Protein intake can not be estimated from urinary urea excretion.
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.
Kist-van Holthe tot Echten
J E
JE
Department of Paediatrics, Sophia Children's Hospital/University Hospital Rotterdam, The Netherlands.
Nauta
J
J
Hop
W C
WC
de Jong
M C
MC
van Luijk
W H
WH
Ploos van Amstel
S L
SL
Roodhooft
A M
AM
Noordzij
C M
CM
Wolff
E D
ED
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*
D004044:Dietary Proteins; D014508:Urea