Resumo

POLETTO, Ana Paula et al. Effect of peracetic acid on microbial adhesion and on properties of endotracheal tubes. RFO UPF [online]. 2016, vol.21, n.2, pp. 196-200. ISSN 1413-4012.

Objective: This study aimed to assess the influence of repeated immersions in peracetic acid on bacterial colonization, chemical composition, roughness, and recovery ability after endotracheal tubes deformation. Materials and method: Four tubes were subjected to successive immersions in peracetic acid, forming four groups: a control group (sterilized by the manufacturer) and others subjected to one, two, or three immersions, in order to simulate reprocessing of tubes. Infrared spectroscopy, surface roughness, tube light deformation after compression, and Staphylococcus aureus colonization were assessed. Results: The number of immersions (reprocessing) had no influence on Staphylococcus aureus colonization of tubes (p=0.235), neither on chemical composition nor on roughness (p=0.621). Additionally, there was no difference in recovery ability after deformation (p=0.633). Conclusion: Reprocessing up to three times does not impair material properties and does not increase bacterial colonization of tube surfaces.

Palavras-chave : Peracetic acid.; Disinfection.; Ventilator-associated Pneumonia..