what is the most common genetic cause of intellectual disability
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HESI LPN

HESI PN Exit Exam 2024

1. What is the most common genetic cause of intellectual disability?

Correct answer: B

Rationale: The correct answer is Fragile X syndrome because it is the most common inherited cause of intellectual disability, resulting from a mutation in the FMR1 gene. Down syndrome, Prader-Willi syndrome, and Turner syndrome are not the most common genetic causes of intellectual disability. Down syndrome is caused by the presence of an extra chromosome 21, Prader-Willi syndrome results from specific genetic abnormalities on chromosome 15, and Turner syndrome is characterized by the absence of part or all of one of the X chromosomes.

2. An older postoperative client has the nursing diagnosis 'impaired mobility related to fear of falling.' Which desired outcome best directs the PN's actions for the client?

Correct answer: C

Rationale: The correct answer is C. Using self-affirmation statements helps the client reduce fear and regain confidence in mobility, which is essential for improving impaired mobility. Choice A focuses more on the frequency of ambulation rather than addressing the fear of falling. Choice B involves the physical therapist and the use of a walker, which may not directly address the client's fear. Choice D is a safety measure but does not specifically target the client's fear of falling.

3. Before administering an antibiotic that can cause nephrotoxicity, which lab value is most important for the nurse to review?

Correct answer: C

Rationale: The correct answer is C: Serum Creatinine. Serum creatinine is a key indicator of kidney function. Reviewing this value is crucial as it helps assess the client's risk for nephrotoxicity before administering the antibiotic. Elevated serum creatinine levels can indicate impaired kidney function, which would increase the risk of nephrotoxicity. Choices A, B, and D are not as directly related to kidney function and nephrotoxicity. Hemoglobin and hematocrit levels assess for anemia, serum calcium levels monitor calcium balance, and WBC count evaluates for infections. While these values are important for overall patient assessment, they are not as specific to assessing nephrotoxicity risk as serum creatinine.

4. A full-term, 24-hour-old infant in the nursery regurgitates and suddenly turns cyanotic. Which immediate intervention should the PN implement?

Correct answer: C

Rationale: Suctioning the oral and nasal passages is the correct immediate intervention in this scenario. Regurgitation leading to cyanosis indicates a potential airway obstruction, which requires prompt action to clear. Stimulating the infant to cry (Choice A) may not address the underlying issue of airway obstruction. Giving oxygen by positive pressure (Choice B) can be beneficial, but clearing the airway obstruction takes precedence. Turning the infant onto the right side (Choice D) does not directly address the need to clear the airway.

5. The nurse assigns a UAP to assist with the personal care of a client experiencing an acute exacerbation of multiple sclerosis. Which instruction should the nurse provide the UAP?

Correct answer: B

Rationale: The correct instruction for the UAP to provide when assisting a client experiencing an acute exacerbation of multiple sclerosis is to encourage self-care but allow rest periods. Clients with multiple sclerosis often experience fatigue, so promoting self-care activities while ensuring they have adequate rest periods is crucial for symptom management and maintaining independence. Choice A is incorrect as hot baths can potentially exacerbate symptoms in clients with multiple sclerosis. Choice C is unrelated to the client's care needs during an acute exacerbation of multiple sclerosis. Choice D is not a priority instruction in this situation and may not directly impact the client's immediate care needs.

Similar Questions

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A client post-splenectomy is at risk for infection. What is the most important preventive measure the nurse should emphasize during discharge teaching?
Which of the following is an appropriate intervention for a patient experiencing a hypertensive crisis?
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