Free NSC Clinical Evaluation Questions and Answers — Questions and Answers
Question 1: A successful program for nutrition screening:
- Is based on the principles of sensitivity and specificity (Correct answer)
- Involves all members of the health care team who want to participate
- Is used only to screen for childhood diseases
- Always uses food frequency questionnaires
Correct answer: Is based on the principles of sensitivity and specificity
A successful nutrition screening program must be highly accurate in identifying individuals at nutritional risk. Sensitivity refers to the program's ability to correctly identify those who *do* have a nutritional problem (true positives), while specificity refers to its ability to correctly identify those who *do not* have a nutritional problem (true negatives). Both principles are fundamental for ensuring the screening tool is reliable and effective, minimizing both false positives and false negatives.
Question 2: Which of the following gastrointestinal procedures has the greatest negative impact on one's ability to eat?
- Billroth II
- Jejunal resection
- Ileal resection (Correct answer)
- Billroth I
Correct answer: Ileal resection
The ileum is the final and longest section of the small intestine, playing a critical role in the absorption of key nutrients, including vitamin B12, bile salts, and fat-soluble vitamins. An ileal resection (surgical removal of part of the ileum) can severely impair these absorptive functions, leading to significant malabsorption and a higher risk of nutritional deficiencies compared to resections in other gastrointestinal areas, thus having the greatest negative impact on one's ability to eat and utilize nutrients.
Question 3: DASH diets are frequently used to treat:
- Hepatitis
- Diabetes mellitus
- Hypertension (Correct answer)
- Nephritis
Correct answer: Hypertension
DASH stands for Dietary Approaches to Stop Hypertension. As its name explicitly indicates, the DASH diet was specifically developed to help prevent and manage high blood pressure (hypertension). It achieves this by promoting a diet rich in fruits, vegetables, whole grains, and lean protein, while limiting sodium, saturated fat, and cholesterol.
Question 4: Which of the following goals does the National Health and Nutrition Examination Survey (NHANES) aim to achieve?
- Collection of dietary data using 24-hour recalls (Correct answer)
- Ongoing collection of health data from Americans < 65 years of age
- Identification of low birth weight infants
- Treatment for elevated blood lipid levels
Correct answer: Collection of dietary data using 24-hour recalls
The National Health and Nutrition Examination Survey (NHANES) is a major program conducted by the CDC to assess the health and nutritional status of adults and children in the United States. A core objective of NHANES is to collect comprehensive dietary intake data from participants, primarily through two 24-hour dietary recalls, to monitor national trends in diet and nutrition over time.
Question 5: Dumping syndrome has a connection to:
- Reactive hypoglycemia
- Osmotic movement of water into the jejunum due to the presence of carbohydrate
- Gastric resection surgery
- All of the above (Correct answer)
Correct answer: All of the above
Dumping syndrome is a common complication following gastric resection surgery, where food rapidly enters the jejunum. The presence of hyperosmolar carbohydrates in the jejunum draws water into the lumen, causing osmotic symptoms. This rapid absorption can also lead to an exaggerated insulin response, resulting in reactive hypoglycemia.
Question 6: The following are indications of liver cirrhosis:
- Portal hypotension and constriction of esophageal veins
- Ascites and hypoalbuminemia (Correct answer)
- Decreased hepatic plasma volume and high osmolality
- Fat malabsorption and hyponatremia
Correct answer: Ascites and hypoalbuminemia
Liver cirrhosis impairs the liver's ability to synthesize albumin, a critical protein for maintaining oncotic pressure, leading to hypoalbuminemia. This low albumin level causes fluid to leak from blood vessels into the abdominal cavity, resulting in ascites. Therefore, ascites and hypoalbuminemia are key clinical indications of liver cirrhosis.
Question 7: By using the Guthrie test, one can diagnose:
- Ornithine transcarboxylase deficiency
- Glycogen storage disase
- Phenylketonuria (Correct answer)
- Galactosemia
Correct answer: Phenylketonuria
The Guthrie test is a widely recognized and utilized screening method for diagnosing Phenylketonuria (PKU) in newborns. This test detects elevated levels of phenylalanine in a blood sample, indicating the genetic disorder where the body cannot properly metabolize this amino acid. Early diagnosis through the Guthrie test is crucial for initiating treatment and preventing severe neurological damage.
Question 8: Among the objectives of cystic fibrosis treatment are:
- Increased energy, protein, and fat intakes
- Pancreatic enzyme replacement
- Pancreatic enzyme replacement & Increased energy, protein, and fat intakes (Correct answer)
- Sodium restriction
Correct answer: Pancreatic enzyme replacement & Increased energy, protein, and fat intakes
Cystic fibrosis causes pancreatic insufficiency, leading to malabsorption of fats, proteins, and fat-soluble vitamins. Therefore, pancreatic enzyme replacement is essential to improve digestion and nutrient absorption. Additionally, patients with cystic fibrosis have increased energy needs due to chronic infection and malabsorption, requiring significantly higher intakes of energy, protein, and fat to maintain nutritional status and support growth.
Question 9: Of the following, only one is untrue regarding a low serum albumin level?
- It is commonly seen in nephrotic syndrome
- It may be associated with ascites
- It may be an indicator of kwashiorkor
- It may be used to diagnosis esophageal reflux (Correct answer)
Correct answer: It may be used to diagnosis esophageal reflux
Low serum albumin is a common finding in conditions like nephrotic syndrome (due to protein loss), kwashiorkor (severe protein malnutrition), and ascites (due to reduced oncotic pressure). However, serum albumin levels are not a diagnostic marker for esophageal reflux. Esophageal reflux is typically diagnosed based on symptoms, endoscopy, or pH monitoring.
Question 10: An autosomal recessive condition in babies known as maple-syrup urine disease (MSUD) is brought on by:
- The inability to metabolize branched-chain amino acids & A defect in the gene that controls the activity of alpha-keto acid hydrogenase (Correct answer)
- The inability to metabolize branched-chain amino acids
- Plasma leucine levels exceeding 10 mg/dl
- A defect in the gene that controls the activity of alpha-keto acid hydrogenase
Correct answer: The inability to metabolize branched-chain amino acids & A defect in the gene that controls the activity of alpha-keto acid hydrogenase
Maple-syrup urine disease (MSUD) is an autosomal recessive disorder caused by the body's inability to metabolize branched-chain amino acids (BCAAs) like leucine, isoleucine, and valine. This metabolic defect is due to a deficiency in the branched-chain alpha-keto acid dehydrogenase complex, an enzyme crucial for BCAA breakdown. The accumulation of these amino acids and their keto acids leads to the characteristic sweet-smelling urine and severe neurological damage if untreated.
Question 11: The definition of impaired glucose tolerance is:
- 2-hour plasma glucose between 140-199 mg/dl (Correct answer)
- Fasting plasma glucose (FPG) > 140 mg/dl
- An HbA1c level of 6 or greater
- Casual plasma glucose of 200 mg/dl or greater
Correct answer: 2-hour plasma glucose between 140-199 mg/dl
Impaired glucose tolerance (IGT) is a prediabetic state defined by a 2-hour plasma glucose level between 140-199 mg/dL (7.8-11.0 mmol/L) during an oral glucose tolerance test (OGTT). This indicates that blood glucose levels are higher than normal but not yet high enough to be diagnosed as type 2 diabetes. It signifies an increased risk for developing diabetes and cardiovascular disease.
Free NSC Clinical Evaluation Questions and Answers
A successful program for nutrition screening: