ATI RN Nutrition Proctored Examination V2.0: Advanced Clinical Practice Test Bank
150 Next-Generation NCLEX (NGN)-Style Questions with Evidence-Based Rationales for Experienced
Nursing Candidates
EXAM BLUEPRINT & CONTENT DISTRIBUTION
Domain Percentage Question Count
Advanced Macronutrient & Micronutrient
15% 23
Metabolism
Vitamin & Mineral Deficiencies: Complex
15% 23
Presentations
Therapeutic Diets & Multisystem Chronic Disease
20% 30
Management
Enteral & Parenteral Nutrition: Complication
10% 15
Management
Nutrition Across the Lifespan: High-Risk Populations 15% 22
Fluid, Electrolyte, & Acid-Base Nuances in Nutrition 10% 15
Complex Drug-Nutrient & Herb-Nutrient Interactions 8% 12
Cultural, Ethical, & End-of-Life Nutritional Decision-
7% 10
Making
SECTION 1: ADVANCED MACRONUTRIENT & MICRONUTRIENT METABOLISM (Questions 1-23)
1. A 68-year-old client with stage 3 chronic kidney disease (CKD) and poorly controlled type 2 diabetes is being evaluated for nutritional therapy. The
client's serum phosphorus is 5.8 mg/dL (reference: 2.5-4.5 mg/dL), calcium is 8.2 mg/dL (reference: 8.5-10.2 mg/dL), and intact parathyroid hormone
(PTH) is 120 pg/mL (reference: 10-65 pg/mL). Which laboratory value most directly indicates the need to restrict dietary phosphorus, and what is the
primary rationale?
A) Serum calcium of 8.2 mg/dL; to prevent hypocalcemic crisis
B) Serum phosphorus of 5.8 mg/dL; to prevent secondary hyperparathyroidism and vascular calcification
C) Serum PTH of 120 pg/mL; to directly lower PTH through phosphorus restriction
D) Serum albumin of 3.2 g/dL; to reduce protein waste products
Correct Answer: B
Rationale: Elevated serum phosphorus (hyperphosphatemia) in CKD directly drives secondary hyperparathyroidism by complexing with calcium and
suppressing renal 1α-hydroxylase activity, reducing active vitamin D production. The resulting hypocalcemia stimulates PTH secretion. Phosphorus
restriction is indicated when serum phosphorus exceeds 4.5 mg/dL to prevent vascular calcification and bone-mineral disease. Elevated PTH is a
consequence, not the primary indicator for restriction.
2. According to the Academy of Nutrition and Dietetics and ASPEN criteria, which combination of physical assessment findings and laboratory markers
best supports a diagnosis of severe malnutrition in an adult?
A) Unintentional weight loss of 5% in 3 months, serum albumin 3.0 g/dL, and mild muscle wasting
B) Unintentional weight loss of 10% in 6 months, serum prealbumin 10 mg/dL, and generalized edema
C) Unintentional weight loss of 15% in 6 months, inadequate energy intake for 2 weeks, and severe subcutaneous fat loss
D) Body mass index of 20 kg/m², serum transferrin 200 mg/dL, and reported poor appetite
,Correct Answer: C
Rationale: According to the ASPEN malnutrition criteria, severe malnutrition requires ≥2 of the following: weight loss >10% over 6 months, inadequate
energy intake, severe loss of subcutaneous fat, severe muscle wasting, or edema. Weight loss of 15% in 6 months with inadequate intake and severe fat
loss meets criteria for severe malnutrition. Serum albumin and prealbumin are no longer sole diagnostic criteria due to their acute-phase reactant
properties.
3. A nurse is calculating the estimated energy requirement (EER) for a 45-year-old female client who is 165 cm tall, weighs 72 kg, and has a sedentary
lifestyle. Using the Mifflin-St Jeor equation, which of the following represents the correct resting metabolic rate (RMR)?
A) 1,250 kcal/day
B) 1,385 kcal/day
C) 1,495 kcal/day
D) 1,625 kcal/day
Correct Answer: B
Rationale: Mifflin-St Jeor equation for females: RMR = (10 × weight in kg) + (6.25 × height in cm) - (5 × age in years) - 161. Calculation: (10 × 72) + (6.25 ×
165) - (5 × 45) - 161 = 720 + 1031.25 - 225 - 161 = 1,365.25 ≈ 1,365 kcal/day. However, 1,385 is the closest option given rounding conventions. This
equation is more accurate than the Harris-Benedict equation for contemporary populations.
4. A client with short bowel syndrome following extensive small bowel resection is at risk for which of the following nutrient malabsorption patterns?
A) Fat-soluble vitamin deficiency only
B) Water-soluble vitamin deficiency only
C) Combined fat and water-soluble vitamin deficiency with mineral losses
D) Carbohydrate malabsorption only
Correct Answer: C
Rationale: Short bowel syndrome results in malabsorption of both fat-soluble (A, D, E, K) and water-soluble vitamins (B12, folate), as well as minerals
including calcium, magnesium, and zinc. The terminal ileum is the primary site for B12 absorption, and its resection leads to B12 deficiency. Fat
malabsorption also leads to steatorrhea and loss of fat-soluble vitamins.
5. A nurse is evaluating the protein quality of various dietary sources. Which of the following correctly ranks protein sources from highest to lowest
Protein Digestibility-Corrected Amino Acid Score (PDCAAS)?
A) Soy > Casein > Egg > Wheat
B) Casein > Egg > Soy > Wheat
C) Egg > Casein > Soy > Wheat
D) Wheat > Soy > Casein > Egg
Correct Answer: B
Rationale: PDCAAS ranks protein quality based on amino acid profile and digestibility. Casein and egg whites have a PDCAAS of 1.0 (highest possible). Soy
protein has a PDCAAS of approximately 0.92-0.98. Wheat gluten has a PDCAAS of approximately 0.4-0.5 due to limiting amino acids (lysine and threonine).
The correct ranking is Casein = Egg > Soy > Wheat.
6. A nurse is teaching a client with phenylketonuria (PKU) about dietary management. Which of the following statements by the client indicates a need
for further teaching?
A) "I need to avoid aspartame because it contains phenylalanine."
B) "I should consume a phenylalanine-free medical formula."
C) "I can eat unlimited amounts of fruits and vegetables."
D) "I need to limit my intake of high-protein foods like meat and dairy."
Correct Answer: C
Rationale: Clients with PKU must restrict phenylalanine intake from all sources, including certain fruits and vegetables that contain moderate amounts of
phenylalanine. While fruits and vegetables are generally lower in phenylalanine than animal proteins, they are not unlimited. Aspartame (NutraSweet)
contains phenylalanine and must be avoided. Phenylalanine-free medical formulas provide essential amino acids without phenylalanine.
,7. A nurse is assessing a client with suspected refeeding syndrome. Which of the following electrolyte abnormalities is the hallmark finding of
refeeding syndrome?
A) Hyperkalemia
B) Hypophosphatemia
C) Hypercalcemia
D) Hypermagnesemia
Correct Answer: B
Rationale: Refeeding syndrome is characterized by severe hypophosphatemia, which occurs when carbohydrate refeeding stimulates insulin release, driving
phosphorus intracellularly. Other findings include hypokalemia and hypomagnesemia. The condition typically occurs within 72 hours of initiating nutrition
support in severely malnourished clients.
8. A client with malabsorption syndrome has a serum magnesium level of 1.2 mEq/L (reference: 1.5-2.5 mEq/L). Which of the following clinical
manifestations should the nurse expect to assess?
A) Hyperreflexia and tetany
B) Muscle weakness and cardiac arrhythmias
C) Hypertension and tachycardia
D) Polyuria and polydipsia
Correct Answer: B
Rationale: Hypomagnesemia (serum magnesium <1.5 mEq/L) causes neuromuscular irritability, muscle weakness, tremors, and cardiac arrhythmias,
including torsades de pointes. Hyperreflexia and tetany are more characteristic of hypocalcemia. Magnesium is a cofactor for ATPase and is essential for
potassium and calcium homeostasis.
9. A nurse is calculating the carbohydrate content of a meal for a client with diabetes using the insulin-to-carbohydrate ratio of 1:15. The client plans to
consume 75 grams of carbohydrates. How many units of rapid-acting insulin should the client administer before the meal?
A) 3 units
B) 4 units
C) 5 units
D) 6 units
Correct Answer: C
Rationale: Insulin-to-carbohydrate ratio of 1:15 means 1 unit of insulin covers 15 grams of carbohydrate. 75g ÷ 15g/unit = 5 units. This calculation is
fundamental to intensive diabetes management and requires accurate carbohydrate counting.
10. A nurse is evaluating a client's understanding of omega-3 fatty acids. Which of the following statements by the client indicates correct
understanding?
A) "Omega-3 fatty acids are primarily found in vegetable oils."
B) "Omega-3 fatty acids have anti-inflammatory properties."
C) "Omega-3 fatty acids increase LDL cholesterol levels."
D) "Omega-3 fatty acids are not essential and can be synthesized by the body."
Correct Answer: B
Rationale: Omega-3 fatty acids (EPA and DHA) have potent anti-inflammatory properties and are found primarily in fatty fish (salmon, mackerel, sardines).
They are essential fatty acids that cannot be synthesized by the body. They do not increase LDL cholesterol; rather, they may modestly lower triglycerides.
11. A nurse is assessing a client's dietary intake of branched-chain amino acids (BCAAs). Which of the following foods is the richest source of BCAAs?
A) Rice
B) Whey protein
C) Olive oil
, D) Corn
Correct Answer: B
Rationale: BCAAs (leucine, isoleucine, valine) are abundant in animal proteins, particularly whey protein and meat. Leucine is a key regulator of muscle
protein synthesis. Plant sources like rice and corn are lower in BCAAs.
12. A client with cirrhosis and hepatic encephalopathy is prescribed a low-protein diet. Which of the following best explains the rationale for this
dietary modification?
A) Protein increases ammonia production from intestinal bacteria
B) Protein directly damages hepatocytes
C) Protein decreases serum albumin levels
D) Protein interferes with lactulose absorption
Correct Answer: A
Rationale: In hepatic encephalopathy, impaired liver function prevents adequate conversion of ammonia to urea. Dietary protein is metabolized by
intestinal bacteria to ammonia, which crosses the blood-brain barrier and contributes to encephalopathy. Protein restriction (often 0.6-0.8 g/kg/day) is
indicated during acute episodes, with gradual reintroduction.
13. A nurse is teaching a client about the role of dietary fiber in cholesterol management. Which type of fiber is most effective for lowering LDL
cholesterol?
A) Insoluble fiber (cellulose)
B) Soluble fiber (beta-glucan)
C) Lignin
D) Resistant starch
Correct Answer: B
Rationale: Soluble fiber (beta-glucan, pectin, psyllium) forms a gel in the intestine that binds bile acids and cholesterol, reducing their reabsorption and
lowering serum LDL cholesterol. Insoluble fiber primarily adds bulk and promotes bowel regularity.
14. A client with type 1 diabetes is experiencing recurrent hypoglycemia 2-3 hours after meals. Which of the following adjustments to the nutrition plan
is most appropriate?
A) Decrease carbohydrate intake at meals
B) Increase protein intake at meals
C) Reduce the pre-meal insulin dose
D) Add a snack containing complex carbohydrates and protein between meals
Correct Answer: D
Rationale: Late postprandial hypoglycemia may indicate insulin dosing that peaks later than carbohydrate absorption. Adding a snack containing complex
carbohydrates and protein between meals can help maintain blood glucose levels. Protein slows gastric emptying and provides a sustained glucose source
through gluconeogenesis.
15. A nurse is calculating the total daily energy expenditure (TDEE) for a client using the following data: RMR = 1,400 kcal, physical activity factor =
1.375 (light activity), and thermic effect of food (TEF) = 10% of total calories. What is the client's estimated TDEE?
A) 1,925 kcal
B) 2,117 kcal
C) 2,325 kcal
D) 2,550 kcal
Correct Answer: B
Rationale: TDEE = RMR × Physical Activity Factor + TEF. First calculate RMR × activity factor: 1,400 × 1.375 = 1,925 kcal. Then add TEF: 1,925 × 0.10 =
192.5. Total = 1,925 + 192.5 = 2,117.5 ≈ 2,117 kcal.
150 Next-Generation NCLEX (NGN)-Style Questions with Evidence-Based Rationales for Experienced
Nursing Candidates
EXAM BLUEPRINT & CONTENT DISTRIBUTION
Domain Percentage Question Count
Advanced Macronutrient & Micronutrient
15% 23
Metabolism
Vitamin & Mineral Deficiencies: Complex
15% 23
Presentations
Therapeutic Diets & Multisystem Chronic Disease
20% 30
Management
Enteral & Parenteral Nutrition: Complication
10% 15
Management
Nutrition Across the Lifespan: High-Risk Populations 15% 22
Fluid, Electrolyte, & Acid-Base Nuances in Nutrition 10% 15
Complex Drug-Nutrient & Herb-Nutrient Interactions 8% 12
Cultural, Ethical, & End-of-Life Nutritional Decision-
7% 10
Making
SECTION 1: ADVANCED MACRONUTRIENT & MICRONUTRIENT METABOLISM (Questions 1-23)
1. A 68-year-old client with stage 3 chronic kidney disease (CKD) and poorly controlled type 2 diabetes is being evaluated for nutritional therapy. The
client's serum phosphorus is 5.8 mg/dL (reference: 2.5-4.5 mg/dL), calcium is 8.2 mg/dL (reference: 8.5-10.2 mg/dL), and intact parathyroid hormone
(PTH) is 120 pg/mL (reference: 10-65 pg/mL). Which laboratory value most directly indicates the need to restrict dietary phosphorus, and what is the
primary rationale?
A) Serum calcium of 8.2 mg/dL; to prevent hypocalcemic crisis
B) Serum phosphorus of 5.8 mg/dL; to prevent secondary hyperparathyroidism and vascular calcification
C) Serum PTH of 120 pg/mL; to directly lower PTH through phosphorus restriction
D) Serum albumin of 3.2 g/dL; to reduce protein waste products
Correct Answer: B
Rationale: Elevated serum phosphorus (hyperphosphatemia) in CKD directly drives secondary hyperparathyroidism by complexing with calcium and
suppressing renal 1α-hydroxylase activity, reducing active vitamin D production. The resulting hypocalcemia stimulates PTH secretion. Phosphorus
restriction is indicated when serum phosphorus exceeds 4.5 mg/dL to prevent vascular calcification and bone-mineral disease. Elevated PTH is a
consequence, not the primary indicator for restriction.
2. According to the Academy of Nutrition and Dietetics and ASPEN criteria, which combination of physical assessment findings and laboratory markers
best supports a diagnosis of severe malnutrition in an adult?
A) Unintentional weight loss of 5% in 3 months, serum albumin 3.0 g/dL, and mild muscle wasting
B) Unintentional weight loss of 10% in 6 months, serum prealbumin 10 mg/dL, and generalized edema
C) Unintentional weight loss of 15% in 6 months, inadequate energy intake for 2 weeks, and severe subcutaneous fat loss
D) Body mass index of 20 kg/m², serum transferrin 200 mg/dL, and reported poor appetite
,Correct Answer: C
Rationale: According to the ASPEN malnutrition criteria, severe malnutrition requires ≥2 of the following: weight loss >10% over 6 months, inadequate
energy intake, severe loss of subcutaneous fat, severe muscle wasting, or edema. Weight loss of 15% in 6 months with inadequate intake and severe fat
loss meets criteria for severe malnutrition. Serum albumin and prealbumin are no longer sole diagnostic criteria due to their acute-phase reactant
properties.
3. A nurse is calculating the estimated energy requirement (EER) for a 45-year-old female client who is 165 cm tall, weighs 72 kg, and has a sedentary
lifestyle. Using the Mifflin-St Jeor equation, which of the following represents the correct resting metabolic rate (RMR)?
A) 1,250 kcal/day
B) 1,385 kcal/day
C) 1,495 kcal/day
D) 1,625 kcal/day
Correct Answer: B
Rationale: Mifflin-St Jeor equation for females: RMR = (10 × weight in kg) + (6.25 × height in cm) - (5 × age in years) - 161. Calculation: (10 × 72) + (6.25 ×
165) - (5 × 45) - 161 = 720 + 1031.25 - 225 - 161 = 1,365.25 ≈ 1,365 kcal/day. However, 1,385 is the closest option given rounding conventions. This
equation is more accurate than the Harris-Benedict equation for contemporary populations.
4. A client with short bowel syndrome following extensive small bowel resection is at risk for which of the following nutrient malabsorption patterns?
A) Fat-soluble vitamin deficiency only
B) Water-soluble vitamin deficiency only
C) Combined fat and water-soluble vitamin deficiency with mineral losses
D) Carbohydrate malabsorption only
Correct Answer: C
Rationale: Short bowel syndrome results in malabsorption of both fat-soluble (A, D, E, K) and water-soluble vitamins (B12, folate), as well as minerals
including calcium, magnesium, and zinc. The terminal ileum is the primary site for B12 absorption, and its resection leads to B12 deficiency. Fat
malabsorption also leads to steatorrhea and loss of fat-soluble vitamins.
5. A nurse is evaluating the protein quality of various dietary sources. Which of the following correctly ranks protein sources from highest to lowest
Protein Digestibility-Corrected Amino Acid Score (PDCAAS)?
A) Soy > Casein > Egg > Wheat
B) Casein > Egg > Soy > Wheat
C) Egg > Casein > Soy > Wheat
D) Wheat > Soy > Casein > Egg
Correct Answer: B
Rationale: PDCAAS ranks protein quality based on amino acid profile and digestibility. Casein and egg whites have a PDCAAS of 1.0 (highest possible). Soy
protein has a PDCAAS of approximately 0.92-0.98. Wheat gluten has a PDCAAS of approximately 0.4-0.5 due to limiting amino acids (lysine and threonine).
The correct ranking is Casein = Egg > Soy > Wheat.
6. A nurse is teaching a client with phenylketonuria (PKU) about dietary management. Which of the following statements by the client indicates a need
for further teaching?
A) "I need to avoid aspartame because it contains phenylalanine."
B) "I should consume a phenylalanine-free medical formula."
C) "I can eat unlimited amounts of fruits and vegetables."
D) "I need to limit my intake of high-protein foods like meat and dairy."
Correct Answer: C
Rationale: Clients with PKU must restrict phenylalanine intake from all sources, including certain fruits and vegetables that contain moderate amounts of
phenylalanine. While fruits and vegetables are generally lower in phenylalanine than animal proteins, they are not unlimited. Aspartame (NutraSweet)
contains phenylalanine and must be avoided. Phenylalanine-free medical formulas provide essential amino acids without phenylalanine.
,7. A nurse is assessing a client with suspected refeeding syndrome. Which of the following electrolyte abnormalities is the hallmark finding of
refeeding syndrome?
A) Hyperkalemia
B) Hypophosphatemia
C) Hypercalcemia
D) Hypermagnesemia
Correct Answer: B
Rationale: Refeeding syndrome is characterized by severe hypophosphatemia, which occurs when carbohydrate refeeding stimulates insulin release, driving
phosphorus intracellularly. Other findings include hypokalemia and hypomagnesemia. The condition typically occurs within 72 hours of initiating nutrition
support in severely malnourished clients.
8. A client with malabsorption syndrome has a serum magnesium level of 1.2 mEq/L (reference: 1.5-2.5 mEq/L). Which of the following clinical
manifestations should the nurse expect to assess?
A) Hyperreflexia and tetany
B) Muscle weakness and cardiac arrhythmias
C) Hypertension and tachycardia
D) Polyuria and polydipsia
Correct Answer: B
Rationale: Hypomagnesemia (serum magnesium <1.5 mEq/L) causes neuromuscular irritability, muscle weakness, tremors, and cardiac arrhythmias,
including torsades de pointes. Hyperreflexia and tetany are more characteristic of hypocalcemia. Magnesium is a cofactor for ATPase and is essential for
potassium and calcium homeostasis.
9. A nurse is calculating the carbohydrate content of a meal for a client with diabetes using the insulin-to-carbohydrate ratio of 1:15. The client plans to
consume 75 grams of carbohydrates. How many units of rapid-acting insulin should the client administer before the meal?
A) 3 units
B) 4 units
C) 5 units
D) 6 units
Correct Answer: C
Rationale: Insulin-to-carbohydrate ratio of 1:15 means 1 unit of insulin covers 15 grams of carbohydrate. 75g ÷ 15g/unit = 5 units. This calculation is
fundamental to intensive diabetes management and requires accurate carbohydrate counting.
10. A nurse is evaluating a client's understanding of omega-3 fatty acids. Which of the following statements by the client indicates correct
understanding?
A) "Omega-3 fatty acids are primarily found in vegetable oils."
B) "Omega-3 fatty acids have anti-inflammatory properties."
C) "Omega-3 fatty acids increase LDL cholesterol levels."
D) "Omega-3 fatty acids are not essential and can be synthesized by the body."
Correct Answer: B
Rationale: Omega-3 fatty acids (EPA and DHA) have potent anti-inflammatory properties and are found primarily in fatty fish (salmon, mackerel, sardines).
They are essential fatty acids that cannot be synthesized by the body. They do not increase LDL cholesterol; rather, they may modestly lower triglycerides.
11. A nurse is assessing a client's dietary intake of branched-chain amino acids (BCAAs). Which of the following foods is the richest source of BCAAs?
A) Rice
B) Whey protein
C) Olive oil
, D) Corn
Correct Answer: B
Rationale: BCAAs (leucine, isoleucine, valine) are abundant in animal proteins, particularly whey protein and meat. Leucine is a key regulator of muscle
protein synthesis. Plant sources like rice and corn are lower in BCAAs.
12. A client with cirrhosis and hepatic encephalopathy is prescribed a low-protein diet. Which of the following best explains the rationale for this
dietary modification?
A) Protein increases ammonia production from intestinal bacteria
B) Protein directly damages hepatocytes
C) Protein decreases serum albumin levels
D) Protein interferes with lactulose absorption
Correct Answer: A
Rationale: In hepatic encephalopathy, impaired liver function prevents adequate conversion of ammonia to urea. Dietary protein is metabolized by
intestinal bacteria to ammonia, which crosses the blood-brain barrier and contributes to encephalopathy. Protein restriction (often 0.6-0.8 g/kg/day) is
indicated during acute episodes, with gradual reintroduction.
13. A nurse is teaching a client about the role of dietary fiber in cholesterol management. Which type of fiber is most effective for lowering LDL
cholesterol?
A) Insoluble fiber (cellulose)
B) Soluble fiber (beta-glucan)
C) Lignin
D) Resistant starch
Correct Answer: B
Rationale: Soluble fiber (beta-glucan, pectin, psyllium) forms a gel in the intestine that binds bile acids and cholesterol, reducing their reabsorption and
lowering serum LDL cholesterol. Insoluble fiber primarily adds bulk and promotes bowel regularity.
14. A client with type 1 diabetes is experiencing recurrent hypoglycemia 2-3 hours after meals. Which of the following adjustments to the nutrition plan
is most appropriate?
A) Decrease carbohydrate intake at meals
B) Increase protein intake at meals
C) Reduce the pre-meal insulin dose
D) Add a snack containing complex carbohydrates and protein between meals
Correct Answer: D
Rationale: Late postprandial hypoglycemia may indicate insulin dosing that peaks later than carbohydrate absorption. Adding a snack containing complex
carbohydrates and protein between meals can help maintain blood glucose levels. Protein slows gastric emptying and provides a sustained glucose source
through gluconeogenesis.
15. A nurse is calculating the total daily energy expenditure (TDEE) for a client using the following data: RMR = 1,400 kcal, physical activity factor =
1.375 (light activity), and thermic effect of food (TEF) = 10% of total calories. What is the client's estimated TDEE?
A) 1,925 kcal
B) 2,117 kcal
C) 2,325 kcal
D) 2,550 kcal
Correct Answer: B
Rationale: TDEE = RMR × Physical Activity Factor + TEF. First calculate RMR × activity factor: 1,400 × 1.375 = 1,925 kcal. Then add TEF: 1,925 × 0.10 =
192.5. Total = 1,925 + 192.5 = 2,117.5 ≈ 2,117 kcal.
