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Related Experiment Videos

Bacterial proliferation in platelet concentrates.

J M Heal, S Singal, E Sardisco

    Transfusion
    |July 1, 1986
    PubMed
    Summary
    This summary is machine-generated.

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    Extending platelet shelf-life to 7 days may increase risks from bacterial contamination. Low-level bacterial contamination in platelets can grow to dangerous levels over the extended storage period.

    Area of Science:

    • Microbiology
    • Hematology
    • Transfusion Medicine

    Background:

    • The US Food and Drug Administration (FDA) has reported an increase in deaths linked to contaminated platelets since 1980.
    • Platelet shelf-life was extended from 3 to 7 days, raising concerns about potential impacts on bacterial contamination safety.

    Purpose of the Study:

    • To investigate bacterial growth dynamics in platelet concentrates under extended storage conditions.
    • To determine if the 7-day shelf-life poses a greater risk for clinically significant bacterial contamination compared to the previous 3-day limit.

    Main Methods:

    • Bacterial growth curves were monitored in platelet concentrates inoculated with varying concentrations of organisms.
    • Platelets were stored for up to 7 days, and bacterial proliferation was assessed over time.

    Related Experiment Videos

  • Visual inspection for abnormalities in platelet concentrates was also performed.

    • Main Results:

    • Platelets inoculated with 10^3 or more organisms exhibited logarithmic growth throughout 7 days of storage.
    • With lower inoculums (10^2 or less), 20% showed uninhibited growth, 50% remained sterile, and 30% had delayed growth.
    • Bacterial contamination, not significant at 3 days, could become clinically significant by day 7.

    Conclusions:

    • The extended 7-day shelf-life for platelets may allow initially insignificant bacterial contamination to reach dangerous levels.
    • This finding supports the hypothesis that extending platelet storage duration increases the risk associated with bacterial contamination.
    • Further strategies are needed to mitigate the risks of bacterial contamination in extended-shelf-life platelet products.