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  • Title: Cefonicid kinetics in subjects with normal and impaired renal function.
    Author: Blair AD, Maxwell BM, Forland SC, Jacob L, Cutler RE.
    Journal: Clin Pharmacol Ther; 1984 Jun; 35(6):798-803. PubMed ID: 6734031.
    Abstract:
    Cefonicid is a cephalosporin with a longer t1/2 than currently available cephalosporins. Cefonicid kinetics after an intravenous dose of 7.5 mg/kg were followed in four groups of subjects: group 1, four subjects with normal creatinine clearance (Clcr greater than 80 ml/min); group II, seven subjects with mild renal insufficiency (Clcr 50 to 80 ml/min); group III, five subjects with moderate to severe renal impairment (Clcr 8 to 49 ml/min); and group IV, five subjects with end-stage renal disease who were receiving maintenance hemodialysis (Clcr less than 8 ml/ml). Cefonicid volume of distribution ranged from 6.9% to 17.6% body weight but was not related to Clcr. Elimination t1/2 was 4.6 +/- 0.7 hr in group 1,6.0 +/- 2.7 hr in group II, 25.6 +/- 14.0 hr in group III, and 65.3 +/- 43.6 hr in group IV. There was a strong correlation between plasma cefonicid clearance and Clcr. Nonrenal clearance did not change with decreasing Clcr. Hemodialysis clearance calculated from plasma concentrations and recovery in dialysate was 2.5 +/- 0.9 ml/min. These kinetic parameters were used to formulate dosage regimens for patients with renal impairment.
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