Emerging ciprofloxacin-resistant Pseudomonas aeruginosa.

Chaudhry, N A; Flynn, H W; Murray, T G; Tabandeh, H; Mello, M O; Miller, D · Am J Ophthalmol · 1999

case_series · Level IV

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Abstract

To report a clinical series of ciprofloxacin-resistant ocular isolates of Pseudomonas aeruginosa from a tertiary care ophthalmic center. Review of in vitro sensitivities of all ocular isolates of P. aeruginosa be tween July 1991 and September 1998. In vitro resistance was defined as a minimum inhibitory concentration of 4 or more microg per ml. Nine of 423 ocular isolates of P. aeruginosa showed in vitro resistance to ciprofloxacin. From 1991 to 1994, 0.44% (1/227) of ocular isolates were resistant to ciprofloxacin, whereas from 1995 to 1998, 4.1% (8/ 196) of ocular isolates showed in vitro resistance (P = .014). Ciprofloxacin-resistant P. aeruginosa has been identified in recent clinical ocular specimens. Ciprofloxacin resistance among ocular isolates of P. aeruginosa is a local and worldwide concern.

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