[Comparison of clinical efficacy of lomefloxacin (LFLX, NY-198) and pipemidic acid (PPA) in the treatment of infectious enteritis by a double-blind method. The Japan Research Committee of Lomefloxacin Research Group Enteritis].

The clinical efficacy, safety and usefulness of lomefloxacin (LFLX, NY-198), a new quinolone antimicrobial agent, were compared with those of pipemidic acid (PPA) in the treatment of infectious enteritis (bacillary dysentery, enteropathogenic Escherichia coli enteritis and Campylobacter enteritis) by a double blind method. Daily dosage of LFLX and PPA was 600 mg and 2000 mg, respectively administered orally divided into 4 doses. The duration of the treatment was 5 days. Of 290 cases studied, 100 cases were excluded and 21 cases were dropped from analysis of effectiveness and usefulness. The effectiveness and usefulness was evaluated in 169 cases (LFLX group: 83, PPA group: 86). There was no significance difference between the two groups in any background characteristics. The results obtained were as follows: 1. In 73 symptomatic patients (LFLX group: 35, PPA group: 38) on the day of the beginning of administration, the clinical effect was 91.4% in the LFLX group and 84.2% in the PPA group with no significant difference between the two groups. 2. In a total of 184 strains (LFLX group: 90, PPA group: 94), the bacteriological effects of LFLX (93.3%) was superior to that of PPA (80.9%) with significant difference (p = 0.0153). 3. In 169 evaluable patients, the global clinical effects of LFLX (92.8%) was superior to that of PPA (79.1%) with a significant difference (P = 0.0144). 4. Side effects were observed in 1 (0.7%) of the 141 patients in the LFLX group and none of the 143 patients in the PPA group. Abnormal laboratory test values were noted in 10 (7.6%) of the 132 patients treated with FLLX and 7 (5.1%) of the 136 patients treated with PPA, but they as no significant difference between the two groups. 5. In 169 evaluable patients, the clinical usefulness of LFLX (91.6%) was superior to that of PPA (76.7%) with a significant difference (P = 0.0111). From these results, LFLX is considered to be a clinically useful medicine in the treatment of infectious enteritis including bacillary dysentery.