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 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. A post-operative client is recovering from a total knee replacement and is prescribed patient-controlled analgesia (PCA). What is the primary advantage of PCA for managing post-operative pain?

Correct answer: A

Rationale: The primary advantage of PCA for managing post-operative pain is that it allows the client to control the administration of pain medication, leading to consistent pain control without overmedication. Choice B is incorrect as PCA does not eliminate the need for oral pain medication; it supplements it. Choice C is incorrect because while PCA can help reduce opioid consumption, it does not directly reduce the risk of opioid addiction. Choice D is incorrect as PCA actually requires close monitoring by nursing staff to ensure proper use and prevent complications.

3. A client reports being able to swallow only small bites of solid food and liquids for the last 3 months. The PN should assess the client for what additional information?

Correct answer: C

Rationale: The correct answer is C: History of alcohol or tobacco use. A history of alcohol or tobacco use is significant as both are risk factors for esophageal cancer or other esophageal disorders that could cause difficulty swallowing (dysphagia). This information helps in evaluating the underlying cause of the symptom. Choices A, B, and D are less relevant in this context. While a past traumatic injury to the neck could potentially cause swallowing difficulties, given the chronic nature of the symptom in this case, it is more important to focus on potential risk factors associated with esophageal disorders like alcohol and tobacco use. Daily consumption of hot beverages and daily dietary intake of roughage are less likely to be directly related to the client's current swallowing issue.

4. A client with a recent total knee replacement is scheduled for physical therapy. The client refuses to participate, stating that the pain is too intense. What should the nurse do first?

Correct answer: A

Rationale: Administering pain medication before physical therapy helps manage the pain, making it easier for the client to participate in the necessary exercises to improve recovery and prevent complications such as joint stiffness. Choice B is not the first step as addressing the pain should take precedence. Choice C is important but should come after managing the pain to facilitate participation. Choice D involves another healthcare provider and is not the immediate action needed in this situation.

5. A homeless male client with a history of alcohol abuse had a CVA 10 years ago that resulted in left hemiparesis. Today he is brought to the clinic reporting pain in his left leg. He is afebrile, has 4+ pitting edema in the lower left leg, and has minimal swelling of the right leg. Which action should the PN implement first?

Correct answer: B

Rationale: Inspecting the legs for infection or trauma is the priority to assess the cause of the pain and edema, which could indicate deep vein thrombosis or cellulitis. Checking for signs of infection or trauma is crucial in this scenario to rule out potentially serious conditions. Obtaining a blood alcohol test, completing a mental status exam, or inquiring about dietary salt intake can be considered after addressing the immediate concern of identifying any infection or trauma in the leg.

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