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. What action should the nurse take when a child presents with fever, sore throat, swollen red spots, and fluid-filled blisters?
- A. Obtain a fluid culture from the blisters
- B. Administer a fever-reducing medication
- C. Cover the drainage vesicles with a dressing
- D. Implement transmission precautions
Correct answer: D
Rationale: When a child presents with fever, sore throat, swollen red spots, and fluid-filled blisters, it may indicate a contagious viral infection. In such cases, implementing transmission precautions is crucial to prevent the spread of the infection to others in the pediatric clinic or community. Obtaining a fluid culture from the blisters (Choice A) may not be necessary at the initial stage without knowing the cause of the infection. Administering a fever-reducing medication (Choice B) may help manage symptoms but doesn't address the need for preventing transmission. Covering the drainage vesicles with a dressing (Choice C) may provide comfort to the child but does not directly address the risk of transmission to others.
3. The caregiver is caring for a 10-year-old child with a history of frequent ear infections. The parents are concerned about their child’s hearing and speech development. What is the caregiver’s best response?
- A. Let’s schedule a hearing test and refer to a speech therapist if needed
- B. Most children outgrow ear infections and speech delays
- C. There is no need to worry unless the infections persist into adolescence
- D. Your child’s hearing and speech should be normal by now
Correct answer: A
Rationale: The appropriate response for the caregiver is to address the parents' concerns by suggesting scheduling a hearing test and potentially referring the child to a speech therapist if necessary. This proactive approach can help evaluate and support the child's hearing and speech development effectively. Choice B is incorrect as assuming that most children outgrow ear infections and speech delays may overlook potential issues that need intervention. Choice C is wrong because waiting until adolescence to address concerns may lead to missed opportunities for early intervention. Choice D is incorrect as it dismisses the parents' valid concerns without offering a solution or further evaluation.
4. The healthcare provider is evaluating the effects of thyroid therapy used to treat a 5-month-old with hypothyroidism. Which behavior indicates that the treatment has been effective?
- A. Laughs readily, turns from back to side.
- B. Has strong Moro and tonic neck reflexes.
- C. Keeps fists clenched, opens hands when grasping an object.
- D. Can lift head, but not chest when lying on abdomen.
Correct answer: A
Rationale: In infants, laughing readily and turning from back to side are indicative of normal development. These behaviors indicate that the thyroid therapy is effective, as they suggest the baby is achieving age-appropriate milestones. A 5-month-old infant should be able to laugh readily and turn from back to side, showing progress in motor and social development. Choices B, C, and D describe behaviors that are not specific to the expected developmental milestones of a 5-month-old. Strong Moro and tonic neck reflexes, clenched fists, and limited ability to lift the chest when lying on the abdomen are not necessarily indicative of the effectiveness of thyroid therapy for hypothyroidism.
5. 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.
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