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Numerous outbreaks of Rapid Growth of Mycobacteria (RGM) have been associated with decontamination, disinfection and sterilization malpractices, in Brazil. Between 2000-2008 were reported more than 2,000 confirmed cases due to RGM infections, and the video procedures were considered to carry these microorganisms. The increased use of medical devices in surgical procedures may be involved in the RGM spreading by its ability to grow and survive in biofilm systems. The aim of this study was evaluate the susceptibility of Mycobacterium abscessus subsp. bolletii (outbreak and nonoutbreak strains) to chemical disinfectants: Glutaraldehyde 2%, Peracetic Acid 0.2%, Hydrogen Peroxide 35%, Chlorhexidine Digluconate 0.5%, Chlorhexidine 0.2%, Iodine 1%, Quaternary Ammonium Compounds 1.2%, and Phenol 5%. Plasma Sterilization Technologies (Reactive Ion Etching and Inductively Coupled Plasma) were also evaluated. Polymers employed in medical devices (Polyvinyl chloride, HighDensity Polyethylene, Polycarbonate, Polypropylene, and Polyurethane) were analyzed by Photoacoustic Infrared Spectroscopy (PAS-FTIR), Scanning Electron Microscopy (SEM), System Energy Dispersive Spectroscopy (EDS) and Profilometry. The results have demonstrated the resistance of Mycobacterium abscessus subsp. bolletii isolated from the Belém (PA) outbreak considering chemical exposition to Glutaraldehyde 2%, Chlorhexidine Digluconate 0.5%, Chlorhexidine 0.2%, Quaternary Ammonium Compounds 1.2%, and Iodine 2%. However, these strains were highly sensitive to Peracetic Acid 0.2%, Hydrogen Peroxide 35%, and Phenol 5%. The M. abscessus subsp. bolletii strains have been presented resistant to all disinfectants studied, in biofilm systems. Studies involving polymer integrity demonstrated changes in surface (oxidation and roughness) on all processed materials, and the ICP system was more aggressive in contrast to Reactive Ion Etching.

Micobactérias de crescimento rápido de importância médica no Brasil: eficácia antimicrobiana de desinfetantes e sistema de esterilização por plasma