what is a key dietary consideration for a child with phenylketonuria pku

HESI LPN

LPN Nutrition Practice Test

1. What is a key dietary consideration for a child with phenylketonuria (PKU)?

A. High-fiber diet
B. Low-phenylalanine diet
C. Increased dairy intake
D. High-sodium diet

Correct answer: B

Rationale: A low-phenylalanine diet is crucial for managing PKU to prevent neurological damage and maintain normal development. Phenylalanine is an amino acid found in protein-containing foods, and individuals with PKU have difficulty metabolizing it. Consuming foods low in phenylalanine helps prevent the buildup of toxic byproducts in the body. Choices A, C, and D are incorrect. A high-fiber diet, increased dairy intake, and high-sodium diet are not specific dietary considerations for PKU management. In fact, dairy products are a source of protein and phenylalanine, which should be limited in PKU.

2. What is the primary goal in managing a child with cystic fibrosis?

A. Increase dietary fat intake
B. Prevent lung infections
C. Increase physical activity
D. Ensure high protein intake

Correct answer: B

Rationale: The primary goal in managing a child with cystic fibrosis is to prevent lung infections. Cystic fibrosis primarily affects the respiratory system, leading to thick mucus buildup in the lungs, which increases the risk of infections. Preventing lung infections through proper respiratory care, medications, airway clearance techniques, and vaccinations is crucial in managing cystic fibrosis. While dietary interventions like increasing dietary fat intake, ensuring high protein intake, and promoting physical activity are also important aspects of cystic fibrosis management, preventing lung infections takes precedence as it directly addresses a major complication of the condition.

3. How should a healthcare provider handle a child with a suspected head injury who is showing signs of drowsiness?

A. Administer pain medication
B. Perform a full neurological assessment
C. Allow the child to sleep
D. Contact a specialist immediately

Correct answer: B

Rationale: When a child with a suspected head injury is showing signs of drowsiness, administering pain medication should not be the first course of action as it may mask important symptoms. Allowing the child to sleep is not recommended as they need to be monitored. Contacting a specialist immediately may delay necessary assessments. Performing a full neurological assessment is the most appropriate action because it helps evaluate the head injury's extent, identify neurological deficits, and guide further intervention or treatment.

4. An essential nutrient is one that ___

A. must be made in large quantities by the body
B. can only be synthesized by the body
C. cannot be made in sufficient quantities by the body
D. is used to synthesize other compounds in the body

Correct answer: C

Rationale: An essential nutrient is a substance that cannot be made in sufficient quantities by the body itself, so it must be obtained from the diet. Choice A is incorrect because essential nutrients are required in specific amounts, not necessarily large quantities. Choice B is incorrect as essential nutrients cannot be synthesized by the body at all. Choice D is incorrect because although essential nutrients may be used in the synthesis of other compounds, that is not the defining characteristic of an essential nutrient.

5. What is a common sign of dehydration in infants?

A. Decreased urination
B. Dry mouth and lips
C. Increased appetite
D. Normal skin turgor

Correct answer: B

Rationale: Dry mouth and lips are common signs of dehydration in infants. When an infant is dehydrated, the body conserves water, resulting in less urine production and concentrated urine. This leads to decreased frequency of urination rather than frequent urination, making choice A incorrect. Choice C, increased appetite, is not typically associated with dehydration in infants but rather with normal growth and development. Normal skin turgor, as mentioned in choice D, is a sign of hydration and not dehydration, making it an incorrect choice. Therefore, the correct answer is B, dry mouth and lips, which indicate a need for fluid replacement.