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. A 16-year-old male client who has been treated in the past for a seizure disorder is admitted to the hospital. Immediately after admission, he begins to have a grand mal seizure. Which action should the nurse take?
- A. Obtain assistance in holding him to prevent injury.
- B. Observe him carefully.
- C. Call a CODE.
- D. Place a padded tongue blade between the teeth.
Correct answer: B
Rationale: During a grand mal seizure, the priority action for the nurse is to ensure the safety of the client. Observing the client carefully allows the nurse to monitor the seizure activity, the client's breathing, and any signs of distress without interfering with the seizure process. Restraining the client or placing objects in the mouth can lead to injury and should be avoided. Calling a CODE is not appropriate for a seizure as it is a normal response to the client's condition.
3. When assessing a child with suspected meningitis, which finding is a characteristic sign of meningitis?
- A. High-pitched cry
- B. Tachycardia
- C. Photophobia
- D. Hypotension
Correct answer: C
Rationale: Photophobia, which is sensitivity to light, is a characteristic sign of meningitis in children. It commonly presents along with symptoms such as headache and neck stiffness. This symptom is important to recognize early for prompt diagnosis and treatment of meningitis.
4. What information should the nurse provide the parents of a 3-year-old boy with Duchenne muscular dystrophy (DMD) who are concerned about having more children?
- A. This is an inherited X-linked recessive disorder, which primarily affects male children in the family.
- B. The male infant had a viral infection that went unnoticed and untreated, leading to muscle damage.
- C. The mother's lack of the protein dystrophin can impact the XXXX muscle groups in males.
- D. Birth trauma during a breech vaginal birth can damage the spinal cord, resulting in muscle weakness.
Correct answer: A
Rationale: The correct answer is A. Duchenne muscular dystrophy is an inherited X-linked recessive disorder that primarily affects male children in the family. Since it is X-linked, sons inherit the mutation from their mothers who are carriers of the abnormal gene. Therefore, the nurse should explain to the parents that any future sons they have would have a 50% chance of inheriting the mutation and having DMD, while daughters would have a 50% chance of being carriers like the mother.
5. The nurse is preparing to administer an immunization to a 5-year-old child. The parent asks if the vaccine can be given in a different way because the child is afraid of needles. What is the nurse’s best response?
- A. We can apply a numbing cream before the injection
- B. There is no other way to administer this vaccine
- C. We can give the vaccine as a nasal spray
- D. We can skip the vaccine if the child is too afraid
Correct answer: C
Rationale: Administering the vaccine as a nasal spray provides an alternative method of delivery that avoids the use of needles, addressing the child's fear while ensuring immunization. Nasal sprays are effective for certain vaccines and can be a suitable option in this scenario. Choice A is not the best response as it only addresses pain management but does not eliminate the use of needles. Choice B is incorrect as there are alternative delivery methods like nasal sprays. Choice D is incorrect as skipping the vaccine would leave the child unprotected and is not a recommended course of action.
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