the nurse is assessing an infant with pyloric stenosis which pathophysiological mechanism is the most likely consequence of this infants clinical pict
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Nursing Elites

HESI RN

HESI Pediatrics Practice Exam

1. The healthcare provider is assessing an infant with pyloric stenosis. Which pathophysiological mechanism is the most likely consequence of this infant's clinical picture?

Correct answer: A

Rationale: Pyloric stenosis leads to obstruction at the outlet of the stomach, causing frequent vomiting and loss of stomach acids. This results in a loss of hydrochloric acid and hydrogen ions, leading to metabolic alkalosis due to an increase in serum bicarbonate levels. Therefore, the correct answer is metabolic alkalosis. Choice B, respiratory acidosis, is incorrect as it is not typically associated with pyloric stenosis. Choice C, metabolic acidosis, is incorrect because the loss of stomach acids in pyloric stenosis leads to metabolic alkalosis, not acidosis. Choice D, respiratory alkalosis, is also incorrect as it is not the usual consequence of pyloric stenosis.

2. When reviewing developmental changes with the parents of a 6-month-old infant, what information should the practical nurse reinforce?

Correct answer: C

Rationale: The correct answer is C because providing a developmentally safe environment for a 6-month-old infant is crucial as they begin to explore their surroundings more actively. This includes ensuring that the environment is free of hazards and that the infant is supervised to prevent accidents. Choice A is incorrect because self-feeding finger foods may not be developmentally appropriate for a 6-month-old infant. Choice B is incorrect as most infants are able to sit up with support around 6 months of age without the need for specific teaching strategies. Choice D is also incorrect as while appetite changes can occur, explaining a specific increase in appetite over the next 6 months is not a primary focus when discussing developmental changes with parents of a 6-month-old.

3. A 2-year-old girl is brought to the clinic by her 17-year-old mother. When the nurse observes that the child is drinking sweetened soda from her bottle, what information should the nurse discuss with this mother?

Correct answer: B

Rationale: Dental caries are a common concern when children consume sweetened sodas regularly.

4. A 6-year-old child is diagnosed with rheumatic fever and demonstrates associated chorea (sudden aimless movements of the arms and legs). Which information should the nurse provide to the parents?

Correct answer: C

Rationale: Chorea associated with rheumatic fever is usually temporary and will subside over time.

5. What age-appropriate play activity should the practical nurse suggest to the parents of a 7-month-old infant to encourage visual stimulation?

Correct answer: A

Rationale: The practical nurse should suggest playing peek-a-boo to the parents of a 7-month-old infant to encourage visual stimulation. Peek-a-boo is a suitable game for this age group as it helps develop visual tracking skills and the concept of object permanence. By covering and uncovering their face or a toy, the infant learns that things still exist even when they cannot be seen, promoting cognitive development and visual engagement.

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