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. A client is recovering from a right-sided mastectomy and is concerned about lymphedema. What should the nurse include in the discharge teaching to minimize this risk?

Correct answer: B

Rationale: The correct answer is B: Advise against lifting heavy objects with the affected arm. Lifting heavy objects with the affected arm can increase the risk of lymphedema. It is important for clients to avoid activities that strain the affected arm to minimize the risk of developing lymphedema. Choices A, C, and D are incorrect because wearing tight clothing on the affected arm, sleeping on the affected side, and frequent massage of the affected arm can potentially worsen lymphedema or impede the recovery process. Tight clothing can impede lymphatic flow, sleeping on the affected side can restrict circulation, and frequent massage can exacerbate swelling in the arm.

3. A client who is receiving chemotherapy has developed stomatitis. Which instruction should the nurse provide the UAP who is assisting with the care of this client?

Correct answer: D

Rationale: Providing gentle and meticulous mouth care is critical for a client with stomatitis as it helps prevent further irritation and infection of the mucous membranes. Keeping the room environment free of unpleasant odors (Choice A) is important for the client's comfort but not directly related to managing stomatitis. Gathering supplies for protective environmental precautions (Choice B) is not relevant to addressing stomatitis. Assisting the client with feeding at meal times (Choice C) is important for overall care but does not specifically target the care needed for stomatitis.

4. Which electrolyte imbalance is most likely to cause cardiac arrhythmias?

Correct answer: A

Rationale: Hyperkalemia is the correct answer as it can lead to dangerous cardiac arrhythmias due to its effects on the electrical conduction of the heart. High levels of potassium can disrupt the normal electrical activity of the heart, potentially leading to life-threatening arrhythmias. Hypocalcemia (choice B) is not the most likely cause of cardiac arrhythmias compared to hyperkalemia. Hypernatremia (choice C), referring to high sodium levels, is not directly associated with causing cardiac arrhythmias. While hypokalemia (choice D), low potassium levels, can also lead to cardiac arrhythmias, hyperkalemia is the more likely culprit in causing severe disturbances in heart rhythm.

5. In a group therapy setting, one member is very demanding, repeatedly interrupting others and taking most of the group time. The nurse's best response would be:

Correct answer: A

Rationale: In a group therapy setting, where each member should have the opportunity to participate, it is essential for the nurse to manage disruptive behavior assertively yet respectfully. Choice A is the best response as it addresses the issue of one member dominating the group time by asking them to summarize their point briefly, allowing others to contribute. Choice B is confrontational and may alienate the individual, hindering the therapeutic process. Choice C expresses personal frustration, which is not constructive in managing the situation. Choice D of ignoring the behavior is not effective as it allows the disruptive behavior to continue, impacting the group dynamics negatively.

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