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Ana C. Victoria, Robert Schwarcz; Microbiology of Dacryocystitis in the Bronx. Invest. Ophthalmol. Vis. Sci. 2011;52(14):1059.
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© ARVO (1962-2015); The Authors (2016-present)
To determine the current microbiological profile of dacryocystitis in the Bronx, NY in the past ten years.
123 consecutive charts were retrospectively reviewed with the diagnosis of dacryocystitis from the years 2000-2010. The focus was on microbiological profile and antibiotic senstitivites and resistance.
Of 123 charts obtained, a total of 30 patients were found to have cultures taken at the time of the diagnosis. Six patient's samples (20%) grew multiple organisms and a total of 38 isolates were obtained. Gram positive (GP) bacteria were isolated in 66% of samples. The most common GP species cultured was Staphylococcus aureus, representing 44.75% of isolates. Methicillin-resistant Staphylococcus aureus grew in 15.79% of all isolates. Sensitivity was found for: Sulfamethoxazole, Vancomycin, Clindamycin, and Gentamycin. Gram negative (GN) bacteria were isolated in 32% of samples. The most common GN species cultured was Pseudomonas aeroginosa, representing 13.16% of isolates. Sensitivity was found to the following antibiotics: Ciprofloxacin, Gentamycin, Piperacillin/Tazobactam, Ticarcillin/clavulanate.
In conclusion, Staphylococcus aureus is the organism most commonly associated with dacryocystitis in the Bronx. The most commonly isolated gram negative bacteria was Pseudomonas aeroginosa. This microbiological profile along with clinical history and cultures should be taken into account when selecting antibiotic coverage for treatment of patients with dacryocystitis.
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