Effectiveness of disinfection with alcohol 70% (w/v) of contaminated surfaces not previously cleaned

Author:

Graziano Maurício Uchikawa,Graziano Kazuko Uchikawa1,Pinto Flávia Morais Gomes1,Bruna Camila Quartim de Moraes1,Souza Rafael Queiroz de1,Lascala Cesar Angelo1

Affiliation:

1. Universidade de São Paulo, Brazil

Abstract

OBJECTIVE: To evaluate the disinfectant effectiveness of alcohol 70% (w/v) using friction, without previous cleaning, on work surfaces, as a concurrent disinfecting procedure in Health Services. METHOD: An experimental, randomized and single-blinded laboratory study was undertaken. The samples were enamelled surfaces, intentionally contaminated with Serratia marcescens microorganisms ATCC 14756 106 CFU/mL with 10% of human saliva added, and were submitted to the procedure of disinfection WITHOUT previous cleaning. The results were compared to disinfection preceded by cleaning. RESULTS: There was a reduction of six logarithms of the initial microbial population, equal in the groups WITH and WITHOUT previous cleaning (p=0.440) and a residual microbial load ≤ 102 CFU. CONCLUSION: The research demonstrated the acceptability of the practice evaluated, bringing an important response to the area of health, in particular to Nursing, which most undertakes procedures of concurrent cleaning /disinfecting of these work surfaces.

Publisher

FapUNIFESP (SciELO)

Subject

General Nursing

Reference13 articles.

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2. MMWR,2003

3. HICPAC. Guideline for disinfection and sterilization in healthcare facilities;Rutala WA,2008

4. Desinfection, Sterilization and Preservation;Spaulding EH,1968

5. Introduction to sterilization, disinfection and infection control;Gardener JF,1991

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