RESUMODevido à influência da contaminação de superfícies hospitalares na disseminação de microrganismos patogênicos no ambiente hospitalar, este estudo objetivou identificar a microbiota presente em superfícies hospitalares de um Centro de Material Esterilizado (CME) antes e depois da higienização, e avaliar a suscetibilidade das bactérias encontradas diante de antibióticos usados em tratamentos para infecções. As amostras foram coletadas em diferentes superfícies de um CME antes e após a higienização. Os microrganismos foram identificados e após o isolamento, foi realizado o teste de sensibilidade aos antimicrobianos pelo método de disco-difusão conforme padronização do Clinical Laboratory Standards Institute (CLSI). Analisou-se 10 diferentes superfícies em dois momentos, encontrando-se 10 cepas antes da higienização e 8 após (n=18). Acinetobacter baumannii foi o microrganismo mais frequente, representando 50% das cepas encontradas; seguido de Yersinia pseudotuberculosis, 11,1%, e Staphylococcus coagulase negativa, (SCN) 11,1%. O teste de susceptibilidade a antimicrobianos foi realizado com as 18 cepas e todas apresentaram resistência a, no mínimo, um antibiótico. Diante dos resultados, concluiu-se que A. baumannii foi o patógeno encontrado com mais frequência, antes e depois da higienização. E os microrganismos que mais mostraram resistência foram as cepas de A. baumannii, Proteus penneri e SCN, apresentando resistência a quatro antibióticos. Palavras-chave: Bactérias. Esterilização. Infecção hospitalar. Resistência microbiana. MICROBIOLOGICAL ANALYSIS OF A HOSPITAL STERILIZED MATERIAL CENTER: IDENTIFICATION AND RESISTANCE TO ANTIBIOTICS ABSTRACTDue to the influence of contamination of hospital surfaces on the dissemination of pathogenic microorganisms in the hospital environment, this study aimed to identify the microbiota present on hospital surfaces of a Sterilized Material Center (CME) before and after the hygiene, and to evaluate the susceptibility of the bacteria found in front to antibiotics used in treatments for infections. Samples were collected on different surfaces of a CME before and after sanitization. The microorganisms were identified and after isolation, an antimicrobial susceptibility test was performed by the disc diffusion method according to standardization of the Clinical Laboratory Standards Institute (CLSI). A total of 10 strains analyzed at each moment, were found 10 strains before hygiene and 8 strains after (n = 18). Acinetobacter baumannii was the most frequent microorganism, accounting for 50% of the strains found; Followed by Yersinia pseudotuberculosis 11.1% and coagulase negative Staphylococcus (SCN) 11.1%. The antimicrobial susceptibility test was performed with all 18 strains and all showed resistance to at least one antibiotic. Considering the results, it was concluded that A. baumannii was the most frequent pathogen, before and after hygiene. The most resistant microorganisms were strains of A. baumannii, Proteus penneri and SCN, presenting resistance to four antibiotics.
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