[Fundamental and clinical studies in pediatric field on ceftizoxime (author's transl)].

Fundamental and clinical studies in the pediatric field on ceftizoxime were carried out, and the following results were obtained. 1. In 4 children age from 3 years to 5 years, the serum concentrations and urinary excretion of ceftizoxime in a dose of 20 mg/kg by intravenous drip infusion over 60 minutes were measured. The peak serum levels were 22.0--84.0 microgram/ml (mean 45.0 microgram/ml) at the end of infusion. The mean serum levels after the end of infusion were 16.9 microgram/ml at 30 minutes, 12.1 microgram/ml at 1 hour, 6.2 microgram/ml at 2 hours, 1.6 microgram/ml at 4 hours and 0.6 microgram/ml at 6 hours, with mean serum half-life (T 1/2) of 1.03 hours, mean urinary recovery rate was 64.9% up to 6 hours. 2. Concentrations of the drug in the cerebrospinal fluid in 1 patient with purulent meningitis at 30 minutes after an intravenous drip infusion of about 33.3 mg/kg were 0.2 to 1.5 microgram/ml, which were 8 to 60 times higher than the MICs of the causative organisms. 3. Ceftizoxime was administered to 38 children with pneumonia, bronchitis, Salmonella enteritis, purulent meningitis, etc. in the daily dose of 44--200 mg/kg for 3--19 days. Clinical response was excellent in 24, good in 12, poor in 1 and unknown in 1. The drug was proved to be very effective in 1 case of purulent meningitis due to H. influenzae. As for side effect, eruption was observed in only 1 case.