Assessment of protein intake in early progressive renal disease.
Mean protein intake in a 4-day dietary survey of 34 patients with early renal disease was 1.2 +/- 0.27 g/kg ideal body weight daily. Nine subjects were taking over twice the recommended minimum intake. An increased protein intake was associated with a greater phosphate and sodium intake and an increased excretion of urea, phosphate, and sodium. Daily intake fluctuated markedly during the study (coefficient of variance 22.5 +/- 10.9%). Protein catabolic rate calculated from urea excretion correlated with protein intake, r = 0.60. Mean difference between the two estimates was 0.04 +/- 0.28 g/kg per day. It is proposed that if urea excretion exceeds 4.5 mmol/kg per day in a single collection (protein catabolic rate 0.98 g/kg per day), serial measurements should be made to determine protein intake more accurately and give dietary advice.
Laxton
J C
JC
Department of Dietetics, Royal Infirmary, Bradford, UK.
Harrison
S P
SP
Shaw
A B
AB
D000328:Adult; D004034:Diet Surveys; D004044:Dietary Proteins / Q000008:administration & dosage*; D005260:Female; D006801:Humans; D007668:Kidney / Q000503:physiopathology; D007676:Kidney Failure, Chronic / Q000178:diet therapy / Q000209:etiology* / Q000503:physiopathology; D008297:Male; D008875:Middle Aged; D009752:Nutritional Status; D010710:Phosphates / Q000008:administration & dosage; D012982:Sodium, Dietary / Q000008:administration & dosage
D004044:Dietary Proteins; D010710:Phosphates; D012982:Sodium, Dietary