia in children treated with flucloxacillin.
  • To evaluate the safety profile of flucloxacillin in pediatric bone and joint infections.

Main Methods:

  • Retrospective chart audit of eight pediatric patients.
  • Analysis of neutropenia onset, duration, and flucloxacillin dosage.

Main Results:

  • Eight children developed neutropenia attributed to flucloxacillin.
  • Neutropenia onset averaged 27 days; neutrophil counts normalized within 2-9 days.
  • Two children were asymptomatic; average flucloxacillin dose was 65% of recommended maximum.

Conclusions:

  • Flucloxacillin use in children warrants greater caution.
  • Dosing guidelines and clinical monitoring (neutrophil counts) require reassessment.
  • No serious sequelae were observed in the studied patients.
Abstract

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