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?
- A. Metabolic alkalosis.
- B. Respiratory acidosis.
- C. Metabolic acidosis.
- D. Respiratory alkalosis.
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 planning care for a child diagnosed with rheumatic fever, what is the primary goal of nursing care?
- A. Reduce fever.
- B. Maintain fluid and electrolyte balance.
- C. Prevent cardiac damage.
- D. Maintain joint mobility and function.
Correct answer: C
Rationale: The primary goal of nursing care for a child diagnosed with rheumatic fever is to prevent cardiac damage. Rheumatic fever can lead to complications affecting the heart, making it crucial to monitor and prevent cardiac involvement to avoid long-term consequences. While addressing fever and joint pain are important aspects of care, preventing cardiac damage takes precedence in managing rheumatic fever. Therefore, choices A, B, and D are not the primary goals of nursing care in this case.
3. When caring for a child experiencing severe asthma symptoms, which medication should the practical nurse anticipate being administered first?
- A. Inhaled corticosteroids.
- B. Oral corticosteroids.
- C. Short-acting beta agonists.
- D. Leukotriene receptor antagonists.
Correct answer: C
Rationale: In the management of acute asthma exacerbations, the first-line medication for quick relief of bronchoconstriction is a short-acting beta agonist, such as albuterol. These medications help to rapidly open up the airways, providing immediate relief to the patient. Inhaled corticosteroids are more commonly used for long-term control of asthma symptoms, while oral corticosteroids and leukotriene receptor antagonists are often reserved for more severe or chronic cases. Therefore, in a child experiencing severe asthma symptoms, the practical nurse should anticipate the administration of short-acting beta agonists as the initial intervention to provide quick relief and improve breathing.
4. The infant scheduled for reduction of intussusception passes a soft-formed brown stool the day before the procedure. What intervention should the nurse implement?
- A. Instruct the parents that the infant needs to be NPO.
- B. Notify the healthcare provider of the passage of brown stool.
- C. Obtain a stool specimen for laboratory analysis.
- D. Ask the parents about recent changes in the infant's diet.
Correct answer: B
Rationale: Notifying the healthcare provider is crucial when an infant scheduled for intussusception reduction passes a soft-formed brown stool as it may indicate spontaneous reduction of the intussusception. The healthcare provider needs to be informed to assess if the procedure is still necessary or if further evaluation is required. Instructing the parents that the infant needs to be NPO (nothing by mouth) is not the immediate action required in this situation. Obtaining a stool specimen for laboratory analysis is not necessary as the soft-formed brown stool is likely a result of the intussusception spontaneously reducing. Asking about recent changes in the infant's diet is not the most appropriate action when brown stool is passed before the procedure for intussusception reduction.
5. The mother of a 9-month-old girl provides the practical nurse with information about her daughter's diet. Which statement by the mother may indicate why the infant has been diagnosed with iron-deficiency anemia?
- A. She almost never drinks sugary water.
- B. She has been on whole milk for 7 months.
- C. She likes to chew on bread as a snack.
- D. She doesn't like to eat peaches or pears.
Correct answer: B
Rationale: The correct answer is B. Infants should not be given cow's milk before 1 year of age as it can interfere with iron absorption and lead to anemia. Choice A is incorrect as avoiding sugary water is actually a good practice. Choice C is unrelated to iron-deficiency anemia. Choice D, not liking peaches or pears, is also not directly related to iron-deficiency anemia.
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