WGU D440 NUTRITION OA EXAM
STUDY GUIDES (2026) | VICTORIA,
KAREEM & STEPHANIE GUIDE |
LATEST MOCK PRACTICE SET
159 Questions with Answers and Detailed Rationales
100 PERCENT GUARANTEED PASS
INSTANT DOWNLOAD ANSWERS INCLUDED
IMPORTANCE OF THIS DOCUMENT
This comprehensive examination preparation guide has been meticulously developed to help you succeed in the
WGU D440 NUTRITION OA EXAM STUDY GUIDES (2026) | VICTORIA, KAREEM & STEPHANIE GUIDE |
GUARANTEE PASS. It contains 159 carefully selected questions that reflect the most current exam content and
testing strategies. Each question is accompanied by a correct answer and a detailed rationale that explains the
underlying pathophysiology, pharmacology, or clinical reasoning.
Self-Assessment – Test your knowledge and Exam Preparation – Familiarize yourself with the
identify areas requiring further question format and content
study areas
Concept Reinforcement – Deepen your Confidence Building – Develop test-taking
understanding through strategies and reduce
evidence-based exam anxiety
rationales
Time Management – Practice answering
questions under simulated
exam conditions
Review Summary 159 Questions
Foundations - Application - WGU D440 Nutrition OA Study Guides 2026 Victoria Kareem & Stephanie
Guide Guarantee PASS WGU D440 Nutrition OA Study Guides 2026 Victoria Kareem & Stephanie Guide
Guarantee PASS University
All answers with rationales
,Table of Contents
Content Area Questions Key Topics
Dietary 1-40 Disease, Chronic, Appropriate, Kidney, Likely
Disease 41-80 Dietary, Nutrition, Chronic, Appropriate, Kidney Disease
Chronic 81-120 Dietary, Explains, Disease, Primary, Glycemic
Appropriate 121-159 Dietary, Nutrition, Deficiency, Serum, Disease
TOTAL 159 All questions include answers and detailed rationales
,Section A - Dietary
Q1.
A 55-year-old man with type 2 diabetes and chronic kidney disease (eGFR 32 mL/min) is
prescribed metformin. Which adjustment is most appropriate according to current
guidelines?
A. Discontinue metformin immediately due B. Continue metformin at reduced dose with
to contraindication at eGFR < 45 close monitoring of renal function
C. Switch to insulin glargine as first-line D. Add a sulfonylurea to compensate for
therapy reduced efficacy
Correct: B - Continue metformin at reduced dose with close monitoring of renal function
Rationale:Current guidelines allow metformin use down to eGFR 30, with dose reduction
below 45. Discontinuation is only mandated below 30. Sulfonylureas are not first-line and may
worsen renal outcomes. Insulin is second-line unless contraindications exist.
Q2.
In a nutrition-focused physical exam, which finding is most indicative of severe
protein-energy malnutrition rather than simple starvation?
A. Temporal muscle wasting B. Loss of subcutaneous fat at the triceps
C. Bilateral pitting edema of the lower D. Dry, scaly skin with hyperpigmentation
extremities
Correct: C - Bilateral pitting edema of the lower extremities
Rationale:Bilateral pitting edema reflects fluid overload from low oncotic pressure, a hallmark
of severe protein-energy malnutrition (kwashiorkor-like). Muscle wasting and fat loss occur in
both starvation and PEM. Skin changes are nonspecific.
Q3.
Which lipid parameter is most strongly associated with residual cardiovascular risk in
patients achieving LDL-C targets on statin therapy?
A. Elevated high-density lipoprotein B. Elevated lipoprotein(a) [Lp(a)]
cholesterol (HDL-C)
C. Elevated apolipoprotein B (apoB) D. Elevated triglycerides
Correct: C - Elevated apolipoprotein B (apoB)
Page 3
, Section A - Dietary
Rationale: ApoB reflects the total number of atherogenic particles and is a stronger predictor
of residual risk than LDL-C alone. Lp(a) is a causal factor but not routinely measured. HDL-C
is inversely associated but not a therapeutic target. Triglycerides are weaker after statin
therapy.
Q4.
A patient with celiac disease continues to have elevated tissue transglutaminase
antibodies despite a strict gluten-free diet. Which of the following is the most likely
explanation?
A. Non-responsive celiac disease requiring B. Hidden gluten in medications or
immunosuppressive therapy cross-contamination
C. Concurrent IgA deficiency D. Laboratory error in antibody testing
Correct: B - Hidden gluten in medications or cross-contamination
Rationale:The most common cause of persistent seropositivity is inadvertent gluten
ingestion. Non-responsive celiac disease is diagnosed only after excluding gluten exposure.
IgA deficiency would cause false-negative, not elevated, results. Lab error is less likely.
Q5.
Which of the following best explains why the DASH diet lowers blood pressure in
hypertensive individuals?
A. High potassium and calcium intake with B. Low carbohydrate content reduces
reduced sodium improves endothelial insulin-mediated sodium retention
function
C. Increased fiber intake binds to bile acids, D. High magnesium content directly blocks
reducing cholesterol synthesis calcium channels in vascular smooth muscle
Correct: A - High potassium and calcium intake with reduced sodium improves endothelial
function
Rationale:DASH emphasizes potassium, calcium, and magnesium while reducing sodium,
which collectively improve vascular function and lower BP. It is not a low-carb diet. Fiber's
effect on cholesterol is not the primary BP mechanism. Magnesium does not directly block
calcium channels.
Q6.
A patient with chronic kidney disease (not on dialysis) has a serum phosphorus of 6.2
mg/dL. Which dietary intervention is most appropriate as first-line management?
A. Restrict protein to 0.6 g/kg/day to reduce B. Advise avoiding processed foods with
phosphorus intake phosphate additives
Page 4
STUDY GUIDES (2026) | VICTORIA,
KAREEM & STEPHANIE GUIDE |
LATEST MOCK PRACTICE SET
159 Questions with Answers and Detailed Rationales
100 PERCENT GUARANTEED PASS
INSTANT DOWNLOAD ANSWERS INCLUDED
IMPORTANCE OF THIS DOCUMENT
This comprehensive examination preparation guide has been meticulously developed to help you succeed in the
WGU D440 NUTRITION OA EXAM STUDY GUIDES (2026) | VICTORIA, KAREEM & STEPHANIE GUIDE |
GUARANTEE PASS. It contains 159 carefully selected questions that reflect the most current exam content and
testing strategies. Each question is accompanied by a correct answer and a detailed rationale that explains the
underlying pathophysiology, pharmacology, or clinical reasoning.
Self-Assessment – Test your knowledge and Exam Preparation – Familiarize yourself with the
identify areas requiring further question format and content
study areas
Concept Reinforcement – Deepen your Confidence Building – Develop test-taking
understanding through strategies and reduce
evidence-based exam anxiety
rationales
Time Management – Practice answering
questions under simulated
exam conditions
Review Summary 159 Questions
Foundations - Application - WGU D440 Nutrition OA Study Guides 2026 Victoria Kareem & Stephanie
Guide Guarantee PASS WGU D440 Nutrition OA Study Guides 2026 Victoria Kareem & Stephanie Guide
Guarantee PASS University
All answers with rationales
,Table of Contents
Content Area Questions Key Topics
Dietary 1-40 Disease, Chronic, Appropriate, Kidney, Likely
Disease 41-80 Dietary, Nutrition, Chronic, Appropriate, Kidney Disease
Chronic 81-120 Dietary, Explains, Disease, Primary, Glycemic
Appropriate 121-159 Dietary, Nutrition, Deficiency, Serum, Disease
TOTAL 159 All questions include answers and detailed rationales
,Section A - Dietary
Q1.
A 55-year-old man with type 2 diabetes and chronic kidney disease (eGFR 32 mL/min) is
prescribed metformin. Which adjustment is most appropriate according to current
guidelines?
A. Discontinue metformin immediately due B. Continue metformin at reduced dose with
to contraindication at eGFR < 45 close monitoring of renal function
C. Switch to insulin glargine as first-line D. Add a sulfonylurea to compensate for
therapy reduced efficacy
Correct: B - Continue metformin at reduced dose with close monitoring of renal function
Rationale:Current guidelines allow metformin use down to eGFR 30, with dose reduction
below 45. Discontinuation is only mandated below 30. Sulfonylureas are not first-line and may
worsen renal outcomes. Insulin is second-line unless contraindications exist.
Q2.
In a nutrition-focused physical exam, which finding is most indicative of severe
protein-energy malnutrition rather than simple starvation?
A. Temporal muscle wasting B. Loss of subcutaneous fat at the triceps
C. Bilateral pitting edema of the lower D. Dry, scaly skin with hyperpigmentation
extremities
Correct: C - Bilateral pitting edema of the lower extremities
Rationale:Bilateral pitting edema reflects fluid overload from low oncotic pressure, a hallmark
of severe protein-energy malnutrition (kwashiorkor-like). Muscle wasting and fat loss occur in
both starvation and PEM. Skin changes are nonspecific.
Q3.
Which lipid parameter is most strongly associated with residual cardiovascular risk in
patients achieving LDL-C targets on statin therapy?
A. Elevated high-density lipoprotein B. Elevated lipoprotein(a) [Lp(a)]
cholesterol (HDL-C)
C. Elevated apolipoprotein B (apoB) D. Elevated triglycerides
Correct: C - Elevated apolipoprotein B (apoB)
Page 3
, Section A - Dietary
Rationale: ApoB reflects the total number of atherogenic particles and is a stronger predictor
of residual risk than LDL-C alone. Lp(a) is a causal factor but not routinely measured. HDL-C
is inversely associated but not a therapeutic target. Triglycerides are weaker after statin
therapy.
Q4.
A patient with celiac disease continues to have elevated tissue transglutaminase
antibodies despite a strict gluten-free diet. Which of the following is the most likely
explanation?
A. Non-responsive celiac disease requiring B. Hidden gluten in medications or
immunosuppressive therapy cross-contamination
C. Concurrent IgA deficiency D. Laboratory error in antibody testing
Correct: B - Hidden gluten in medications or cross-contamination
Rationale:The most common cause of persistent seropositivity is inadvertent gluten
ingestion. Non-responsive celiac disease is diagnosed only after excluding gluten exposure.
IgA deficiency would cause false-negative, not elevated, results. Lab error is less likely.
Q5.
Which of the following best explains why the DASH diet lowers blood pressure in
hypertensive individuals?
A. High potassium and calcium intake with B. Low carbohydrate content reduces
reduced sodium improves endothelial insulin-mediated sodium retention
function
C. Increased fiber intake binds to bile acids, D. High magnesium content directly blocks
reducing cholesterol synthesis calcium channels in vascular smooth muscle
Correct: A - High potassium and calcium intake with reduced sodium improves endothelial
function
Rationale:DASH emphasizes potassium, calcium, and magnesium while reducing sodium,
which collectively improve vascular function and lower BP. It is not a low-carb diet. Fiber's
effect on cholesterol is not the primary BP mechanism. Magnesium does not directly block
calcium channels.
Q6.
A patient with chronic kidney disease (not on dialysis) has a serum phosphorus of 6.2
mg/dL. Which dietary intervention is most appropriate as first-line management?
A. Restrict protein to 0.6 g/kg/day to reduce B. Advise avoiding processed foods with
phosphorus intake phosphate additives
Page 4
