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Risk factors for oxacillin/methicillin resistance in coagulase-negative staphylococci.
Martínez, J A; Mensa, J; Marco, F; Almela, M; Lopez, J; Casals, C; Soriano, E; Jiménez de Anta, M T.
Afiliación
  • Martínez JA; Laboratory of Microbiology, Hospital Clínic, Barcelona, Spain.
J Hosp Infect ; 35(4): 295-9, 1997 Apr.
Article en En | MEDLINE | ID: mdl-9152822
The clinical variables associated with isolation of oxacillin- and methicillin-resistant, coagulase-negative staphylococci (CNS) from blood cultures of hospitalized patients were studied. One hundred CNS strains (49 oxacillin-susceptible; 51 oxacillin-resistant) isolated consecutively from one of two or more sets of blood cultures were collected. Only two variables were independently associated with recovery of oxacillin/methicillin-resistant strains by a multivariate analysis: length of hospital stay > 10 days (OR 5.2, 95% CI = 1.7-15.7), and administration of antimicrobial agents in the previous 14 days (OR 4.5, 95% CI = 1.7-11.7). Analysis of the antibiotics administered indicated that only beta-lactams were associated with a statistically significant risk of resistance to oxacillin/methicillin (OR of beta-lactams vs no antibiotics = 6.94, 95% CI = 1.9-25.3; OR of non-beta-lactams vs no antibiotics = 2.64, 95% CI = 0.8-8.3). Length of hospital stay (especially > 10 days) and prior administration of antimicrobial agents (mainly beta-lactams) independently predicted the presence of oxacillin/methicillin-resistant CNS in blood cultures.
Asunto(s)
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Banco de datos: MEDLINE Asunto principal: Oxacilina / Penicilinas / Infecciones Estafilocócicas / Infección Hospitalaria / Meticilina Tipo de estudio: Etiology_studies / Prognostic_studies / Risk_factors_studies Límite: Female / Humans / Male / Middle aged Idioma: En Revista: J Hosp Infect Año: 1997 Tipo del documento: Article País de afiliación: España
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Banco de datos: MEDLINE Asunto principal: Oxacilina / Penicilinas / Infecciones Estafilocócicas / Infección Hospitalaria / Meticilina Tipo de estudio: Etiology_studies / Prognostic_studies / Risk_factors_studies Límite: Female / Humans / Male / Middle aged Idioma: En Revista: J Hosp Infect Año: 1997 Tipo del documento: Article País de afiliación: España