Isolation of fluoroquinolone-resistant Escherichia coli and Klebsiella pneumoniae from an infected Hickman catheter.
Escherichia coli and Klebsiella pneumoniae resistant to fluoroquinolones were isolated from an infected Hickman catheter in a 43-year-old diabetic patient who had previously been treated with a 24-day course of ciprofloxacin (200 mg/12 h i.v.). MICs and MBCs of nalidixic acid, norfloxacin, ciprofloxacin, ofloxacin, pefloxacin and fleroxacin were determined for the strains using the methodology recommended by the NCCLS. Both strains were resistant to all the quinolones tested. Since long-term treatment with quinolones might favour the emergence of quinolone resistance or colonization with quinolone-resistant organisms, it is important to monitor for the development of bacterial resistance during therapy with the new fluoroquinolones.
López-Brea
M
M
Servicio de Microbiología, Hospital de la Princesa, Universidad Autónoma, Madrid, Spain.
Alarcón
T
T
D000328:Adult; D000890:Anti-Infective Agents / Q000494:pharmacology*; D002939:Ciprofloxacin / Q000494:pharmacology; D004352:Drug Resistance, Microbial; D004866:Equipment Contamination; D004926:Escherichia coli / Q000187:drug effects* / Q000302:isolation & purification; D006801:Humans; D007711:Klebsiella pneumoniae / Q000187:drug effects* / Q000302:isolation & purification; D008297:Male; D008826:Microbial Sensitivity Tests; D014546:Urinary Catheterization
D000890:Anti-Infective Agents; D002939:Ciprofloxacin