Calculations>Nutrition Support Practice Test

A 54-year-old man with small bowel obstruction is NPO and started on TPN. Weight 70 kg. Labs: Na 138 mEq/L, K 3.9 mEq/L, Mg 2.0 mg/dL, phosphate 3.2 mg/dL, BUN 14 mg/dL, SCr 0.9 mg/dL. The team requests the following daily goals: energy 25 kcal/kg/day; protein 1.2 g/kg/day; sodium 1.5 mEq/kg/day; potassium 1 mEq/kg/day; magnesium 12 mEq/day; phosphate 30 mmol/day. No fluid restriction. Calculate the daily macronutrient and electrolyte requirements to order in the TPN based on these goals.

Mr. R is a 42-year-old male (70 kg, BMI 23) admitted with small-bowel obstruction and NPO. Labs: Na 134 mEq/L, K 3.6 mEq/L, Mg 1.9 mg/dL, Phos 3.2 mg/dL, BUN 14 mg/dL, SCr 0.9 mg/dL. The team requests TPN. Nutrition goals: 25 kcal/kg/day and protein 1.5 g/kg/day. Electrolyte goals: Na 2 mEq/kg/day, K 1 mEq/kg/day, Mg 0.2 mEq/kg/day, and phosphate 0.5 mmol/kg/day. Use actual body weight and round each daily requirement to the nearest whole number.