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 client is admitted to the intensive care unit with diabetes insipidus due to a pituitary gland tumor. Which potential complication should the nurse monitor closely?
- A. Hypokalemia
- B. Ketonuria
- C. Peripheral edema
- D. Elevated blood pressure
Correct answer: A
Rationale: The correct answer is A: Hypokalemia. In diabetes insipidus, there is excessive urination leading to fluid loss, which can result in electrolyte imbalances such as hypokalemia. Monitoring potassium levels is crucial to prevent complications like cardiac arrhythmias. Choices B, C, and D are incorrect. Ketonuria is typically seen in diabetic ketoacidosis, peripheral edema is more commonly associated with conditions like heart failure or kidney disease, and elevated blood pressure is not a direct complication of diabetes insipidus related to a pituitary gland tumor.
3. A male client with schizophrenia is jerking his neck and smacking his lips. Which finding indicates to the nurse that he is experiencing an irreversible side effect of antipsychotic agents?
- A. Cramping muscular pain
- B. Worming movements of the tongue
- C. Decreased tendon reflexes
- D. Dry oral mucous membranes
Correct answer: B
Rationale: The correct answer is B: Worming movements of the tongue. Worming movements of the tongue, known as tardive dyskinesia, are an irreversible side effect of antipsychotic medications. Tardive dyskinesia is characterized by involuntary, repetitive movements of the tongue, lips, face, trunk, and extremities. Cramping muscular pain (Choice A) is more indicative of dystonia, an extrapyramidal side effect that can be treated effectively with antiparkinsonian medications. Decreased tendon reflexes (Choice C) are not typically associated with irreversible side effects of antipsychotic agents. Dry oral mucous membranes (Choice D) are not specific to irreversible side effects of antipsychotic medications.
4. After a motor vehicle collision, a client is admitted to the medical unit with acute adrenal insufficiency (Addisonian crisis). Which prescription should the nurse implement?
- A. Determine serum glucose levels
- B. Withhold potassium additives to IV fluids
- C. Give IV corticosteroid replacement
- D. Prepare to initiate IV vasopressors
Correct answer: C
Rationale: In a client with acute adrenal insufficiency (Addisonian crisis) following a motor vehicle collision, the priority intervention is to administer IV corticosteroid replacement. This is crucial to manage the crisis by replacing the deficient cortisol. Determining serum glucose levels (Choice A) may be important but is not the immediate priority in this situation. Withholding potassium additives to IV fluids (Choice B) is not indicated and may exacerbate electrolyte imbalances. Initiating IV vasopressors (Choice D) is not the primary treatment for acute adrenal insufficiency and should be reserved for managing hypotension that is unresponsive to corticosteroid therapy.
5. The parents of a child who had surgical repair of a myelomeningocele are being taught how to change an occlusive dressing on the child’s back. Which statement by the parents indicates that they understand this procedure?
- A. When changing the dressing, the tape should be removed slowly to prevent trauma to the skin
- B. To prevent infection, the dressing should be kept dry to avoid excess moisture
- C. The skin incision should be kept moist to promote healing and prevent dryness
- D. The incision should be protected from fecal contamination by an intact dressing
Correct answer: D
Rationale: The correct answer is D because protecting the incision from fecal contamination is essential to prevent infection and promote healing in a child with a myelomeningocele. This is crucial as fecal matter can introduce harmful bacteria to the wound. Choice A is incorrect as removing the tape slowly to prevent trauma to the skin is a general guideline but not specific to preventing infection. Choice B is incorrect because keeping the dressing dry can lead to complications as the wound needs a moist environment to heal properly. Choice C is incorrect as keeping the skin incision moist may promote infection and delay healing, making it an incorrect statement for postoperative care.
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