a nurse is caring for a 6 year old child who has a new prescription for cefoxitin 80 mgkgday administered intravenously every 6 hours the child weighs
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Nursing Elites

HESI LPN

HESI Fundamentals 2023 Test Bank

1. 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?

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.

2. A nurse is preparing to check a client's blood pressure. Which of the following actions should the nurse take?

Correct answer: A

Rationale: The correct action when checking a client's blood pressure is to apply the cuff above the client's antecubital fossa. Placing the cuff above this area allows for an accurate measurement of blood pressure. Choice B is incorrect because the cuff width should be approximately 40% of the arm circumference, not 60%. Choice C is incorrect as the client's arm should rest at heart level, not above it, to ensure an accurate reading. Choice D is incorrect as the pressure on the client's arm should be released at a rate of 2 to 3 mm per second, not 5 to 6 mm per second.

3. What is the rate of delivery in mL/hr if a total volume of 750 mL is infused over a period of 7 hours?

Correct answer: A

Rationale: The correct rate of delivery is 107 mL/hr. To find the rate of delivery, divide the total volume by the total time: 750 mL / 7 hours = 107 mL/hr. Choice B, C, and D are incorrect as they do not match the correct calculation based on the total volume and time provided.

4. A client with diabetes mellitus is admitted with a blood glucose level of 600 mg/dL. What is the priority nursing action for the LPN/LVN?

Correct answer: A

Rationale: The correct answer is to administer insulin as prescribed. When a client with diabetes mellitus presents with a critically high blood glucose level like 600 mg/dL, the priority action is to lower the blood glucose level promptly to prevent complications. Insulin is the appropriate medication to rapidly reduce high blood glucose levels. Administering oral hypoglycemic agents may not act quickly enough in this critical situation. While monitoring blood glucose levels frequently is important, immediate intervention to lower the high blood glucose level takes precedence. Providing a high-calorie diet is contraindicated in this scenario as it would further elevate the blood glucose level.

5. A client is being taught how to self-administer daily low-dose heparin injections. Which of the following factors is most likely to increase the client’s motivation to learn?

Correct answer: A

Rationale: The client's belief that his needs will be met through education is the most likely factor to increase motivation to learn. When individuals perceive that their educational efforts will directly benefit them, they are more motivated to engage in the learning process. Empathy from the nurse, seeking family approval, or the nurse explaining the need for education may not be as directly tied to the client's personal benefit and may not necessarily increase motivation to learn.

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