Effectiveness of hand-cleansing agents for removing methicillin-resistant Staphylococcus aureus for contaminated hands

OBJECTIVE: The effectiveness of hand-cleansing agents in removing a hospital strain of methicillin-resistant Staphylococcus aureus from artificially contaminated hands of five volunteers was studied. DESIGN: The products used were plain liquid soap, ethyl alcohol 70% (by weight), 10% povidone-iodine...

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Published in:Infection control and hospital epidemiology 2001-02, Vol.22 (2), p.105
Main Authors: Guihermetti, Marcio, Silvio Evandro Daniel Hernandes, Fukushigue, Yoshiaki, Lourdes Botelho Garcia, Cardoso, Celso Luiz
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Language:English
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Alcohols
Iodine
Variance analysis
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container_start_page 105
container_title Infection control and hospital epidemiology
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creator Guihermetti, Marcio
Silvio Evandro Daniel Hernandes
Fukushigue, Yoshiaki
Lourdes Botelho Garcia
Cardoso, Celso Luiz
description OBJECTIVE: The effectiveness of hand-cleansing agents in removing a hospital strain of methicillin-resistant Staphylococcus aureus from artificially contaminated hands of five volunteers was studied. DESIGN: The products used were plain liquid soap, ethyl alcohol 70% (by weight), 10% povidone-iodine liquid soap (PVP-I), and chlorhexidine gluconate (4%) detergent. The experiments were performed using a Latin square statistical design, with two 5x4 randomized blocks. The removal rates of S aureus cells from contaminated fingertips were estimated by analysis of variance, the response variable being the log10 reduction factor (RF), ie, log10 of the initial counts minus log10 of the final counts. In the first and second blocks, the fingertips of the volunteers were contaminated in mean with 3.76 log10 colony-forming units ([CFU] light-contamination hand) and 6.82 log10 CFU (heavy-contamination hand), respectively. RESULTS: In the first block, there were significant differences between treatments (P
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DESIGN: The products used were plain liquid soap, ethyl alcohol 70% (by weight), 10% povidone-iodine liquid soap (PVP-I), and chlorhexidine gluconate (4%) detergent. The experiments were performed using a Latin square statistical design, with two 5x4 randomized blocks. The removal rates of S aureus cells from contaminated fingertips were estimated by analysis of variance, the response variable being the log10 reduction factor (RF), ie, log10 of the initial counts minus log10 of the final counts. In the first and second blocks, the fingertips of the volunteers were contaminated in mean with 3.76 log10 colony-forming units ([CFU] light-contamination hand) and 6.82 log10 CFU (heavy-contamination hand), respectively. RESULTS: In the first block, there were significant differences between treatments (P&lt;.05). The 10% PVP-I (RF, 3.76) and 70% ethyl alcohol (RF, 3.51) had significantly higher removal rates than plain liquid soap (RF, 1.96) and 4% chlorhexidine (RF, 1.91). In the second block, 10% PVP-I (RF, 4.39) and 70% ethyl alcohol (RF, 3.27) also were significantly more effective than plain liquid soap (RF, 1.77) and 4% chlorhexidine (RF, 1.37; P&lt;.05). Plain liquid soap was significantly more effective than chlorhexidine (4%) detergent. CONCLUSIONS: The results suggest that 10% PVP-I and 70% ethyl alcohol may be the most effective hand-cleansing agents for removing methicillin-resistant S aureus strain from either lightly or heavily contaminated hands.</description><identifier>ISSN: 0899-823X</identifier><identifier>EISSN: 1559-6834</identifier><language>eng</language><publisher>Cambridge: Cambridge University Press</publisher><subject>Alcohols ; Iodine ; Variance analysis</subject><ispartof>Infection control and hospital epidemiology, 2001-02, Vol.22 (2), p.105</ispartof><rights>Copyright Slack, Incorporated Feb 2001</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784</link.rule.ids></links><search><creatorcontrib>Guihermetti, Marcio</creatorcontrib><creatorcontrib>Silvio Evandro Daniel Hernandes</creatorcontrib><creatorcontrib>Fukushigue, Yoshiaki</creatorcontrib><creatorcontrib>Lourdes Botelho Garcia</creatorcontrib><creatorcontrib>Cardoso, Celso Luiz</creatorcontrib><title>Effectiveness of hand-cleansing agents for removing methicillin-resistant Staphylococcus aureus for contaminated hands</title><title>Infection control and hospital epidemiology</title><description>OBJECTIVE: The effectiveness of hand-cleansing agents in removing a hospital strain of methicillin-resistant Staphylococcus aureus from artificially contaminated hands of five volunteers was studied. DESIGN: The products used were plain liquid soap, ethyl alcohol 70% (by weight), 10% povidone-iodine liquid soap (PVP-I), and chlorhexidine gluconate (4%) detergent. The experiments were performed using a Latin square statistical design, with two 5x4 randomized blocks. The removal rates of S aureus cells from contaminated fingertips were estimated by analysis of variance, the response variable being the log10 reduction factor (RF), ie, log10 of the initial counts minus log10 of the final counts. In the first and second blocks, the fingertips of the volunteers were contaminated in mean with 3.76 log10 colony-forming units ([CFU] light-contamination hand) and 6.82 log10 CFU (heavy-contamination hand), respectively. RESULTS: In the first block, there were significant differences between treatments (P&lt;.05). The 10% PVP-I (RF, 3.76) and 70% ethyl alcohol (RF, 3.51) had significantly higher removal rates than plain liquid soap (RF, 1.96) and 4% chlorhexidine (RF, 1.91). In the second block, 10% PVP-I (RF, 4.39) and 70% ethyl alcohol (RF, 3.27) also were significantly more effective than plain liquid soap (RF, 1.77) and 4% chlorhexidine (RF, 1.37; P&lt;.05). Plain liquid soap was significantly more effective than chlorhexidine (4%) detergent. 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DESIGN: The products used were plain liquid soap, ethyl alcohol 70% (by weight), 10% povidone-iodine liquid soap (PVP-I), and chlorhexidine gluconate (4%) detergent. The experiments were performed using a Latin square statistical design, with two 5x4 randomized blocks. The removal rates of S aureus cells from contaminated fingertips were estimated by analysis of variance, the response variable being the log10 reduction factor (RF), ie, log10 of the initial counts minus log10 of the final counts. In the first and second blocks, the fingertips of the volunteers were contaminated in mean with 3.76 log10 colony-forming units ([CFU] light-contamination hand) and 6.82 log10 CFU (heavy-contamination hand), respectively. RESULTS: In the first block, there were significant differences between treatments (P&lt;.05). The 10% PVP-I (RF, 3.76) and 70% ethyl alcohol (RF, 3.51) had significantly higher removal rates than plain liquid soap (RF, 1.96) and 4% chlorhexidine (RF, 1.91). 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subjects Alcohols
Iodine
Variance analysis
title Effectiveness of hand-cleansing agents for removing methicillin-resistant Staphylococcus aureus for contaminated hands
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