Antifungal use influences Candida species distribution and susceptibility in the intensive care unit

Pierre Fournier1, Carole Schwebel, Danièle Maubon

  • 1Parasitology-Mycology Laboratory, Infectious Agent Department, Albert Michallon University Hospital and Joseph Fourier University, Grenoble, France. pfournier@chu-grenoble.fr

Abstract

Insights

Antifungal drug use in intensive care units (ICUs) significantly impacts Candida species distribution and susceptibility. Increased use of certain antifungals correlated with rising minimum inhibitory concentrations (MICs) in Candida isolates.

Area of Science:

  • Medical Mycology
  • Infectious Diseases
  • Clinical Pharmacy

Background:

  • Antifungal prescription patterns have evolved over the past decade.
  • The clinical impact of these changes on Candida spp. remains unclear.

Purpose of the Study:

  • To evaluate the effect of antifungal drug consumption on the distribution and drug susceptibility of Candida species.
  • Study conducted in a French intensive care unit (ICU).

Main Methods:

  • Measured antifungal drug use in defined daily doses per 1000 hospital days (DDDs/1000HD).
  • Determined Candida spp. distribution and antifungal drug minimum inhibitory concentrations (MICs) over a 6-year period (2004-2009).
  • Utilized statistical analyses to correlate antifungal use with changes in Candida distribution and MICs.

Main Results:

  • Candida parapsilosis distribution significantly increased from 5.7% to 12.5% (2004-2009).
  • Increased caspofungin use correlated with higher caspofungin MICs in Candida parapsilosis and Candida glabrata.
  • Amphotericin B and fluconazole use also showed correlations with changes in their respective MICs for Candida species.

Conclusions:

  • Antifungal drug consumption in ICUs is linked to significant shifts in Candida spp. distribution.
  • Changes in antifungal prescribing practices are associated with altered drug susceptibility patterns in Candida isolates.

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