[Microbial flora isolated from patient's conjunctiva previous to XXXX surgery].

@entity3256 @entity2890 @entity231 @entity794 @entity4279 @entity281 @entity2887 @entity3225 @entity1536
BACKGROUND: Endophtalmitis post @entity231 surgery is one of most feared and devastating complications resulting in serious consequences and an uncertain visual prognosis. Antimicrobial prophylaxis against endophtalmitis must be based on the best knowledge of conjuntival microbiota. OBJECTIVE: To establish microbiological basis for the best antibiotic prophylaxis to prevent @entity3225 in @entity231 surgery. MATERIALS AND METHODS: A descriptive, cross-sectional, prospective study. A preoperative conjunctival sample was taken from the lower fornix of 118 pacients, sowing it immediately in culture media. Identification of growing colonies and susceptibility testing were performed by manual or automated methods. RESULTS: 106 (89.8%) of 118 preoperative cultures were positive. 159 bacteria were isolated in single or mixed flora, with 95% of Gram positive organisms. Staphylococci represented 76.1% of isolated bacteria, with 82.6% of coagulase-negative staphylococci (SCN) and 17.4% of @entity794 . Forty two percent of SCN and 38% of @entity794 were @entity3256 resistan; both groups showed high susceptibility to @entity2890 and fourth-generation @entity2887 . CONCLUSIONS: we recommend the use of topical @entity2890 as pre-operative antimicrobial prophylaxis associated with @entity4279 antisepsis. A fourth-generation @entity1536 is recommended when there is risk of @entity281 .
