what is the function of the epiglottis during swallowing
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Nursing Elites

HESI LPN

HESI PN Exit Exam

1. What is the function of the epiglottis during swallowing?

Correct answer: A

Rationale: The epiglottis is a flap of tissue that closes over the trachea during swallowing to prevent food and liquids from entering the airway. Choice A is correct because the primary function of the epiglottis is to act as a lid over the trachea, ensuring that food goes down the esophagus and not into the windpipe. Choices B, C, and D are incorrect as they do not describe the specific role of the epiglottis during swallowing.

2. 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.

3. The HCP gives a pregnant woman a prescription for one prenatal vitamin with iron daily and tells her that she needs to increase foods in her diet because her hemoglobin is 8.2 grams/dL. When a list of iron-rich foods is given to the client, she tells the PN that she is a vegetarian and does not eat anything that "bleeds." Which instruction should the PN provide?

Correct answer: A

Rationale: Vegetarians can increase their iron intake through plant-based sources such as green leafy vegetables, oatmeal, and legumes, which are rich in iron.

4. After a hip replacement surgery, a client is instructed to use an abduction pillow while in bed. What is the primary purpose of this device?

Correct answer: B

Rationale: The primary purpose of using an abduction pillow after hip replacement surgery is to prevent hip dislocation. The abduction pillow keeps the legs separated, which reduces the risk of hip dislocation by preventing excessive internal rotation and adduction of the hip joint. Choices A, C, and D are incorrect as the main goal of using the abduction pillow is to maintain proper positioning and stability of the hip joint to prevent dislocation, rather than addressing blood clots, circulation, or pain relief.

5. What is the primary cause of diabetic ketoacidosis (DKA)?

Correct answer: A

Rationale: The correct answer is A: Insulin deficiency. Diabetic ketoacidosis occurs due to a severe lack of insulin, causing the body to break down fat for energy, leading to the production of ketones and acidification of the blood. Option B, Overhydration, is incorrect as DKA is characterized by dehydration rather than overhydration. Option C, Excess carbohydrate intake, is incorrect because while high blood sugar levels can contribute to DKA, the primary cause is insulin deficiency. Option D, Excess insulin, is also incorrect as DKA is not caused by an excess of insulin but rather by a lack of it.

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