WGU D440 HESI NUTRITION
(OA) OBJECTIVE ASSESSMENT
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EXAM-STYLE REVIEW
AT WESTERN GOVERNORS UNIVERSITY
EXAM QUESTIONS & (UPDATED)
ANSWERS
EXAM NAME: HESI Nutrition Objective Assessment (OA)
(sometimes listed internally as the D440 Nutrition Objective
Assessment)
PROGRAM: Western Governors University (WGU)
COURSE NAME: Health and Wellness Through Nutritional
Science
WGU D440 HESI NUTRITION
,WGU D440 HESI Nutrition Objective Assessment
High-Yield Case Scenario Questions & Rationales
Question 1: Macronutrient Energy Balance
A nurse is caring for a 45-year-old client who reports progressive weight gain, fatigue,
and poor dietary habits over the last several years. The client states that meals are
frequently high in processed foods and sugar-sweetened beverages while physical
activity is minimal. Laboratory findings reveal elevated triglycerides and fasting blood
glucose. The nurse recognizes that long-term positive energy balance contributes
significantly to the client’s condition. Which explanation best describes positive energy
balance?
Calories burned exceed calories consumed
Protein intake is lower than carbohydrate intake
Caloric intake consistently exceeds caloric expenditure
Fat intake is completely eliminated from the diet
Rationale:
Positive energy balance occurs when the body consumes more calories than it uses for
metabolism and physical activity. Excess calories are stored primarily as adipose tissue,
contributing to weight gain and obesity. Long-term obesity increases the risk for
metabolic syndrome, cardiovascular disease, and type 2 diabetes mellitus. Processed
foods and sugar-sweetened beverages are major contributors to excessive caloric
intake. Nutritional counseling and increased physical activity are essential for restoring
healthy energy balance.
Question 2: Protein Deficiency and Healing
,A nurse is caring for an older adult client recovering from surgery who has poor wound
healing, muscle wasting, and low serum albumin levels. The client reports difficulty
affording protein-rich foods and often skips meals. The healthcare provider explains the
importance of adequate protein intake during recovery. Which function of protein is
most important for this client?
Primary source of immediate cellular energy
Regulation of calcium absorption in the intestines
Tissue repair and maintenance of body structures
Production of bile for fat digestion
Rationale:
Proteins are essential for tissue growth, repair, and maintenance, particularly after
surgery or illness. Amino acids are necessary for collagen synthesis, immune function,
and wound healing. Protein deficiency can lead to muscle wasting, edema, and delayed
recovery. Older adults are especially vulnerable due to decreased appetite and chronic
illness. Encouraging affordable protein sources such as beans, eggs, and dairy products
can improve nutritional status and healing outcomes.
Question 3: Carbohydrate Metabolism
A nurse is teaching a client with newly diagnosed diabetes mellitus about carbohydrate
metabolism and blood glucose control. The client frequently consumes refined
carbohydrates and sugary snacks throughout the day. Laboratory studies reveal elevated
hemoglobin A1C levels. Which statement best describes the primary role of
carbohydrates in the body?
Storage of fat-soluble vitamins
Formation of connective tissue structures
Primary source of energy for body cells
Regulation of blood clotting mechanisms
, Rationale:
Carbohydrates are the body’s preferred and primary energy source, especially for the
brain and nervous system. During digestion, carbohydrates are broken down into
glucose, which cells use to produce ATP. Excessive intake of refined carbohydrates can
contribute to hyperglycemia and insulin resistance. Complex carbohydrates with fiber
are healthier options because they produce slower glucose absorption. Proper
carbohydrate management is essential in diabetes care.
Question 4: Lipid Function and Cardiovascular Risk
A nurse is caring for a client with obesity, hypertension, and elevated LDL cholesterol
levels. The client reports consuming large amounts of fried foods and saturated fats. The
provider discusses dietary modifications to reduce cardiovascular risk. Which statement
best describes the role of lipids in the body?
They serve as the body’s only energy source
They provide energy storage and support hormone production
They directly produce red blood cells
They regulate oxygen transport in circulation
Rationale:
Lipids serve multiple functions including long-term energy storage, insulation, and
hormone production. Cholesterol is necessary for synthesis of steroid hormones and cell
membranes. However, excessive intake of saturated and trans fats contributes to
atherosclerosis and cardiovascular disease. Elevated LDL cholesterol increases plaque
formation within arteries. Replacing unhealthy fats with unsaturated fats can improve
cardiovascular health.
Question 5: Fiber Intake and Gastrointestinal Health