title: Pharmacokinetics of ceftizoxime in patients undergoing continuous ambulatory peritoneal dialysis.
abstract: The pharmacokinetics of ceftizoxime were studied in 12 patients on continuous ambulatory peritoneal dialysis. After a 3-g intravenous dose, the steady-state volume of distribution was 0.23 +/- 0.05 liter kg-1, with an elimination half-life of 9.7 +/- 5.1 h. The peritoneal clearance of ceftizoxime (2.8 +/- 0.7 ml min-1) contributed modestly to the overall serum clearance of the drug (17.1 +/- 7.4 ml min-1) and was greater than the renal clearance (0.8 +/- 0.8 ml min-1). The peritoneal concentration rose to 91 +/- 29 micrograms ml-1 at 6 h, which was 0.61 +/- 0.17 of the serum concentration. A 3-g intravenous dose of ceftizoxime given every 48 h would result in adequate activity against most susceptible organisms, but more frequent dosing may be necessary for less susceptible organisms.
mesh_terms: D001419:Bacteria / Q000187:drug effects; D002439:Cefotaxime / Q000031:analogs & derivatives* / Q000378:metabolism / Q000494:pharmacology; D015296:Ceftizoxime; D005260:Female; D006801:Humans; D007676:Kidney Failure, Chronic / Q000378:metabolism*; D007700:Kinetics; D008297:Male; D008657:Metabolic Clearance Rate; D010530:Peritoneal Dialysis; D010531:Peritoneal Dialysis, Continuous Ambulatory
chemical_list: D015296:Ceftizoxime; D002439:Cefotaxime