Laboratory Data in nutrition assessment

Hypovolemia hypervolemia other factors influencing

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Unformatted text preview: Elevated sodium; high urine specific gravity sodium; Treatment of Dehydration • • • Use hypotonic IV solutions such as D5W Offer oral fluids Offer Rehydrate gradually Laboratory Values and Hydration: BUN Lab Test Hypovolemia Hypervolemia Other factors influencing Other result result BUN Increases Decreases Low: inadequate dietary Low: protein, severe liver Normal: Normal: failure failure 10-20 mg/dl High: prerenal failure; mg/dl High: excessive protein intake, GI bleeding, catabolic state; glucocorticoid therapy therapy Creatinine will also rise Creatinine in severe hypovolemia in Adapted from Charney and Malone. ADA Pocket Guide to Nutrition Assessment, 2004. Laboratory Values and Hydration Status: BUN:Creatinine Ratio Lab Test Hypovolemia Hypervolemia BUN: Increases Decreases BUN: creatinine ratio ratio Normal: Normal: 10-15:1 10-15:1 Other factors Other influencing result influencing Low: inadequate dietary Low: protein, severe liver failure failure High: prerenal failure; High: excessive protein intake, GI bleeding, catabolic state; glucocorticoid therapy therapy Adapted from Charney and Malone. ADA Pocket Guide to Nutrition Assessment, 2004. Laboratory Values and Hydration: HCT Lab Test Hypovolemia Hypervolemia Other factors influencing Other result result Hematocrit Normal: Normal: Male: 42-52% 42-52% Female: Female: 37-47% 37-47% Increases Decreases Low: anemia, hemorrhage Low: with subsequent hemodilution (occurring after approximately 12-24 hours) hours) High: chronic hypoxia High: (chronic pulmonary disease, living at high altitude, heavy smoking, recent transfusion) Adapted from Charney and Malone. ADA Pocket Guide to Nutrition Assessment, 2004. Laboratory Values and Hydration: Alb, Na+ Lab Test Hypovolemia Hypervolemia Other factors influencing Other result result Serum Serum albumin albumin ↑ ↓ Low: malnutrition; acute Low: phase response, liver failure failure High: rare except in High: hemoconcentration hemoconcentration S...
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