which disorder is characterized by demyelination of neurons in the central nervous system
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HESI PN Exit Exam 2023

1. Which disorder is characterized by demyelination of neurons in the central nervous system?

Correct answer: A

Rationale: Multiple sclerosis is the correct answer. It is an autoimmune disease that specifically targets and damages the myelin sheath surrounding neurons in the central nervous system. This demyelination disrupts the transmission of nerve signals and leads to a variety of neurological symptoms. Parkinson's disease (Choice B), Alzheimer's disease (Choice C), and Huntington's disease (Choice D) are neurodegenerative disorders that do not primarily involve demyelination of neurons in the CNS. Parkinson's disease is characterized by the loss of dopamine-producing neurons, Alzheimer's disease by the formation of plaques and tangles in the brain, and Huntington's disease by a genetic mutation affecting nerve cells.

2. Which action should the PN implement when using standard precautions to provide client care?

Correct answer: B

Rationale: The correct answer is B. When using standard precautions, healthcare providers should wear clean exam gloves to perform perineal catheter care. This approach helps prevent the transmission of pathogens and ensures the safety of both the client and the healthcare provider. Choice A is incorrect because applying sterile gloves for a finger stick blood sample is unnecessary when non-sterile gloves would suffice. Choice C is incorrect because replacing the needle cap after giving an intramuscular injection is not directly related to standard precautions. Choice D is incorrect because wearing a paper gown is not a standard precaution for preventing the transmission of droplet pathogens.

3. Which of the following areas does the Patient’s Bill of Rights cover?

Correct answer: D

Rationale: The Patient’s Bill of Rights encompasses various areas to protect patients' rights. These include ensuring information disclosure, allowing patients to choose their healthcare providers, and giving them options to select plans that suit their needs. Therefore, all the choices - information disclosure, choice of providers, and choice of plans - are covered under the Patient’s Bill of Rights. The option 'Best payment options' is not relevant to the areas typically addressed by the Patient’s Bill of Rights.

4. The PN is caring for an older client who was informed about the diagnosis of terminal cancer two days ago. Which intervention would be most helpful for the client's spouse at this time?

Correct answer: D

Rationale: Providing information about palliative and hospice care services can help the spouse understand the options for managing the client's symptoms and improving the quality of life. This also provides support and guidance during a difficult time. Consulting with the case manager and hospital chaplain may be beneficial for emotional support but may not address the practical aspects of care. Visiting after procedures are done to avoid seeing the client in pain may not foster open communication and support. While participating in the client's care is important, providing information about palliative and hospice care services is the most helpful intervention in this scenario.

5. A client post-thyroidectomy is being monitored for signs of hypocalcemia. Which of the following symptoms should the nurse be most concerned about?

Correct answer: A

Rationale: The correct answer is A: Tingling in the hands and around the mouth. This symptom is a classic sign of hypocalcemia, which can occur after thyroidectomy if the parathyroid glands were inadvertently damaged during surgery. Nausea and vomiting (Choice B) are not specific to hypocalcemia. Constipation (Choice C) is not a typical symptom of hypocalcemia. Bradycardia (Choice D) is more commonly associated with hypothyroidism rather than hypocalcemia.

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