[Absorption, excretion and clinical trials of cefroxadine in the field of pediatrics (author's transl)].

A study was made with the newly developed cefroxadine (CXD) dry syrup by measuring the serum level, urine excretion and recovery rate in 10 children who were orally administered 5, 10 and 20 mg/kg at 1 hour after meals and the following results were gained. Also, its clinical efficacies and side effects were investigated in the following cases who were treated with a mean dose of 33 mg/day divided into 3 to 4 portions for a period of 9 days on the average; viz. a total of 151 cases consisting of 9 cases of pharyngitis, 39 of tonsillitis, 11 of streptococcal infection, i.e. scarlet fever, 7 of bronchitis, 6 of pneumonia, 1 of otitis media, 6 of purulent lymphadenitis, 1 of purulent parotitis, 1 of subcutaneous abscess and 3 of impetigo. 1. The serum level tends to reach its maximum level within 1 hour after administration. The mean concentrations of 5, 10 and 20 mg/kg dose in the foregoing time were 6.35, 9.12 and 21.62 mcg/ml respectively and dose response was observed. CXD showed higher concentration than CEX, CED and CFT. The mean half-life periods of the 3 dose were 72, 84 and 66 minutes respectively and variations were observed, but the drugs maintains a satisfactory serum level. 2. The time which showed highest urine excretion was mainly in the 0 to 2 hours bracket and the average concentrations of 5 , 10 and 20 mg/kg dose in the foregoing time were 381.2, 771.7 and 1,577.7 mcg/ml respectively. The dose response was more evident than in the serum concentrations. The average recovery rates within 6 hours were 93.6, 88.3 and 94.3% respectively and they were similar to those of CEX, CED and CFT. 3. The clinical effects were evaluated were in 148 cases out of the total of 151 and 136 cases, or 91.9% showed good or excellent efficacy response. 4. The daily dose groups of less than 30 mg/kg and 31 to 40 mg/kg formed the majority and there was no difference in the comparison of the clinical effectiveness in these 2 groups. Administration of a daily dose of 20 to 40 mg/kg is sufficient for the treatment of the aforementioned mild diseases except for pneumonia. 5. The clinical effects were compared between the 3 and 4 times a day treatment groups, but there was no difference between these two groups with regard to the foregoing daily dose. The 3 times a day treatment is acceptable, but the 4 times a day treatment is preferable when pharmacokinetics if taken into account. 6. The bacteriological effects in 41 cases, or 97.6% out of the 42 cases were above the efficacy base line and a high efficacy rate was achieved. 7. With regard to side effects, diarrhea developed in 4 cases and eosinophilia in 6 cases, abnormal simultaneous increases in GOT and GPT in 1 case and 1 case each for abnormal values in LDH and BUN were seen in the clinical test values. The foregoing results show that CXD has high efficacy and safety and it can be said that it is a drug required in the pediatric field.