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Efficiency of cleaning and disinfection of surfaces: correlation between assessment methods

Efficiency of cleaning and disinfection of surfaces: correlation between assessment methods

Revista Brasileira de Enfermagem 70(6): 1176-1183

to assess the correlation among the ATP-bioluminescence assay, visual inspection and microbiological culture in monitoring the efficiency of cleaning and disinfection (C&D) of high-touch clinical surfaces (HTCS) in a walk-in emergency care unit. a prospective and comparative study was carried out from March to June 2015, in which five HTCS were sampled before and after C&D by means of the three methods. The HTCS were considered dirty when dust, waste, humidity and stains were detected in visual inspection; when ≥2.5 colony forming units per cm2 were found in culture; when ≥5 relative light units per cm2 were found at the ATP-bioluminescence assay. 720 analyses were performed, 240 per method. The overall rates of clean surfaces per visual inspection, culture and ATP-bioluminescence assay were 8.3%, 20.8% and 44.2% before C&D, and 92.5%, 50% and 84.2% after C&D, respectively (p<0.001). There were only occasional statistically significant relationships between methods. the methods did not present a good correlation, neither quantitative nor qualitatively.

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Accession: 059668702

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PMID: 29160477

DOI: 10.1590/0034-7167-2016-0608

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