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. 2024 Jul 1;79(7):1637-1644.
doi: 10.1093/jac/dkae159.

Evaluation of environmental antibiotic contamination by surface wipe sampling in a large care centre

Paul Sessink  1 , Birgit Tans  2 , David Devolder  2 , Rik Schrijvers  3   4 , Isabel Spriet  2   5
Affiliations

Evaluation of environmental antibiotic contamination by surface wipe sampling in a large care centre

Paul Sessink et al. J Antimicrob Chemother. .

Abstract

Objectives: Exposure of healthcare workers to antibiotics may cause adverse health effects. Results of environmental contamination with antibiotics, obtained by taking surface wipe samples, can be used as an indicator for potential exposure to these sensitizing drugs. The objective was to describe the results of repeated measurements of contamination with antibiotics on multiple surfaces in hospital wards. Standardized needle and syringe preparation techniques and cleaning procedures were used.

Methods: The preparation table and the floor around the waste bin in six wards were sampled and analysed for contamination with the antibiotics amoxicillin, benzylpenicillin, cefotaxime, ceftriaxone, flucloxacillin, meropenem, piperacillin and vancomycin. Sampling was performed in four trials during 8 months. Depending on the outcome of the trials, the cleaning procedure was adapted. Liquid chromatography with tandem mass spectrometry was used for the analysis of the drugs.

Results: During the four trials, contamination with all eight antibiotics was omnipresent on all preparation tables and floors in the six wards. The highest contamination was found for amoxicillin (1291 ng/cm2). Changing the cleaning procedure did not reduce the level of contamination.

Conclusions: Surface contamination with the antibiotics was widespread and most probably caused by spillage during the preparation in combination with an ineffective cleaning procedure. Strategies should be developed and implemented by institutions for safe handling of antibiotics to reduce environmental contamination and potential exposure of healthcare workers to these sensitizing drugs.

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Figures

Figure 1.
Figure 1.
Overview of the study set-up presenting the trials 1–4 at three timepoints, including adjustments in cleaning procedures. aStandard cleaning was carried out with 1% Incidin® Plus (tables) and PolGreen Odor Line Indoors (floors). bCleaning with Dreft Original. cCleaning with Dreft Original followed by 70% alcohol.
See this image and copyright information in PMC

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