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Related Experiment Videos

A test procedure for evaluating surgical hand disinfection.

J R Babb1, J G Davies, G A Ayliffe

  • 1Hospital Infection Research Laboratory, Dudley Road Hospital, Birmingham, UK.

The Journal of Hospital Infection
|June 1, 1991
PubMed
Summary

This study introduces a method to test surgical hand scrubs and alcohol rubs. 70% isopropanol (IPA) demonstrated the highest efficacy in reducing skin flora, outperforming other tested agents.

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Area of Science:

  • Microbiology
  • Infection Control
  • Dermatology

Background:

  • Surgical site infections remain a significant concern.
  • Effective hand hygiene is crucial for preventing pathogen transmission in healthcare settings.
  • Standardized methods for evaluating antiseptic efficacy are needed.

Purpose of the Study:

  • To describe and validate a technique for assessing the immediate and prolonged efficacy of surgical hand hygiene preparations.
  • To compare the effectiveness of various surgical scrubs and alcoholic hand rubs against resident skin flora.

Main Methods:

  • Volunteers' baseline skin flora counts were established.
  • Logarithmic reductions in flora were measured immediately after application and after wearing gloves for 3 hours.

Related Experiment Videos

  • Standardized application techniques were used for surgical scrubs and hand rubs, with variations in application time for 70% isopropanol (IPA).

    • Main Results:

    • 70% IPA applied for 2 minutes was the most effective, yielding log10 reductions of 1.65 (immediate) and 1.58 (prolonged).
    • Chlorhexidine scrubs showed variable efficacy and acceptability.
    • 'Hibiscrub' was the most effective aqueous formulation, with reductions of 1.01 (immediate) and 1.16 (prolonged).

    Conclusions:

    • The described method provides a reliable means for evaluating surgical hand disinfection efficacy.
    • 70% IPA is a highly effective agent for surgical hand antisepsis.
    • Manufacturers and reference centers can utilize this technique to assess new and existing hand hygiene products.