HESI LPN
HESI PN Exit Exam 2024
1. What is the most common genetic cause of intellectual disability?
- A. Down syndrome
- B. Fragile X syndrome
- C. Prader-Willi syndrome
- D. Turner syndrome
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. Which of the following is a common side effect of opioid analgesics that the nurse should monitor for in patients?
- A. Diarrhea
- B. Hypertension
- C. Constipation
- D. Bradycardia
Correct answer: C
Rationale: Constipation is a common side effect of opioid analgesics due to the slowing of gastrointestinal motility. Opioids bind to receptors in the gastrointestinal tract, leading to decreased peristalsis and increased water absorption, resulting in constipation. Monitoring for constipation is crucial to prevent discomfort or complications like bowel obstruction. Diarrhea (Choice A) is not a common side effect of opioid analgesics. Hypertension (Choice B) and Bradycardia (Choice D) are not typically associated with opioid use.
3. What is the function of the enzyme lactase in the digestive system?
- A. Breaks down lactose into glucose and galactose
- B. Breaks down proteins into amino acids
- C. Converts starch into maltose
- D. Breaks down fats into fatty acids
Correct answer: A
Rationale: The correct answer is A: 'Breaks down lactose into glucose and galactose.' Lactase is an enzyme in the small intestine that specifically breaks down lactose, the sugar found in milk, into glucose and galactose for absorption. Choice B is incorrect because proteins are broken down into amino acids by protease enzymes. Choice C is incorrect because the enzyme amylase converts starch into maltose. Choice D is incorrect as lipase enzymes break down fats into fatty acids.
4. In which stage of Maslow's hierarchy of needs is a young adult attempting to achieve when deciding to change his work hours to devote more time to his community?
- A. Self-Actualization
- B. Intimacy vs. Isolation
- C. Altruism
- D. Purposefulness
Correct answer: A
Rationale: The correct answer is A: Self-Actualization. The young adult is striving for self-actualization, the highest level in Maslow's hierarchy of needs. Self-actualization is characterized by individuals seeking personal growth, self-fulfillment, and the ability to contribute to society. Choice B, Intimacy vs. Isolation, focuses on relationships and occurs at a different stage. Choice C, Altruism, although related to community contribution, does not specifically address personal growth and fulfillment as in self-actualization. Choice D, Purposefulness, is not a stage in Maslow's hierarchy of needs and is not directly relevant to the scenario described.
5. When caring for a patient with a chest tube, which nursing action is most important?
- A. Clamping the chest tube every 2 hours to prevent air leaks
- B. Keeping the drainage system below chest level
- C. Emptying the drainage system every hour to prevent backflow
- D. Removing the chest tube when drainage decreases significantly
Correct answer: B
Rationale: The most crucial nursing action when caring for a patient with a chest tube is to keep the drainage system below chest level (choice B). This position helps ensure proper drainage and prevents backflow of fluid or air into the pleural space, promoting optimal functioning of the chest tube. Clamping the chest tube every 2 hours (choice A) is incorrect as it can obstruct the drainage system and lead to complications. Emptying the drainage system every hour (choice C) is unnecessary unless there are specific clinical indications. Removing the chest tube when drainage decreases significantly (choice D) is also incorrect as the decision should be based on overall clinical assessment rather than drainage amount alone.
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