The therapeutic efficacy and safety of
Cefpiramide (CPM, SM-1652) at a 2 g/day dose were objectively compared with those of
Cefsulodin (CFS) at a 2 g/day dose in patients with chronic complicated
urinary tract infections (UTI) by P. aeruginosa in a double-blind study at 46 institutions in Japan. The results are as follows: The therapeutic efficacy was analyzed in 254 patients (136 cases administered CPM and 118 cases administered CFS) after excluding 20 cases as drop-out. Among 254 cases, the number of patients with
infection of P. aeruginosa was 190 cases (100 cases administered CPM and 90 cases administered CFS), while that with
infection of organisms other than P. aeruginosa was 64 cases (36 cases administered CPM and 28 cases administered CFS). By the administration of a 2 g/day dose for 5 days, the overall clinical effective rate of CPM was significantly higher than that of CFS in total patients. When the patients were classified into 2 groups with respect to causative organisms (P. aeruginosa and others), the clinical effective rate of CPM in patients with
infections of P. aeruginosa was significantly higher than that of CFS, while the clinical effective rate of CPM in patients with
infection of other organisms than P. aeruginosa was the same as that of CFS. As to the bacteriological effect on
bacteriuria, the eradication rate of CPM was significantly higher than that of CFS not only against all causative organisms but also against P. aeruginosa. The rate of replacement by S. faecalis was significantly higher in the CFS-treated group than in the CPM-treated group. The same result was obtained on the rate of replacement by other organisms. The MIC values of CPM for isolated organisms before
drug administration were lower than those of CFS. The incidence rates of side effects and the abnormal findings of clinical laboratory tests were the same for the CPM- and CFS-treated groups. From the results, it was concluded that CPM is a useful
drug for the treatment of patients with chronic complicated
urinary tract infections caused by P. aeruginosa.