title: Mezlocillin pharmacokinetics in patients with normal and impaired renal functions.
abstract: The pharmacokinetics of intravenous bolus doses of 1.0 g of mezlocillin were studied in 13 persons with normal and reduced renal functions. In renal failure a moderate increase was observed for the terminal serum half-life(t1/2 beta). This changed from a mean of 1.1 h at a glomerular filtration rate of 100 ml/min to 1.6 h at 10 ml/min. The difference was not statistically significant. The excretion of unchanged drug in urine during 24 h was reduced from a mean of 59.4% (range, 52 to 77) in subjects with glomerular filtration rate above 50 ml/min to 10% (range, 7.9 to 12.1) in two patients with glomerular filtration rate of 10 to 20 ml/min. The volume of distribution during the beta-phase, Vd,b, was 14% of the body weight. Much of the antibiotic was metabolized, and this proportion increased upon reduction in renal function.
mesh_terms: D000368:Aged; D005260:Female; D005919:Glomerular Filtration Rate; D006207:Half-Life; D006801:Humans; D007674:Kidney Diseases / Q000378:metabolism*; D007700:Kinetics; D008297:Male; D008875:Middle Aged; D010406:Penicillins / Q000097:blood / Q000378:metabolism* / Q000652:urine
chemical_list: D010406:Penicillins