Antimicrobial resistance among uropathogens that cause community-acquired urinary tract infections in women: a nationwide analysis.
Current recommendations for empirical therapy for community-acquired urinary tract infection (UTI) in women hinge on knowledge of antimicrobial susceptibility patterns in the geographic region of the practitioner. We conducted a survey of antimicrobial susceptibilities of 103,223 isolates recovered from urine samples that were obtained in 1998 from female outpatients nationally and within 9 geographic regions in the United States. Resistance of Escherichia coli isolates to trimethoprim-sulfamethoxazole varied significantly according to geographic region, ranging from a high of 22% in the western United States to a low of 10% in the Northeast (P<.001). There were no clinically significant age-related differences in the susceptibility of E. coli to any of the study drugs, but the susceptibility to fluoroquinolones of non-E. coli isolates that were recovered from women who were aged >50 years was significantly lower than that of isolates recovered from younger women (P<.001). The in vitro susceptibility of uropathogens in female outpatients varies according to age and geographic region.
Gupta
K
K
Department of Medicine/Division of Allergy and Infectious Diseases, University of Washington School of Medicine, Seattle, WA 98195, USA. kalg@u.washington.edu
Sahm
D F
DF
Mayfield
D
D
Stamm
W E
WE
D000328:Adult; D000900:Anti-Bacterial Agents / Q000494:pharmacology*; D001419:Bacteria / Q000187:drug effects*; D001424:Bacterial Infections / Q000453:epidemiology / Q000382:microbiology*; D017714:Community-Acquired Infections / Q000453:epidemiology / Q000382:microbiology*; D004352:Drug Resistance, Microbial; D005260:Female; D006801:Humans; D008826:Microbial Sensitivity Tests; D008875:Middle Aged; D011159:Population Surveillance; D014481:United States / Q000453:epidemiology; D014552:Urinary Tract Infections / Q000453:epidemiology / Q000382:microbiology*
D000900:Anti-Bacterial Agents