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  • Title: Kinetics of netilmicin and gentamicin.
    Author: Jahre JA, Fu KP, Neu HC.
    Journal: Clin Pharmacol Ther; 1978 May; 23(5):591-7. PubMed ID: 639434.
    Abstract:
    The kinetic parameters of netilmicin were studied in normal human subjects. In the intravenous study a steady-state was obtained in 4 subjects by the constant infusion of 2 mg/kg of netilmicin during the first hour followed by 0.5 mg/kg/hr for each of three successive hours. Creatinine clearance was greater than the simultaneous serum and renal clearance of netilmicin. In the intramuscular study 6 subjects received a single injection of 1 mg/kg of netilmicin followed by the same dose of gentamicin 1 wk later. A mean peak serum levels of 3.9 microgram/ml was found for both antibiotics, but the mean serum half-life of netilmicin was shorter than that of gentamicin. Doubling the intramuscular dose of netilmicin approximately doubled the peak serum level. In both studies 75% to 90% of the netilmicin was recovered in the urine within the first 24 hr. Netilmicin appears to be primarily excreted by glomerular filtration. The apparent volume of distribution was similar to that reported for other related aminoglycosides. Netilmicin and gentamicin have similar kinetic parameters. There were wide individual differences among normal subjects with both drugs.
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