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. What is the priority intervention for a patient experiencing an acute asthma attack?

Correct answer: A

Rationale: Administering a bronchodilator is the priority intervention in an acute asthma attack. Bronchodilators help to quickly open the airways, relieve bronchospasm, and improve breathing. Encouraging the patient to drink fluids may be beneficial for other conditions but is not the priority in an acute asthma attack. Applying a high-flow oxygen mask may be necessary in severe cases of respiratory distress but is not the initial priority when managing an acute asthma attack. Performing chest physiotherapy is not indicated as the primary intervention for an acute asthma attack and may not address the immediate need to open the airways and improve breathing.

3. A new mother who is breastfeeding her newborn for the first time after delivery reports nipple pain when the baby sucks. Based on this client problem, which action should the PN take?

Correct answer: A

Rationale: Proper latch, including all the areolar tissue in the infant's mouth, is essential to prevent nipple pain and ensure effective breastfeeding. Option A is correct because ensuring that all the areolar tissue of the nipple is in the infant's mouth helps achieve a good latch, reducing nipple pain. Option B is incorrect as repositioning the infant may not address the root cause of the pain related to latch issues. Option C is incorrect because while checking for engorgement and nipple issues is important, it does not directly address the latch concern causing the pain. Option D is incorrect as applying a warm compress is not recommended for breastfeeding mothers; a warm compress can help with pain associated with engorgement, but it does not address latch issues.

4. When administering parenteral iron, which action would be inconsistent with proper administration?

Correct answer: D

Rationale: The correct answer is D: Using the deltoid muscle for administration. Administering parenteral iron in the deltoid muscle is not recommended due to the risk of irritation and pain. The Z-track method (choice A) is preferred to prevent staining and irritation of the skin when administering irritating medications like iron. Using an air bubble (choice B) to avoid withdrawing medication into subcutaneous tissue is a common practice to ensure accurate administration. Not massaging the injection site (choice C) is also a standard practice to prevent potential irritation or bleeding at the injection site.

5. A registered nurse is preparing to hang the first bag of total parenteral nutrition (TPN) solution. The client has a central line, and this is the first bag he will receive. Which of the following is the most essential piece of equipment to obtain prior to hanging the bag?

Correct answer: C

Rationale: An electronic infusion pump is essential for administering TPN to ensure accurate delivery and avoid complications such as fluid overload or improper nutrient delivery. The pump helps regulate the flow rate precisely, which is crucial when infusing TPN. Monitoring the client's blood glucose is important but not immediately necessary before hanging the TPN bag. A noninvasive blood pressure monitor is not directly related to administering TPN and is not the most essential equipment needed for this procedure. Urine test strips are not required for administering TPN via a central line and are not essential equipment for this specific task.

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