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Refractory neonatal candidemia and high-dose micafungin pharmacotherapy

G Natarajan1, M Lulic-Botica, J V Aranda

  • 1Division of Neonatology, Children's Hospital of Michigan and Hutzel Women's Hospital, Detroit, MI 48201, USA. gnatara@med.wayne.edu

Journal of Perinatology : Official Journal of the California Perinatal Association
|September 25, 2009
PubMed
Abstract

Insights

Preterm neonates with refractory candidemia have worse outcomes, including higher mortality and lower fungal clearance rates. High-dose micafungin did not significantly improve outcomes in these critically ill infants.

Area of Science:

  • Neonatal Medicine
  • Infectious Diseases
  • Pharmacology

Background:

  • Candidemia in preterm neonates often leads to persistent positive blood cultures despite antifungal treatment.
  • Conventional antifungal therapy may be insufficient for invasive candidiasis in this vulnerable population.

Purpose of the Study:

  • To compare clinical profiles and outcomes of preterm neonates with candidemia responding to or refractory to conventional antifungals.
  • To evaluate the efficacy of high-dose micafungin in treating refractory candidemia.

Main Methods:

  • Retrospective chart review of 29 preterm infants with invasive candidiasis.
  • Comparison of demographic, microbiologic, and outcome data between early responders and refractory groups using statistical tests.

Main Results:

  • Refractory candidemia cases (n=19) showed longer antibiotic duration, more non-albicans infections, and less enteral feeding compared to early responders (n=10).
  • Mortality was significantly higher (53% vs 20%) and fungal clearance rates lower (63.1% vs 90%) in the refractory group.
  • Increased AST levels were observed post-micafungin treatment, but clinical significance is unclear.

Conclusions:

  • Refractory candidemia in preterm infants is linked to prolonged antibiotic exposure, lack of enteral nutrition, and non-albicans species.
  • High-dose micafungin, combined with conventional antifungals, did not significantly improve outcomes in refractory cases, indicating a need for novel therapeutic strategies.

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