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  • Title: Cefsulodin kinetics in healthy subjects after intramuscular and intravenous injection.
    Author: Granneman GR, Sennello LT, Sonders RC, Wynne B, Thomas EW.
    Journal: Clin Pharmacol Ther; 1982 Jan; 31(1):95-103. PubMed ID: 7053312.
    Abstract:
    We evaluated cefsulodin kinetics in normal subjects after 250-, 500-, and 1,000-mg, intramuscular injections and 500-, 1,000-, and 2,000-mg 30-min intravenous infusions. Twelve plasma and four urine samples were collected in the first 12 and 24 hr. Plasma samples were analyzed by a new, highly precise high-performance liquid chromatographic procedure developed in our laboratory and urine samples were analyzed microbiologically, using Pseudomonas aeruginosa as the test organism. Mean calculated peak plasma levels from the 250-, 500-, and 1,000-mg intramuscular doses were 5.46, 11.81, and 19.40 microgram/ml. After 500-, 1,000-, and 2,000-mg intravenous infusions peak levels were 32.7, 65.7, and 190.1 microgram/ml. Data from the intramuscular doses were fitted to a one-compartment open kinetic model, yielding a mean elimination half-life (t1/2) of 1.9 hr. Data from the intravenous infusions were fitted to a two-compartment open model, with a mean beta-phase t1/2 of 1.6 hr. Mean 0- to 24-hr urinary recoveries after the three intramuscular doses were 50.0%, 54.5%, and 51.2% of total dose; after the three intravenous doses they were 60.4%, 52.4%, and 54.0%. Cefsulodin kinetics were shown to be consistent and orderly.
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