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. A client is post-operative day one following an open cholecystectomy. The nurse notices the client's drainage from the T-tube is dark green. What is the most appropriate action for the nurse to take?

Correct answer: A

Rationale: Dark green drainage from a T-tube after a cholecystectomy is bile, which is an expected finding. Bile is normally dark green in color. It is important for the nurse to recognize this as a normal post-operative occurrence and document the finding. There is no need to notify the healthcare provider immediately as this finding is an anticipated part of the client's recovery. Decreasing the suction on the T-tube or flushing it with saline is unnecessary and may not be indicated based on the color of the drainage. Therefore, the most appropriate action for the nurse to take is to document the dark green drainage as a normal finding.

3. A client with a prescription for a transcutaneous electrical nerve stimulator (TENS) unit for pain management asks how it works. What information should the nurse reinforce?

Correct answer: D

Rationale: The correct answer is D. TENS works by delivering a mild electrical stimulus that can block pain signals from reaching the brain, effectively reducing the perception of pain. Choice A is incorrect because TENS does not distract from pain but rather interferes with pain signals. Choice B is incorrect as TENS does not involve infusing medication into the spinal canal. Choice C is also incorrect because TENS does not target the cerebral cortex to dull pain perception but rather works at the level of nerve conduction.

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. During a routine prenatal visit at the antepartal clinic, a multipara at 35-weeks gestation presents with 2+ edema of the ankles and feet. Which additional information should the PN report to the RN?

Correct answer: B

Rationale: Blood pressure is the most critical information to report to the RN in this scenario. The presence of edema, along with high blood pressure, can be indicative of preeclampsia, a severe condition in pregnancy. Monitoring blood pressure is essential for assessing the patient's condition and taking appropriate actions if necessary. Choices A, C, and D are not as urgent in this situation. The due date, gravida, and parity are important for overall assessment but do not address the immediate concern of potential preeclampsia. Fundal height is used to assess fetal growth and position but is not the priority when edema and high blood pressure are present.

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