title: Emerging ciprofloxacin-resistant Pseudomonas aeruginosa.
abstract: OBJECTIVE
  To report a clinical series of ciprofloxacin-resistant ocular isolates of Pseudomonas aeruginosa from a tertiary care ophthalmic center.
  
  
  METHODS
  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.
  
  
  RESULTS
  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).
  
  
  CONCLUSIONS
  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.
authors.affiliation: Department of Ophthalmology, Bascom Palmer Eye Institute, University of Miami School of Medicine, Florida 33136, USA.
authors.forename: N A
authors.initials: NA
authors.lastname: Chaudhry
authors.forename: H W
authors.initials: HW
authors.lastname: Flynn
authors.forename: T G
authors.initials: TG
authors.lastname: Murray
authors.forename: H
authors.initials: H
authors.lastname: Tabandeh
authors.forename: M O
authors.initials: MO
authors.lastname: Mello
authors.forename: D
authors.initials: D
authors.lastname: Miller
mesh_terms: D000890:Anti-Infective Agents / Q000627:therapeutic use*; D002939:Ciprofloxacin / Q000627:therapeutic use*; D004352:Drug Resistance, Microbial; D005123:Eye / Q000382:microbiology; D006801:Humans; D008826:Microbial Sensitivity Tests; D011550:Pseudomonas aeruginosa / Q000187:drug effects* / Q000302:isolation & purification
chemical_list: D000890:Anti-Infective Agents; D002939:Ciprofloxacin