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  • Title: Antimicrobial activity of a novel adhesive containing chlorhexidine gluconate (CHG) against the resident microflora in human volunteers.
    Author: Carty N, Wibaux A, Ward C, Paulson DS, Johnson P.
    Journal: J Antimicrob Chemother; 2014 Aug; 69(8):2224-9. PubMed ID: 24722839.
    Abstract:
    OBJECTIVES: To evaluate the antimicrobial activity of a new, transparent composite film dressing, whose adhesive contains chlorhexidine gluconate (CHG), against the native microflora present on human skin. METHODS: CHG-containing adhesive film dressings and non-antimicrobial control film dressings were applied to the skin on the backs of healthy human volunteers without antiseptic preparation. Dressings were removed 1, 4 or 7 days after application. The bacterial populations underneath were measured by quantitative cultures (cylinder-scrub technique) and compared with one another as a function of time. RESULTS: The mean baseline microflora recovery was 3.24 log10 cfu/cm(2). The mean log reductions from baseline measured from underneath the CHG-containing dressings were 0.87, 0.78 and 1.30 log10 cfu/cm(2) on days 1, 4 and 7, respectively, compared with log reductions of 0.67, -0.87 and -1.29 log10 cfu/cm(2) from underneath the control film dressings. There was no significant difference between the log reductions of the two treatments on day 1, but on days 4 and 7 the log reduction associated with the CHG adhesive was significantly higher than that associated with the control adhesive. CONCLUSIONS: The adhesive containing CHG was associated with a sustained antimicrobial effect that was not present in the control. Incorporating the antimicrobial into the adhesive layer confers upon it bactericidal properties in marked contrast to the non-antimicrobial adhesive, which contributed to bacterial proliferation when the wear time was ≥4 days.
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