HESI LPN
CAT Exam Practice Test
1. The nurse is teaching a class on child care to new parents. Which instruction should be included about the prevention of rotavirus infection in infants who are starting to eat foods?
- A. Keep house pets away from the food preparation area
- B. Avoid feeding infants fresh fruits
- C. Use only lactose-free formulas
- D. Wash hands before any food preparation
Correct answer: D
Rationale: The correct answer is D: Wash hands before any food preparation. Rotavirus is a highly contagious virus that can be prevented by maintaining proper hygiene. Washing hands before handling food can help prevent the spread of infections, including rotavirus. Choices A, B, and C are incorrect because while they are good practices for general hygiene and infant care, they are not specifically targeted at preventing rotavirus infection.
2. 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.
3. The healthcare provider prescribes lidocaine (Lidoject-1) 100 mg IV push for ventricular tachycardia for an unconscious client. What is the nurse's priority intervention?
- A. Measure the client's cardiac output
- B. Assess neurological status q15 min
- C. Collect a blood specimen for serum potassium
- D. Infuse lidocaine (Lidoject-1) at 20 to 50 mg/min
Correct answer: B
Rationale: The priority intervention for the nurse is to assess the client's neurological status q15 min. This is crucial to monitor for potential side effects of lidocaine, especially its neurotoxic effects. While measuring the client's cardiac output and collecting a blood specimen for serum potassium are important assessments, assessing the neurological status is the priority when administering lidocaine. Infusing lidocaine at a specific rate should follow the initial assessment of the client's neurological status to ensure safety.
4. The charge nurse is making assignments for clients on an endocrine unit. Which client is best to assign to a new graduate nurse?
- A. A female adult with hyperthyroidism who is returning to the unit after a thyroidectomy
- B. A male adult with Cushing's syndrome who reports a headache and visual disturbances
- C. An older man with Addison's disease who is diaphoretic and has hand tremors
- D. A perimenopausal woman with Graves' disease who is nervous and has exophthalmos
Correct answer: A
Rationale: A new graduate nurse can manage the care of a stable client returning from a thyroidectomy. Choice B is not suitable for a new graduate nurse as it involves complex symptoms of Cushing's syndrome that require more experience and knowledge. Choice C presents a client with acute manifestations of Addison's disease, which may be challenging for a new graduate nurse. Choice D involves a client with Graves' disease experiencing nervousness and exophthalmos, which also require a higher level of expertise to manage effectively.
5. To prevent aspiration in a client on mechanical ventilation receiving continuous enteral feedings through a nasogastric tube, which intervention is most important for the nurse to implement?
- A. Verify the feeding tube position with a daily chest x-ray
- B. Maintain head of bed elevated while enteral feeding is infusing
- C. Check feeding tube placement with air bolus prior to use
- D. Aspirate stomach contents every 4 hours to assess residuals
Correct answer: B
Rationale: The most important intervention to prevent aspiration in a client receiving continuous enteral feedings through a nasogastric tube while on mechanical ventilation is to maintain the head of the bed elevated while the feeding is infusing. This position helps reduce the risk of regurgitation and aspiration. Options A, C, and D are not as crucial as maintaining proper positioning to prevent aspiration. Verifying tube position with a daily chest x-ray is important but not the most crucial. Checking tube placement with an air bolus and aspirating stomach contents are important procedures but do not directly address the prevention of aspiration during enteral feedings.
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