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A randomized trial of short-course ciprofloxacin, ofloxacin, or trimethoprim/sulfamethoxazole for the treatment of acute urinary tract infection in women. Ciprofloxacin Urinary Tract Infection Group.

Author(s): McCarty JM, Richard G, Huck W, Tucker RM, Tosiello RL, Shan M, Heyd A, Echols RM

Affiliation(s): Hill Top Research, Fresno, California 93710, USA.

Publication date & source: 1999-03, Am J Med., 106(3):292-9.

Publication type: Clinical Trial; Randomized Controlled Trial

PURPOSE: Bladder infections are very common in otherwise healthy women, and short-course antimicrobial treatment appears effective for many episodes of cystitis. This study reports the results of short-course ciprofloxacin, ofloxacin, and trimethoprim/sulfamethoxazole therapy. PATIENTS AND METHODS: We performed a randomized, double-blind study of the efficacy and safety of a 3-day course of oral ciprofloxacin 100 mg twice daily, ofloxacin 200 mg twice daily, or trimethoprim/sulfamethoxazole 160/800 mg twice daily in women with acute, uncomplicated, symptomatic lower urinary tract infection. RESULTS: A total of 866 patients were enrolled, of whom 688 (79%) were evaluated for the efficacy of treatment (229 treated with ciprofloxacin, 228 treated with trimethoprim/sulfamethoxazole, and 231 treated with ofloxacin). The most frequent reason for exclusion was the failure to identify a pretreatment pathogen. The most commonly isolated pathogen was Escherichia coli (81%). Eradication of the pretreatment pathogen at the end of therapy occurred in 94% of ciprofloxacin, 93% of trimethoprim/sulfamethoxazole, and 97% of ofloxacin-treated patients. At follow-up evaluation at 4 to 6 weeks, recurrence rates (relapse or reinfection) were 11% in the ciprofloxacin, 16% in the trimethoprim/sulfamethoxazole, and 13% in the ofloxacin treatment group. Clinical success at the end of therapy was 93% in the ciprofloxacin, 95% in the trimethoprim/sulfamethoxazole, and 96% in the ofloxacin treatment groups. The frequency of all adverse events was 31% for ciprofloxacin, 41% for trimethoprim/sulfamethoxazole, and 39% for ofloxacin-treated patients (P = 0.03). Premature discontinuation of study drug due to an adverse event was more common in trimethoprim/sulfamethoxazole-treated patients (n = 9) compared with those given ciprofloxacin (n = 2) or ofloxacin (n = 1; P = 0.02). CONCLUSION: Ciprofloxacin, ofloxacin, and trimethoprim/sulfamethoxazole had similar efficacy when given for 3 days to treat acute, symptomatic, uncomplicated lower urinary tract infection in women.

Page last updated: 2006-01-31

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