Ciprofloxacin or Imipenem Use Correlates with Resistance in Pseudomonas aeruginosa
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Date
1998-1-1
Authors
Zhanel, George G
Nicolle, Lindsay E
Gin, Alfred S
Karlowsky, James
Kabani, Amin
Hoban, Daryl J
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Abstract
OBJECTIVE: To investigate the relationship between ciprofloxacin or imipenem use and antimicrobial resistance in Pseudomonas aeruginosa.METHODS: A retrospective review of monthly antimicrobial susceptibility reports for ciprofloxacin (1988 to 1995) and imipenem (1987 to 1995) against P aeruginosa and hospital antimicrobial use records at a tertiary care teaching hospital in Winnipeg, Manitoba. Data were entered into a relational database, R:Base 4.5++, collated, transferred to a spreadsheet and subjected to linear regression analysis. The relationship between ciprofloxacin or imipenem use and resistance was assessed using a Pearson correlation.RESULTS: Ciprofloxacin-resistant P aeruginosa increased from 1.0% of all isolates in 1988 to 10.0% in 1995. A significant (P=0.05) correlation was demonstrated between the amount of ciprofloxacin use and prevalence of ciprofloxacin-resistant P aeruginosa (r=0.73, P=0.05). Imipenem-resistant P aeruginosa increased from 1.0% of isolates in 1987 to a maximum of 10.4% in 1991, and subsequently decreased to 5.4% in 1995. Imipenem use and the prevalence of imipenem-resistant P aeruginosa were significantly correlated (r=0.85, P=0.014).CONCLUSIONS: Ciprofloxacin use was directly associated with ciprofloxacin resistance, and imipenem use was directly associated with imipenem resistance in P aeruginosa.
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George G Zhanel, Lindsay E Nicolle, Alfred S Gin, James Karlowsky, Amin Kabani, and Daryl J Hoban, “Ciprofloxacin or Imipenem Use Correlates with Resistance in Pseudomonas aeruginosa,” Canadian Journal of Infectious Diseases, vol. 9, no. 6, pp. 382-386, 1998. doi:10.1155/1998/210742