Treatment of complicated urinary tract infections. Comparative study of sisomicin and gentamicin.

The efficacy and safety of the two aminoglycoside antibiotics, sisomicin and gentamicin, were investigated in a prospective randomized study of 100 elderly male patients with complicated urinary tract infections. Both drugs were administered intramuscularly, sisomicin twice daily and gentamicin three times daily according to body weight. All bacteria isolated from the urine were sensitive to both antibiotics by disk sensitivity method. Seventy per cent of the patients treated with sisomicn and 63 per cent of those treated with gentamicin were cured of infection. There was no apparent toxicity noted from either drug. The twice daily sisomicin administration appeared to be as effective and safe as the three times daily administration of gentamicin in the treatment of complicated urinary tract infections.