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  • Title: Empiric use of trimethoprim-sulfamethoxazole (TMP-SMX) in the treatment of women with uncomplicated urinary tract infections, in a geographical area with a high prevalence of TMP-SMX-resistant uropathogens.
    Author: Raz R, Chazan B, Kennes Y, Colodner R, Rottensterich E, Dan M, Lavi I, Stamm W, Israeli Urinary Tract Infection Group.
    Journal: Clin Infect Dis; 2002 May 01; 34(9):1165-9. PubMed ID: 11941541.
    Abstract:
    This study evaluated whether trimethoprim-sulfamethoxazole (TMP-SMX) is effective for treatment of uncomplicated urinary tract infections (UTIs) due to TMP-SMX-resistant (TMP-SMX-R) pathogens. Healthy nonpregnant premenopausal women with symptomatic lower UTI were assessed for the presence of pyuria and bacteriuria; if either was present, a urine sample was cultured and TMP-SMX was prescribed. Clinical and microbiologic cure was assessed at days 5-9 and 28-42 after cessation of therapy. For 71%, of patients, cultures grew TMP-SMX-susceptible (TMP-SMX-S) microorganisms, and for 29%, cultures grew TMP-SMX-R organisms. Escherichia coli remained the predominant bacteria in both groups of cultures. At visit 2, microbiological cure had been achieved in 86% of the patients in the TMP-SMX-S group and 42% of those in the TMP-SMX-R group. Similar differences were found at visit 3 by clinical evaluation. Treatment with TMP-SMX of uncomplicated UTI caused by TMP-SMX-R microorganisms results in microbiologic and clinical failure. In high-resistance areas, TMP-SMX should not be the empiric drug of choice for uncomplicated UTI.
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