NUTR 395 Lecture Notes - Lecture 5: Nephritis, Hemoglobin, Vasopressin
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Dehydration: what happens to lab values a. i. Smaller number of particles per unit when not dehydrated a. i. 1. Protein status, urinary: urea (uun) reflect recent dietary protein intake, urinary creatinine b. i. By-product of muscle catabolism filtered by kidneys and excreted in urine b. iii. More sensitive indicator of renal disease than bun (not influenced by dietary intake or hydration status) b. iv. Decreased in acute and chronic renal failure, chronic nephritis, muscle disease b. v. creatinine-height index (how much muscle you are supposed to have based on height) b. v. 1. 24 hour urine creatinine (mg) x 100/expected 24 hr urine creatinine (mg) b. v. 2. Complete blood count: hgb & hct discussed earlier, mean corpuscular volume (rbc = corpuscle) b. i. If mean is low, normally indicated iron deficiency b. iv. If mean is high, indicated b12 deficiency: mean corpuscular hemoglobin c. i. Measure of how much hemoglobin is in cell c. ii. In iron and b12 deficiency, value is low: total lymphocyte count d. i.
