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 premature infant weighing 1,200 grams at birth receives a prescription for beractant (Survanta) 120 mg endotracheal now and q6 hr for 24 hr. The recommended dose for beractant is 100 mg/kg birth weight per dose. Single-use vials of Survanta are labeled 100 mg/4 ml. What action should the nurse take?
- A. Give 4.8 ml q6 hr
- B. Notify the healthcare provider that the dose is too high
- C. Notify the healthcare provider that the dose is too low
- D. Give 1.2 ml q6 hr
Correct answer: A
Rationale: The correct answer is to give 4.8 ml q6 hr. To calculate the dose, you divide the prescribed dose of 120 mg by the concentration of Survanta, which is 100 mg per 4 ml. This results in 4.8 ml per dose, as 120 mg ÷ 100 mg/4 ml = 4.8 ml. Option B suggesting to notify the healthcare provider that the dose is too high is incorrect because the calculated dose of 4.8 ml is based on the recommended dose of 100 mg/kg birth weight. Option C suggesting to notify the healthcare provider that the dose is too low is incorrect as the calculated dose is based on the correct dosage calculation. Option D suggesting to give 1.2 ml q6 hr is incorrect because it doesn't align with the correct calculation.
3. A client is admitted with the diagnosis of Wernicke’s syndrome. What assessment finding should the nurse use in planning the client’s care?
- A. Right lower abdominal pain
- B. Confusion
- C. Depression
- D. Peripheral neuropathy
Correct answer: B
Rationale: Confusion is a key symptom of Wernicke’s syndrome, which is due to thiamine deficiency. Wernicke’s syndrome is characterized by a triad of symptoms known as the classic triad, which includes confusion, ataxia, and ophthalmoplegia. Right lower abdominal pain, depression, and peripheral neuropathy are not typically associated with Wernicke’s syndrome, making them incorrect choices for this question.
4. When implementing a disaster intervention plan, which intervention should the nurse implement first?
- A. Initiate the discharge of stable clients from hospital units
- B. Identify a command center where activities are coordinated
- C. Assess community safety needs impacted by the disaster
- D. Instruct all essential off-duty personnel to report to the facility
Correct answer: B
Rationale: When implementing a disaster intervention plan, the first step the nurse should take is to identify a command center where activities are coordinated. This step is crucial for ensuring an organized and effective disaster response. Option A, initiating the discharge of stable clients, is not a priority during the initial phase of disaster response. Option C, assessing community safety needs, usually follows setting up a command center. Option D, instructing off-duty personnel to report, may be necessary but is not the primary intervention at the beginning of a disaster situation.
5. The nurse administers an oral antiviral to a client with shingles. Which finding is most important for the nurse to report to the healthcare provider?
- A. Decreased white blood cell count
- B. Pruritus and muscle aches
- C. Elevated liver function tests
- D. Vomiting and diarrhea
Correct answer: C
Rationale: The correct answer is C: Elevated liver function tests. When administering antivirals, especially orally, monitoring liver function tests is crucial as it may indicate liver toxicity. This finding should be reported promptly to the healthcare provider to prevent further complications. Choice A, decreased white blood cell count, may be expected with certain antivirals but is not the most critical finding in this scenario. Pruritus and muscle aches (choice B) are common side effects of antivirals and do not require immediate reporting. Vomiting and diarrhea (choice D) are also common side effects that may not be as concerning as elevated liver function tests.
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