HESI LPN
HESI Practice Test for Fundamentals
1. The client is advised to take dexamethasone (Decadron) with food or milk. What is the physiological basis for this advice?
- A. Inhibits pepsin production
- B. Stimulates hydrochloric acid production
- C. Delays stomach emptying time
- D. Reduces hydrochloric acid production
Correct answer: B
Rationale: The correct answer is B: Stimulates hydrochloric acid production. Dexamethasone can stimulate the production of hydrochloric acid in the stomach, which may lead to irritation of the stomach lining. Taking dexamethasone with food or milk helps to neutralize or buffer the acid, reducing the risk of stomach irritation. Choice A is incorrect because dexamethasone does not inhibit pepsin production. Choice C is incorrect as dexamethasone does not slow stomach emptying time. Choice D is incorrect as dexamethasone does not reduce hydrochloric acid production.
2. A child weighing 20 kg has a new prescription for cefoxitin at 80 mg/kg/day administered intravenously every 6 hours. How much cefoxitin should be administered with each dose?
- A. 400 mg
- B. 200 mg
- C. 1600 mg
- D. 100 mg
Correct answer: A
Rationale: To determine the amount of cefoxitin to be administered with each dose, first, calculate the total daily dose by multiplying the child's weight (20 kg) by the prescribed dose (80 mg/kg/day): 80 mg/kg/day × 20 kg = 1600 mg/day. Since the medication is administered every 6 hours (4 doses/day), divide the total daily dose by the number of doses: 1600 mg / 4 = 400 mg. Therefore, each dose should be 400 mg. Choice B (200 mg) is incorrect because it is half the calculated dose. Choice C (1600 mg) is incorrect as it represents the total daily dose, not the dose per administration. Choice D (100 mg) is incorrect as it is a quarter of the calculated dose.
3. A client is demonstrating postoperative deep breathing and coughing exercises to a client who will have emergency surgery for appendicitis. Which of the following statements indicates a lack of readiness to learn by the client?
- A. The client reports severe pain
- B. The client asks for a demonstration
- C. The client inquires about potential complications
- D. The client agrees to the procedure
Correct answer: A
Rationale: The correct answer is A because severe pain can hinder the client's ability to participate effectively in learning. Pain can be distracting and may prevent the client from focusing on acquiring new information or skills. Choice B is incorrect because asking for a demonstration shows an interest in learning and readiness to understand the exercises. Choice C is incorrect as inquiring about potential complications indicates the client's engagement in understanding the procedure and its outcomes, demonstrating readiness to learn. Choice D is incorrect as agreeing to the procedure does not necessarily reflect a lack of readiness to learn. The client may still be open to receiving information about postoperative care, indicating a level of readiness to learn despite agreeing to the surgery.
4. A nurse manager is preparing to review medication documentation with a group of newly licensed nurses. Which of the following statements should the nurse manager plan to include in the teaching?
- A. Use the complete name of the medication magnesium sulfate.
- B. Delete the space between the numerical dose and the unit of measure.
- C. Write the letter U when noting the dosage of insulin.
- D. Use the abbreviation SC when indicating an injection.
Correct answer: A
Rationale: The correct answer is to use the complete name of the medication magnesium sulfate. This is important to prevent confusion with morphine sulfate, which is abbreviated as MSO4. Choice B is incorrect as it is essential to maintain a space between the numerical dose and the unit of measure for clarity in medication documentation. Choice C is incorrect as the standard abbreviation for units is 'U' for international units, not for the dosage of insulin. Choice D is incorrect as the appropriate abbreviation for subcutaneous injection is 'SC,' not just 'SC.' Therefore, the nurse manager should emphasize using the full name of medications to avoid errors and ensure patient safety.
5. When replacing a client's surgical dressing, what should the nurse do?
- A. Don sterile gloves to remove the old dressing
- B. Wash hands thoroughly before removing the old dressing
- C. Use sterile gloves to remove the old dressing
- D. Apply a new dressing before removing the old one
Correct answer: C
Rationale: When replacing a client's surgical dressing, the nurse should use sterile gloves to remove the old dressing. Sterile technique is essential to prevent introducing infection to the wound. Choice A is incorrect because clean gloves are not sufficient; sterile gloves are necessary to maintain asepsis. Choice B, washing hands, is an important step before and after the procedure to maintain hand hygiene, but sterile gloves are required during the dressing change. Choice D is incorrect because a new dressing should only be applied after the old one has been removed to prevent contamination and ensure proper wound care.
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