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. The practical nurse is caring for a child who was admitted for treatment of seizures. Which intervention should the nurse implement to help prevent injury from a seizure?

Correct answer: B

Rationale: The correct intervention to help prevent injury during a seizure is to keep the side rails padded and in an upright position. This measure helps to ensure the child's safety by preventing falls or accidental injuries. Using a padded tongue depressor or restraining the child can potentially cause harm and are not recommended. Placing a padded helmet is not a standard intervention for seizure safety in this scenario.

3. The nurse is assessing a 4-year-old child who is brought to the clinic for a routine checkup. The child’s parent reports that the child has been more irritable and less active over the past week. The nurse notes a petechial rash on the child’s trunk and extremities. What should the nurse do first?

Correct answer: D

Rationale: In this scenario, the child's presentation with irritability, decreased activity, and a petechial rash raises concern for a serious condition like meningitis. Petechial rash can be indicative of meningitis or other critical illnesses. Therefore, the nurse's priority should be to notify the healthcare provider immediately to ensure prompt evaluation and appropriate management. Asking about recent exposure to contagious diseases may be relevant later but is not the most urgent action. Reviewing the child's immunization record and measuring the temperature can provide valuable information but should not take precedence over the need to address the potential serious condition indicated by the petechial rash.

4. The parents of a 9-month-old infant are being educated about preventing iron deficiency anemia. Which statement by the parent indicates a correct understanding of the teaching?

Correct answer: B

Rationale: The correct answer is B: 'I will give my baby iron-fortified cereal.' Iron-fortified cereal is an excellent source of iron for infants, aiding in the prevention of iron deficiency anemia. Choice A is incorrect as whole cow’s milk should not be introduced until the child is at least 12 months old to prevent iron deficiency. Choice C is incorrect because giving fruit juice between meals can interfere with iron absorption. Choice D is incorrect as giving water with meals can decrease nutrient intake. Therefore, the best choice to prevent iron deficiency anemia in a 9-month-old infant is to give them iron-fortified cereal.

5. The nurse is caring for a 4-year-old child who is hospitalized with pneumonia. The child is receiving IV antibiotics and oxygen therapy. The nurse notes that the child’s respiratory rate is 40 breaths per minute, and the oxygen saturation is 92%. What is the nurse’s priority action?

Correct answer: D

Rationale: In this scenario, the child is hospitalized with pneumonia, receiving IV antibiotics and oxygen therapy. With a high respiratory rate and decreased oxygen saturation, auscultating the child’s lung sounds is the priority action. This assessment can provide crucial information about the child’s respiratory status, such as the presence of adventitious sounds or decreased air entry, which can guide further interventions and help in evaluating the effectiveness of the current treatments. Increasing the oxygen flow rate may not address the underlying issue causing the decreased oxygen saturation. Notifying the healthcare provider can be necessary but auscultating lung sounds should be done first to gather more information. Encouraging the child to take deep breaths is important for respiratory function but should not be the immediate priority in this situation.

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