title: Relationship between cefpirome clearance, serum creatinine, weight and age in patients treated for infection.
abstract: Cefpirome serum concentrations were measured by microbiological assay in 30 patients after five to nine days of treatment with 1 or 2 g bd for moderate to severe infection of presumed bacterial origin. Patients with serum creatinine (SCr) greater than 220 mumol/L were excluded. The age of patients ranged from 34-86 years. Creatinine clearance (Clcr) was calculated from age, sex, weight and SCr. The range of SCr was 63-220 mumol/L and the range of Clcr was 18-169 mL/min. The correlation coefficient with cefpirome clearance was 0.464 for SCr and 0.747 for Clcr. More than half of the patients with Clcr less than 50 mL/min had SCr within the normal range of 70-150 mumol/L. Mean cefpirome clearance in patients with Clcr 18-50 mL/min was 42.7 mL/min, which is very similar to the figure of 43.5 mL/min reported in a single dose volunteer study in patients with renal failure. Mean cefpirome clearance in patients with Clcr greater than 80 mL/min was 107.6 mL/min. In conclusion, these data on cefpirome clearance obtained after multiple dose treatment of patients with presumed bacterial infection are consistent with data previously obtained from single dose volunteer studies and support the currently recommended dose regimens. Clinicians should take account of age, weight and sex when estimating renal function from SCr.
authors.affiliation: Department of Microbial Diseases, City Hospital, Nottingham, UK.
authors.forename: M H
authors.initials: MH
authors.lastname: Wilcox
authors.forename: A
authors.initials: A
authors.lastname: Pithie
authors.forename: G
authors.initials: G
authors.lastname: Smith
authors.forename: T A
authors.initials: TA
authors.lastname: Moreland
authors.forename: P G
authors.initials: PG
authors.lastname: Davey
authors.forename: R G
authors.initials: RG
authors.lastname: Finch
mesh_terms: D000328:Adult; D000367:Age Factors; D000368:Aged; D001424:Bacterial Infections / Q000378:metabolism; D001835:Body Weight; D002511:Cephalosporins / Q000008:administration & dosage / Q000493:pharmacokinetics*; D003404:Creatinine / Q000097:blood*; D005260:Female; D006801:Humans; D007275:Injections, Intravenous; D008297:Male; D008657:Metabolic Clearance Rate; D008875:Middle Aged; D000097572:Cefpirome
chemical_list: D002511:Cephalosporins; D003404:Creatinine; D000097572:Cefpirome