HESI LPN
CAT Exam Practice
1. A 13-year-old girl, diagnosed with diabetes mellitus Type 1 at the age of 9, is admitted to the hospital in diabetic ketoacidosis. Which occurrence is the most likely cause of the ketoacidosis?
- A. Ate an extra peanut butter sandwich before gym class
- B. Incorrectly drew up and administered too much insulin
- C. Was not hungry, so she skipped eating lunch
- D. Has had a cold and ear infection for the past two days
Correct answer: B
Rationale: The correct answer is B. Incorrect insulin administration is a common cause of diabetic ketoacidosis. Administering too much insulin can lead to uncontrolled hyperglycemia, where the body starts breaking down fat for energy, resulting in the production of ketones. Choices A, C, and D are less likely to directly cause diabetic ketoacidosis. Eating an extra peanut butter sandwich, skipping lunch, or having a cold and ear infection would not directly lead to the metabolic derangements seen in diabetic ketoacidosis.
2. A child with heart failure (HF) is taking digitalis. Which sign indicates to the nurse that the child may be experiencing digitalis toxicity?
- A. Tachycardia
- B. Dyspnea
- C. Vomiting
- D. Muscle cramps
Correct answer: C
Rationale: Vomiting is a common sign of digitalis toxicity and should be closely monitored. While tachycardia is a common sign of heart failure, it is not typically associated with digitalis toxicity (Choice A). Dyspnea (Choice B) and muscle cramps (Choice D) are not specific signs of digitalis toxicity and can be present in other conditions. Therefore, the presence of vomiting should raise concerns about digitalis toxicity in the child with heart failure.
3. A 10-year-old who has terminal brain cancer asks the nurse, 'What will happen to my body when I die?' How should the nurse respond?
- A. The heart will stop beating, and you will stop breathing.
- B. You will go to sleep and not wake up.
- C. Your body will stop functioning, and you will no longer feel pain.
- D. You will feel very tired, and your body will shut down slowly.
Correct answer: C
Rationale: The correct answer is C because it provides a truthful yet sensitive response to the child's question. Saying that the body will stop functioning and that there will be no more pain helps the child understand what to expect without unnecessary details or causing distress. Choice A is too technical and may not be suitable for a child. Choice B might give the impression of a peaceful passing, which may not always be the case. Choice D introduces the concept of feeling tired, which might not be accurate or helpful in this context.
4. The nursing staff on a medical unit includes a registered nurse (RN), practical nurse (PN), and an unlicensed assistive personnel (UAP). Which task should the charge nurse assign to the RN?
- A. Transport a client who is receiving IV fluid to the radiology department
- B. Administer PRN oral analgesics to a client with a history of chronic pain
- C. Supervise a newly hired graduate nurse during an admission assessment
- D. Complete ongoing focused assessments of a client with wrist restraints
Correct answer: C
Rationale: The correct answer is C because supervising a newly hired graduate nurse during an admission assessment is a task that falls within the registered nurse's scope of practice. Registered nurses are responsible for overseeing and delegating tasks, especially to new staff, to ensure proper assessment and care delivery. Choices A, B, and D involve tasks that can be appropriately assigned to practical nurses or unlicensed assistive personnel as they are within their scope of practice. Transporting a client, administering oral analgesics, and completing focused assessments do not require the advanced knowledge and skills of a registered nurse.
5. Where should the nurse choose as the best location to begin a screening program for hypothyroidism?
- A. A business and professional women's group.
- B. An African-American senior citizens center.
- C. A daycare center in a Hispanic neighborhood.
- D. An after-school center for Native-American teens.
Correct answer: B
Rationale: The best location for beginning a screening program for hypothyroidism would be an African-American senior citizens center. This choice is the most suitable as hypothyroidism is more prevalent among older adults, and African-American seniors are at a higher risk for this condition due to various factors like genetics and lifestyle. Choices A, C, and D are less appropriate because hypothyroidism is not specifically linked to business and professional women, Hispanic children, or Native-American teens. Targeting the high-risk group, which in this case, are African-American seniors, increases the chances of successful screening and early detection.
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