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. What is an essential nursing action before administering a blood transfusion?

Correct answer: B

Rationale: Verifying the blood type and patient identity with another nurse is crucial before administering a blood transfusion. This step helps prevent transfusion reactions and ensures that the correct blood is given to the right patient. Checking the patient’s blood pressure, although important, is not directly related to verifying blood type and patient identity. Flushing the IV line with saline is a good practice but is not as critical as confirming the blood type and patient identity. Administering pre-transfusion medications would come after verifying the blood type and patient identity.

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. What is the primary reason for applying sequential compression devices (SCDs) to a patient’s legs postoperatively?

Correct answer: A

Rationale: The correct answer is A: To prevent deep vein thrombosis (DVT). Sequential compression devices (SCDs) are used postoperatively to prevent DVT by promoting blood circulation in the legs. This helps reduce the risk of blood clots forming in the deep veins of the legs. Choice B, to promote wound healing, is incorrect as SCDs are primarily used for circulatory purposes rather than wound healing. Choice C, to reduce postoperative pain, is incorrect as the primary purpose of SCDs is not pain management but rather prevention of DVT. Choice D, to maintain body temperature, is incorrect as SCDs are not designed for regulating body temperature but for preventing circulatory issues.

5. The PN identifies an electrolyte imbalance, exhibited by changes in mental status, and an elevated blood pressure for a client with progressive heart disease. Which intervention should the PN implement first?

Correct answer: B

Rationale: Evaluating for muscle cramping, which is a sign of electrolyte imbalance, is crucial in this scenario. Electrolyte imbalances, especially involving potassium or calcium, can lead to serious complications such as arrhythmias or seizures, which need immediate attention. Recording eating patterns (choice A) may be important for overall assessment but is not the priority in this situation. Documenting abdominal girth (choice C) and elevating legs on pillows (choice D) are not directly related to addressing the immediate concern of electrolyte imbalance and its potential complications.

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