Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
Comparative Study
. 2011 Apr;49(4):1524-9.
doi: 10.1128/JCM.02260-10. Epub 2011 Jan 26.

Comparison of BD Bactec Plus Aerobic/F medium to VersaTREK Redox 1 blood culture medium for detection of Candida spp. in seeded blood culture specimens containing therapeutic levels of antifungal agents

Affiliations
Comparative Study

Comparison of BD Bactec Plus Aerobic/F medium to VersaTREK Redox 1 blood culture medium for detection of Candida spp. in seeded blood culture specimens containing therapeutic levels of antifungal agents

Stefan Riedel et al. J Clin Microbiol. 2011 Apr.

Abstract

Recovery of Candida spp. using the BD Bactec FX blood culture (BC) system (Bactec Plus Aerobic/F medium) and the VersaTREK system (aerobic Redox medium) was evaluated using seeded BC bottles with and without the addition of commonly used antifungal agents. BC bottles (n = 1,442) were each inoculated with 10 ml human whole blood and 0.1 ml of suspensions of Candida spp., with or without antifungal agents. BC bottles were incubated in the corresponding system for a maximum of 5 days. In the absence of antifungal agents, Bactec FX recovered 97.4% of Candida spp., and VersaTREK recovered 99.1% (P = 0.154). With regard to length of time to detection (LTD) and overall recovery, both systems had various levels of effectiveness in recovering C. glabrata. In bottles containing antifungal agents, Bactec FX recovered 83.1% of isolates, whereas VersaTREK recovered 50.7% of Candida spp. (P < 0.001). For BC bottles without the addition of antifungal agents, the median LTD for VersaTREK was 2.2 h faster than that of Bactec FX (P < 0.001). In the presence of antifungal agents, the Bactec FX recovery time was significantly faster than that of VersaTREK (median difference of 10.8 h, P < 0.001). We conclude that both systems have comparable abilities to recover Candida spp. from seeded blood cultures in the absence of antifungal agents. In the presence of therapeutic levels of commonly used antifungal agents, the Bactec FX system demonstrated a significantly greater recovery of various Candida spp., as well as a shorter LTD.

PubMed Disclaimer

Figures

Fig. 1.
Fig. 1.
Kaplan-Meier time-dependent analysis of the proportion (y axis) of positive blood culture bottles in the absence and presence of antifungal agent.

References

    1. Amsden G. W. 2005. Tables of antimicrobial agent pharmacology, p. 678–679 In Mandell G. L., Bennett J. E., Dolin R. (ed.), Mandell, Douglas, and Bennett's principles and practice of infectious diseases, 6th ed. Elsevier, Inc., Philadelphia, PA
    1. Andes D., Pascual A., Marchetti O. 2009. Antifungal therapeutic drug monitoring: established and emerging indication. Antimicrob. Agents Chemother. 53:24–34 - PMC - PubMed
    1. Borst A., Leverstein-Van Hall M., Verhoef J., Fluit A. 2000. Value of terminal subculture of automated blood culture systems in patients with candidemia. Eur. J. Clin. Microbiol. Infect. Dis. 19:803–805 - PubMed
    1. Clinical and Laboratory Standards Institute 2008. Reference method for broth dilution antifungal susceptibility testing of yeasts, third informational supplement. Approved standard M27-S3. CLSI, Wayne, PA
    1. Clinical and Laboratory Standards Institute 2007. Principles and procedures for blood cultures. Approved guideline M47-A. CLSI, Wayne, PA

MeSH terms