which condition is characterized by a progressive loss of muscle strength and is due to an autoimmune attack on acetylcholine receptors
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HESI LPN

HESI PN Exit Exam

1. Which condition is characterized by a progressive loss of muscle strength due to an autoimmune attack on acetylcholine receptors?

Correct answer: A

Rationale: The correct answer is A: Myasthenia gravis. Myasthenia gravis is characterized by muscle weakness caused by autoimmune attack on acetylcholine receptors at the neuromuscular junction. This results in impaired communication between nerves and muscles. Choice B, Multiple sclerosis, is a condition where the immune system attacks the protective myelin sheath covering the nerves in the central nervous system, leading to communication issues between the brain and the rest of the body. Choice C, Amyotrophic lateral sclerosis, is a progressive neurodegenerative disease affecting motor neurons in the brain and spinal cord, not involving acetylcholine receptors. Choice D, Guillain-Barré syndrome, is an acute condition where the immune system attacks the peripheral nerves, causing muscle weakness and paralysis, but it does not target acetylcholine receptors.

2. The nurse is assisting with the admission of a young adult female Korean exchange student with acute abdominal pain. Although the client has been able to easily answer questions, when asked about sexual activity, she looks away. What action should the nurse take?

Correct answer: D

Rationale: Observing the client's response to another question is the most appropriate action in this scenario. By doing so, the nurse can assess whether the client's discomfort is due to cultural sensitivity or a misunderstanding. This approach allows the nurse to proceed with sensitivity and respect, ensuring effective communication. Option A is incorrect because omitting the section of the assessment form may result in missing crucial information relevant to the client's condition. Option B jumps to assumptions about a language barrier without confirming it first. Option C focuses on rewording the question without addressing the underlying issue causing the client's discomfort, which may not necessarily be due to a lack of understanding.

3. The nurse is preparing to provide wound care for a client. Which step should be done first?

Correct answer: A

Rationale: The correct answer is to don procedural gloves first. Donning procedural gloves is essential to protect the nurse from contaminants while removing the old dressing. This step helps maintain aseptic technique and prevents the transfer of microorganisms. Removing the dressing (choice B) should follow after wearing gloves to prevent the spread of pathogens. Applying prescribed medications (choice C) should be done after the wound is cleaned and dressed. Donning a pair of sterile gloves (choice D) is not necessary for initial wound care; procedural gloves are sufficient for standard wound care.

4. 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.

5. The practical nurse is caring for a client who had a total laryngectomy, left radical neck dissection, and tracheostomy. The client is receiving nasogastric tube feedings via an enteral pump. Today the rate of feeding is increased from 50 ml/hr to 75 ml/hr. What parameter should the PN use to evaluate the client's tolerance to the rate of the feeding?

Correct answer: B

Rationale: Monitoring gastric residual volumes helps to assess how well the client is tolerating the increased feeding rate. High residuals may indicate delayed gastric emptying, which could lead to complications like aspiration. This helps in adjusting the feeding plan as necessary. Daily weight (Choice A) is not the most appropriate parameter to evaluate tolerance to feeding rate changes. Bowel sounds (Choice C) and urinary/stool output (Choice D) are important assessments but do not directly indicate tolerance to enteral feeding rate changes.

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