Coagulase-negative staphylococci in Southern Brazil: looking toward its high diversity

Oliveira, Caio Fernando de; Cavanagh, Jorunn Pauline; Fredheim, Elizabeth G. Aarag; Reiter, Keli Cristine; Rieger, Alexandre; Klingenberg, Claus; d’Azevedo, Pedro Alves; Sollid, Johanna U. Ericson

doi:10.1590/0037-8682-0015-2016

Cited by 9 publications

(6 citation statements)

References 34 publications

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“…In this context, CNS's are of fundamental importance, since in the last decade they have emerged as microorganisms strongly associated with septicemia in ICUs and are highlighted as the main agents of HAI in neonatology. The highest prevalence of CNS found in our study has the same ratios of other ICUs: skin microbiota composed predominantly of CNS and use of invasive medical devices subject to contamination by these microorganisms 21,22 . Regarding antimicrobial susceptibility tests, the highest percentages of resistance were presented by CNS in the Adult and Neonatal ICUs.…”

Section: What Are the Risk Factors And Agents Responsible For Bacterisupporting

confidence: 61%

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What are the risk factors and agents responsible for bacterial infections in ICUs?

Silva¹,

Brixner²,

Oliveira³

et al. 2018

Mundo da Saúde

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This study aimed to analyze the main risk factors and prevalence of microorganisms from patients admitted in adult and neonatal ICUs. This was a retrospective study using data of microbial cultures and their respective patients admitted in adult and neonatal ICUs of a university hospital from the central region of Rio Grande do Sul, Brazil. In the adult ICU, 58.8% of patients presented heart problems, and 60 positive cultures were found with the prevalence of coagulase negative Staphylococcus (CNS) (30.0%) and Staphylococcus aureus (13.3%). In the neonatal ICU, patients predominantly presented pulmonary diseases (52.6%), and 31 positive cultures were found with the prevalence of CNS (35.5%) and Enterococcus spp. (16.1%). Thus, we conclude that both units surveyed had patients with different risk factors but with infections caused by Gram positive cocci, mainly CNS.Palavras-chave: Hospital Infections. Risk factors. Bacterial infections. Intensive care units.

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Section: What Are the Risk Factors And Agents Responsible For Bacterisupporting

confidence: 61%

“…de dispositivos médicos invasivos sujeitos a contaminação por estes microrganismos 21,22 . Quanto aos testes de susceptibilidade aos antimicrobianos, os maiores percentuais de resistência foram apresentados por SCN nas UTIs Adulto e Neonatal.…”

Section: Quais Os Fatores De Risco E Agentes Responsáveis Por Infecçõunclassified

What are the risk factors and agents responsible for bacterial infections in ICUs?

Silva¹,

Brixner²,

Oliveira³

et al. 2018

Mundo da Saúde

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“…24,25 The most prevalent species isolated from blood cultures are S. epidermidis, S. haemolyticus, and S. hominis. 25,26 In general, 31.0% of S. aureus strains were resistant to oxacillin (MRSA) and the vast majority of MRSA strains were also resistant to clindamycin, ciprofloxacin, and levofloxacin. Almost 80% of CoNS strains were resistant to oxacillin.…”

Section: Discussionmentioning

confidence: 99%

Antimicrobial Susceptibility and Enterotoxin-Encoding Genes inStaphylococcusspp. Recovered from Kitchen Equipment from a University Hospital in Rio de Janeiro, Brazil

Miyahira

Santos

Leão

et al. 2018

Microbial Drug Resistance

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This study was conducted to determine the occurrence of antimicrobial resistance and enterotoxin-encoding genes (EEGs) in Staphylococcus spp. recovered from equipment used to prepare hospital meals, in a university hospital in Rio de Janeiro, Brazil. Sixty samples were collected from semi-industrial equipment (one blender and one mixer) in the hospital's kitchen. Resistance genes and SCCmec types were detected by PCR. From the 40 isolates of Staphylococcus spp. identified, 8 were Staphylococcus aureus. Thirty-two (80%) Staphylococcus spp. isolates were resistant to at least one antimicrobial agent. Resistance genetic determinants were detected: erm gene (Staphylococcus epidermidis [n = 2]; Staphylococcus hominis [n = 1]), mecA gene (S. epidermidis [n = 2]), and aa(6')-aph(2'') gene (Staphylococcus caprae [n = 1], S. epidermidis [n = 2], S. hominis [n = 1], Staphylococcus pausteri [n = 1], Staphylococcus simulans [n = 1], and Staphylococcus warneri [n = 1]). The presence of at least one EEG in 83% (n = 33) of the isolates was identified. Two strains of S. epidermidis were methicillin-resistant S. epidermidis (MRSE) and harboring SCCmec type IV. Staphylococcus spp. contaminated some hospital kitchen's equipment, indicating that hygiene procedures should be improved. Results also indicate that meals can be a vehicle to disseminate multiresistant Staphylococcus spp., including MRSE, and Staphylococcus with EEGs.

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“…According to the results from the susceptibility test antimicrobial, 87.5% of the samples identified as CoNS showed resistance to oxacilin, corroborating with previous studies that have estimated that the CoNS isolated in hospitals in Brazil, 70% to 90%, usually have shown resistance to oxacillin. [17][18][19] During the last decades, the substantial increase in CoNS isolated in hospital settings, as well as their oxacillin resistance rates has increased significantly its clinical importance, becoming recognized as opportunistic agents often associated with nosocomial infections. 17,19 As a result, it reinforces the importance of performing increasingly accurate cultures, especially as regards the antibiogram that will contribute to conduct towards the use of more rational way, in a more targeted therapy, particularly in hospital environment.…”

Section: Staphylococcus Epidermidismentioning

confidence: 99%

Staphylococcus spp. resistentes em hemoculturas e superfícies hospitalares e a segurança do paciente

Almeida

Silva

Rocha³

et al. 2017

Rev Epidemiol Control Infect

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Justification and Objectives:This study aimed to evaluate the presence and resistance of Staphylococcus aureus and coagulase-negative Staphylococci resistant to oxacillin isolated in surfaces and blood cultures in an Intensive Care Unit of an emergency hospital in the city of Caruaru, Pernambuco, Brazil. Methods: This is a descriptive, cross-sectional study, the collections being performed from the bed surfaces of an Intensive Care Unit (ICU). In parallel, blood samples from the respective patients were also obtained. Samples were collected by convenience sampling and the identification of the isolated microorganisms was done by mass spectrometry. Results: We observed a higher prevalence of bacteria from the group of coagulasenegative Staphylococci -CoNS (76.92%) in relation to the species Staphylococcus aureus (23.07%). Among the microorganisms identified as resistant to oxacillin, 12.5% of the species were similar in the bed surface samples and blood cultures from the same patient sample. Conclusions: Resistant bacteria identified reinforce the importance of emphasizing the general measures of environmental hygiene in relation to patient safety in health care.

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Coagulase-negative staphylococci in Southern Brazil: looking toward its high diversity

Cited by 9 publications

References 34 publications

What are the risk factors and agents responsible for bacterial infections in ICUs?

What are the risk factors and agents responsible for bacterial infections in ICUs?

Antimicrobial Susceptibility and Enterotoxin-Encoding Genes inStaphylococcusspp. Recovered from Kitchen Equipment from a University Hospital in Rio de Janeiro, Brazil

Staphylococcus spp. resistentes em hemoculturas e superfícies hospitalares e a segurança do paciente

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