Open, prospective study of the clinical efficacy of ciprofloxacin.

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RESUMO

One hundred patients with infections mostly outside of the urinary tract were studied in a prospective, open manner to ascertain the effectiveness and safety of ciprofloxacin in a variety of clinical situations. There were 41 instances of bacteremia, including 38 with Salmonella typhi, and 21 respiratory, 17 skin and skin structure, 11 bone or joint, 6 gastrointestinal, and 4 urinary tract infections. The patients were given 500 mg of ciprofloxacin orally every 12 h for 2 to 107 days (mean, 15.1 days). Microorganisms isolated disclosed susceptibilities comparable to those reported previously, with a MIC for 90% of the strains of 0.25 microgram/ml. For Streptococcus pneumoniae the MIC for 90% of the strains was 0.03 microgram/ml, and it was higher for Pseudomonas aeruginosa (0.5 microgram/ml), although still in the therapeutic range. Levels in blood were lower than those reported in other series, and no accumulation of the drug during treatment was detected. In 88 instances there was resolution of the infectious process, in 7 there was improvement, in 3 there was a failure to respond, and in 2 the clinical response was indeterminate. Bacteriological eradication was documented in 87 infections. Despite extensive clinical and laboratory examinations before, during, and after therapy, no major abnormalities related to therapy were seen; only one patient required discontinuation of ciprofloxacin due to gastrointestinal intolerance. Ciprofloxacin is an effective and safe therapeutic alternative in many tissue infections caused by susceptible microorganisms.

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