title: Protein intake can not be estimated from urinary urea excretion.
abstract: We assessed the relationship between protein intake (calculated from a 3-day prospective dietary diary) and 24-h urinary urea excretion in 37 children with chronic renal failure. Protein intake was not restricted during the investigation period. The 24-h urinary urea excretion correlated poorly with the protein intake estimated from the dietary diary (r = 0.58). We conclude that although it is common practice to assess compliance with a protein-restricted diet in children with chronic renal failure with a dietary diary and 24-h urinary urea excretion, the value of this assessment is questionable.
authors.affiliation: Department of Paediatrics, Sophia Children's Hospital/University Hospital Rotterdam, The Netherlands.
authors.forename: J E
authors.initials: JE
authors.lastname: Kist-van Holthe tot Echten
authors.forename: J
authors.initials: J
authors.lastname: Nauta
authors.forename: W C
authors.initials: WC
authors.lastname: Hop
authors.forename: M C
authors.initials: MC
authors.lastname: de Jong
authors.forename: W H
authors.initials: WH
authors.lastname: van Luijk
authors.forename: S L
authors.initials: SL
authors.lastname: Ploos van Amstel
authors.forename: A M
authors.initials: AM
authors.lastname: Roodhooft
authors.forename: C M
authors.initials: CM
authors.lastname: Noordzij
authors.forename: E D
authors.initials: ED
authors.lastname: Wolff
mesh_terms: D000293:Adolescent; D002648:Child; D002675:Child, Preschool; D004044:Dietary Proteins / Q000008:administration & dosage*; D004435:Eating; D005260:Female; D006801:Humans; D007676:Kidney Failure, Chronic / Q000652:urine*; D008297:Male; D008499:Medical Records; D010349:Patient Compliance; D014508:Urea / Q000652:urine*
chemical_list: D004044:Dietary Proteins; D014508:Urea