Aquisição nasal de Staphylococcus aureus por recém-nascidos saudáveis
A significant percentile of the adult population bears Staphylococcus aureus in the nasal vestibules, skin and mucous membranes, but in newborns that percentage is outstanding, once it reaches 100% in the four-day-old newborns. In the present study both, the acquisition of nasal Staphylococcus aureu...
| Autor: | |
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| Formato: | tesis de maestría |
| Estado: | Versión publicada |
| Fecha de publicación: | 2007 |
| País: | Brasil |
| Recursos: | Universidade Estadual de Maringá (UEM) |
| Repositorio: | Repositório Institucional da Universidade Estadual de Maringá (RI-UEM) |
| Idioma: | portugués |
| OAI Identifier: | oai:localhost:1/2305 |
| Acesso em linha: | http://repositorio.uem.br:8080/jspui/handle/1/2305 |
| Access Level: | acceso abierto |
| Palavra-chave: | Staphylococcus aureus Recém-nascidos Resistência Brasil. Newborn Resistance Brazil. Ciências da Saúde Enfermagem |
| Resumo: | A significant percentile of the adult population bears Staphylococcus aureus in the nasal vestibules, skin and mucous membranes, but in newborns that percentage is outstanding, once it reaches 100% in the four-day-old newborns. In the present study both, the acquisition of nasal Staphylococcus aureus among 50 healthy newborns and the occurrence of the microorganism in their respective mothers' mammal areola/nipples was investigated. Three samples from the nasal vestibules and one from the areola/nipples were collected. The biological material was sown into salty mannitol agar and later it was maintained into trypticasein soy broth for 24 hours for proceeding a new sowing. Staphylococcus aureus samples were assayed to observe the susceptibility to oxacillin, by using a technique known as 'determination of minimum inhibitory concentration'. Thus the resistant oxacillin were analyzed in relation to both, susceptibility to other antimicrobial - by using the disk diffusion method - and the presence of mecA gene. Results showed that, among parturients, 56% (28/50) showed positive culture for Staphylococcus aureus, whereas among the newborns, 90% (45/50) provided the isolation of the microorganism. In relation to the binomial mother-son, 50% (25/50) of the pairs carried the microorganism. Approximately 59% (43/73) of the samples were isolated from direct sowing, having an increment of 51% when the swab was maintained in enrichment medium. The resistance to oxacillin, through the test of minimum inhibitory concentration, was detected in 7 out of the 73 samples, and,when using the disk diffusion method, the result was confirmed in 6 of them. The sensibility to linezolide, vancomycin, mupyrocin and telithromycin was of 100%, whereas the resistance to cefoxitin was of 100%. In relation to the detection of mecA gene, results showed that 85.7% (6) of the resistant samples to oxacillin carried that gene. |
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