[Pharmacokinetics and clinical effects of cefixime in pediatrics].

Pharmacokinetics and clinical effects of cefixime (CFIX), a new oral cephalosporin antibiotic, in pediatric field were investigated. The result obtained were summarized as follows. CFIX (5% granules) was given to each of 5 children twice in a single dose of 1.5 or 3.0 mg/kg in a cross-over trial. The mean peak serum concentration of CFIX was 0.64 micrograms/ml at 4 hours after given the dose of 1.5 mg/kg and 1.15 micrograms/ml at 4 hours after the dose of 3.0 mg/kg. The mean half-life and the mean AUC values were 2.72 hours and 4.10 micrograms X hr/ml, respectively after the dose of 1.5 mg/kg, and 2.77 hours and 8.26 micrograms X hr/ml after the dose of 3.0 mg/kg. The urinary recovery was investigated in 5 children after the dose of CFIX of 1.5 mg/kg and in 4 children after the dose of 3.0 mg/kg. The mean peak urinary concentrations of CFIX and the mean 12-hour urinary recovery rates were 10.6-67.9 micrograms/ml at 2-10 hours and 15.7% after the dose of 1.5 mg/kg, and were and were 6.16-230 micrograms/ml at 2-8 hours and 18.9% after the dose of 3.0 mg/kg, respectively. CFIX was given to 6 children twice in a single dose of 50 mg either in the form of 5% granules or in capsules in a cross-over trial. The mean peak serum concentrations, half-life and AUC values were 1.26 micrograms/ml at 4 hours, 3.09 hours and 9.63 micrograms X hr/ml, respectively after the dose of 50 mg CFIX in 5% granules, and were 1.16 micrograms/ml at 4 hours, 2.87 hours, and 7.82 micrograms X hr/ml, respectively after the dose of 50 mg in capsules. The urinary recovery was investigated in 5 children. The mean peak urinary concentrations and the mean 12-hour urinary recovery rates were 19.1-114 micrograms/ml at 4-10 hours and 15.7%, respectively after the dose of 50 mg in 5% granules, and were 8.16-89.0 micrograms/ml at 4-10 hours and 11.3%, respectively after the dose of 50 mg in capsules. Clinical efficacy of CFIX was investigated in a total of 26 children including 2 with tonsillitis, 2 with acute bronchitis, 2 with scarlet fever and 20 with urinary tract infection. Each of children were given orally a dose of 2.6 mg/kg CFIX 2-3 times a day for 11 days in average.(ABSTRACT TRUNCATED AT 400 WORDS)