WGU D440 NUTRITION OA 2026 –
COMPLETE STUDY GUIDE | 159 MUST-
KNOW QUESTIONS AND ANSWERS +
PROVEN TIPS TO PASS ON YOUR FIRST
TRY
1. Describe the significance of monitoring glucose levels during total
parenteral nutrition (TPN).
A. Monitoring glucose helps in determining the patient's hydration status
B. Monitoring glucose levels during TPN is crucial to prevent hyperglycemia and
ensure proper metabolic function
C. Glucose levels are monitored to assess protein intake
D. Monitoring glucose levels is unnecessary during TPN
Answer: B. Monitoring glucose levels during TPN is crucial to prevent hyperglycemia
and ensure proper metabolic function
Rationale: TPN contains high concentrations of glucose, which can lead to
hyperglycemia if not monitored. Regular glucose checks help prevent complications
such as infection, osmotic diuresis, and electrolyte imbalances. Proper glucose
monitoring ensures metabolic stability and patient safety during TPN administration.
2. A patient is told she is allowed to have ground or finely diced meats,
flaked fish, cottage cheese, cheese, rice, potatoes, pancakes, light breads,
cooked vegetables, cooked or canned fruits, bananas, soups, peanut butter,
eggs that are not fried. What type of diet is she on?
A. Clear Liquid
B. Pureed
C. Mechanical Soft
D. Full Liquid
,Answer: C. Mechanical Soft
Rationale: A mechanical soft diet consists of foods that are soft, easily chewed, and
easy to swallow, often for patients with dental issues, difficulty swallowing, or
gastrointestinal problems. It includes cooked vegetables, soft fruits, tender meats, and
dairy. It is more substantial than a pureed diet but still limits foods that require
extensive chewing.
3. Which vitamin is primarily associated with sources such as beef, liver, and
clams?
A. B12
B. C
C. A
D. D
Answer: A. B12
Rationale: Vitamin B12 (cobalamin) is primarily found in animal-derived foods such
as liver, beef, clams, eggs, and dairy. It is essential for red blood cell formation,
neurological function, and DNA synthesis. Vegetarians and vegans are at risk for B12
deficiency and may require supplementation.
4. What are the symptoms of Vitamin B12 deficiency?
A. Nausea and vomiting
B. Dry skin and hair loss
C. Fatigue and weakness
D. Ataxia and tremors
Answer: D. Ataxia and tremors
Rationale: Vitamin B12 deficiency affects neurological function, causing symptoms
such as ataxia (loss of coordination), tremors, numbness, and memory problems. It
can also lead to megaloblastic anemia, fatigue, and weakness. Early detection is
crucial to prevent permanent neurological damage.
,5. Describe the role of magnesium in the human diet.
A. Magnesium is primarily used for energy production and is found in dairy products
B. Magnesium is important for blood clotting and is mainly found in fruits
C. Magnesium is essential for various bodily functions, including muscle and nerve
function, and is found in foods like cocoa, legumes, and nuts
D. Magnesium is crucial for DNA synthesis and is abundant in meats
Answer: C. Magnesium is essential for various bodily functions, including muscle and
nerve function, and is found in foods like cocoa, legumes, and nuts
Rationale: Magnesium plays a critical role in over 300 enzymatic reactions, including
muscle contraction, nerve function, and energy production. It also contributes to bone
health and cardiovascular function. Sources include leafy greens, nuts, seeds,
legumes, and whole grains.
6. An open feeding set needs to be changed:
A. 24 hours
B. 72 hours
Answer: A. 24 hours
Rationale: Open feeding sets for enteral nutrition must be changed every 24 hours to
prevent bacterial contamination and infection. Closed systems can last longer, but
open systems expose formula to air, increasing the risk of microbial growth. Proper
infection control is critical for patient safety.
7. Sodium can be found in which food sources?
A. Table salts
B. Condiments
C. Salty foods
D. All of the above
, Answer: D. All of the above
Rationale: Sodium is naturally present in some foods and is added to many
processed or packaged foods, table salt, and condiments. Excess sodium intake is
linked to hypertension and cardiovascular disease, so monitoring dietary intake is
important for health.
8. Describe the significance of Vitamin B12 in the diet and its primary food
sources.
A. Vitamin B12 is essential for red blood cell formation and neurological function, and
it is primarily found in animal products such as beef, liver, and dairy
B. Vitamin B12 is important for skin health and is found in fruits and vegetables
C. Vitamin B12 is crucial for bone health and is mainly found in nuts and seeds
D. Vitamin B12 is necessary for muscle repair and is found in whole grains
Answer: A. Vitamin B12 is essential for red blood cell formation and neurological
function, and it is primarily found in animal products such as beef, liver, and dairy
Rationale: B12 supports neurological health, DNA synthesis, and red blood cell
formation. Animal products are the primary source, so supplementation is important
for those on a plant-based diet. Deficiency can lead to megaloblastic anemia and
neurological complications.
9. Describe the implications of hypocalcemia for patient care and dietary
management.
A. Hypocalcemia is a normal condition that requires no dietary changes
B. Hypocalcemia indicates high calcium levels, which can improve bone health
C. Hypocalcemia indicates low calcium levels, which can lead to various health issues
requiring dietary adjustments
D. Hypocalcemia is unrelated to dietary management
Answer: C. Hypocalcemia indicates low calcium levels, which can lead to various
health issues requiring dietary adjustments
Rationale: Low calcium levels can cause muscle cramps, tetany, osteoporosis, and
cardiac arrhythmias. Dietary management includes increasing calcium-rich foods such
COMPLETE STUDY GUIDE | 159 MUST-
KNOW QUESTIONS AND ANSWERS +
PROVEN TIPS TO PASS ON YOUR FIRST
TRY
1. Describe the significance of monitoring glucose levels during total
parenteral nutrition (TPN).
A. Monitoring glucose helps in determining the patient's hydration status
B. Monitoring glucose levels during TPN is crucial to prevent hyperglycemia and
ensure proper metabolic function
C. Glucose levels are monitored to assess protein intake
D. Monitoring glucose levels is unnecessary during TPN
Answer: B. Monitoring glucose levels during TPN is crucial to prevent hyperglycemia
and ensure proper metabolic function
Rationale: TPN contains high concentrations of glucose, which can lead to
hyperglycemia if not monitored. Regular glucose checks help prevent complications
such as infection, osmotic diuresis, and electrolyte imbalances. Proper glucose
monitoring ensures metabolic stability and patient safety during TPN administration.
2. A patient is told she is allowed to have ground or finely diced meats,
flaked fish, cottage cheese, cheese, rice, potatoes, pancakes, light breads,
cooked vegetables, cooked or canned fruits, bananas, soups, peanut butter,
eggs that are not fried. What type of diet is she on?
A. Clear Liquid
B. Pureed
C. Mechanical Soft
D. Full Liquid
,Answer: C. Mechanical Soft
Rationale: A mechanical soft diet consists of foods that are soft, easily chewed, and
easy to swallow, often for patients with dental issues, difficulty swallowing, or
gastrointestinal problems. It includes cooked vegetables, soft fruits, tender meats, and
dairy. It is more substantial than a pureed diet but still limits foods that require
extensive chewing.
3. Which vitamin is primarily associated with sources such as beef, liver, and
clams?
A. B12
B. C
C. A
D. D
Answer: A. B12
Rationale: Vitamin B12 (cobalamin) is primarily found in animal-derived foods such
as liver, beef, clams, eggs, and dairy. It is essential for red blood cell formation,
neurological function, and DNA synthesis. Vegetarians and vegans are at risk for B12
deficiency and may require supplementation.
4. What are the symptoms of Vitamin B12 deficiency?
A. Nausea and vomiting
B. Dry skin and hair loss
C. Fatigue and weakness
D. Ataxia and tremors
Answer: D. Ataxia and tremors
Rationale: Vitamin B12 deficiency affects neurological function, causing symptoms
such as ataxia (loss of coordination), tremors, numbness, and memory problems. It
can also lead to megaloblastic anemia, fatigue, and weakness. Early detection is
crucial to prevent permanent neurological damage.
,5. Describe the role of magnesium in the human diet.
A. Magnesium is primarily used for energy production and is found in dairy products
B. Magnesium is important for blood clotting and is mainly found in fruits
C. Magnesium is essential for various bodily functions, including muscle and nerve
function, and is found in foods like cocoa, legumes, and nuts
D. Magnesium is crucial for DNA synthesis and is abundant in meats
Answer: C. Magnesium is essential for various bodily functions, including muscle and
nerve function, and is found in foods like cocoa, legumes, and nuts
Rationale: Magnesium plays a critical role in over 300 enzymatic reactions, including
muscle contraction, nerve function, and energy production. It also contributes to bone
health and cardiovascular function. Sources include leafy greens, nuts, seeds,
legumes, and whole grains.
6. An open feeding set needs to be changed:
A. 24 hours
B. 72 hours
Answer: A. 24 hours
Rationale: Open feeding sets for enteral nutrition must be changed every 24 hours to
prevent bacterial contamination and infection. Closed systems can last longer, but
open systems expose formula to air, increasing the risk of microbial growth. Proper
infection control is critical for patient safety.
7. Sodium can be found in which food sources?
A. Table salts
B. Condiments
C. Salty foods
D. All of the above
, Answer: D. All of the above
Rationale: Sodium is naturally present in some foods and is added to many
processed or packaged foods, table salt, and condiments. Excess sodium intake is
linked to hypertension and cardiovascular disease, so monitoring dietary intake is
important for health.
8. Describe the significance of Vitamin B12 in the diet and its primary food
sources.
A. Vitamin B12 is essential for red blood cell formation and neurological function, and
it is primarily found in animal products such as beef, liver, and dairy
B. Vitamin B12 is important for skin health and is found in fruits and vegetables
C. Vitamin B12 is crucial for bone health and is mainly found in nuts and seeds
D. Vitamin B12 is necessary for muscle repair and is found in whole grains
Answer: A. Vitamin B12 is essential for red blood cell formation and neurological
function, and it is primarily found in animal products such as beef, liver, and dairy
Rationale: B12 supports neurological health, DNA synthesis, and red blood cell
formation. Animal products are the primary source, so supplementation is important
for those on a plant-based diet. Deficiency can lead to megaloblastic anemia and
neurological complications.
9. Describe the implications of hypocalcemia for patient care and dietary
management.
A. Hypocalcemia is a normal condition that requires no dietary changes
B. Hypocalcemia indicates high calcium levels, which can improve bone health
C. Hypocalcemia indicates low calcium levels, which can lead to various health issues
requiring dietary adjustments
D. Hypocalcemia is unrelated to dietary management
Answer: C. Hypocalcemia indicates low calcium levels, which can lead to various
health issues requiring dietary adjustments
Rationale: Low calcium levels can cause muscle cramps, tetany, osteoporosis, and
cardiac arrhythmias. Dietary management includes increasing calcium-rich foods such
