which disorder is characterized by demyelination of neurons in the central nervous system
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HESI LPN

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. What is the first action a healthcare professional should take when a patient’s nasogastric (NG) tube becomes clogged?

Correct answer: C

Rationale: When a patient's nasogastric (NG) tube becomes clogged, the first action to take is to attempt to aspirate the clog with a syringe. This is a standard and initial step to clear the blockage in the tube. Flushing the tube with water (Choice A) may not address the specific clog; repositioning the patient (Choice B) is not directly related to clearing the tube. Administering a medication to dissolve the clog (Choice D) should only be considered after simpler methods like aspiration have been attempted.

3. A Native American client is admitted with a diagnosis of psychosis not otherwise specified. The client's family seems to regard the client's hallucinations as normal. What assessment can be made?

Correct answer: A

Rationale: Choice A is correct because the family may interpret the client's hallucinations through their cultural lens, potentially viewing them as normal or spiritually significant. Understanding and acknowledging the cultural context is essential for providing culturally sensitive care. Choices B, C, and D are incorrect because while talking circles and seeking guidance from a medicine man may be culturally relevant interventions in some contexts, the priority in this situation is to recognize and respect the family's perspective on the client's hallucinations.

4. After administering pantoprazole to a client with gastroesophageal reflux disease (GERD), which statement by the client indicates to the nurse that the medication is producing the desired effect?

Correct answer: A

Rationale: The correct answer is A. Pantoprazole reduces stomach acid production, thus preventing the occurrence of heartburn after meals, which is a common symptom of GERD. Choice B is incorrect because an increased appetite and hunger are not indicators of the desired effect of pantoprazole. Choice C is unrelated to the medication's effect on GERD symptoms. Choice D is also incorrect because the absence of difficulty swallowing is not a specific indicator of pantoprazole's effectiveness in treating GERD.

5. The PN determines that a client with cirrhosis is experiencing peripheral neuropathy. What action should the PN take?

Correct answer: A

Rationale: Protecting the client's feet from injury is the most appropriate action for a client with cirrhosis experiencing peripheral neuropathy. Peripheral neuropathy can lead to a loss of sensation, making the client prone to unnoticed injuries. Applying a heating pad (Choice B) is contraindicated as it may cause burns or further damage to the affected area. Keeping the client's feet elevated (Choice C) is not directly related to managing peripheral neuropathy and may not provide significant benefit. Assessing the feet and legs for jaundice (Choice D) is important for monitoring liver function in clients with cirrhosis, but in this case, the priority is to prevent injury to the feet due to decreased sensation.

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