A nurse is preparing to administer quinine 25 mg/kg/day PO divided in equal doses every 8 hr to a school-age child who weighs 36 lb. Available is quinine 325 mg tablets. How many tablets should the nurse administer per dose? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)

Answer and Explanation

The Correct Answer is ["0.5"]

To calculate the dosage of quinine for the child, first convert the child's weight from pounds to kilograms, knowing that 1 kilogram equals 2.2 pounds. The child weighs 36 pounds, which is approximately 16.36 kilograms (36/2.2). Next, calculate the total daily dose of quinine using the child's weight in kilograms: 25 mg/kg/day * 16.36 kg = 409 mg/day. Since the dose is divided into equal doses every 8 hours, divide the total daily dose by 3 to get the per dose amount: 409 mg/day / 3 doses/day = approximately 136.33 mg/dose. Finally, to find out how many 325 mg tablets the nurse should administer per dose, divide the per dose amount by the strength of the tablet: 136.33 mg/dose / 325 mg/tablet = approximately 0.42. Rounding to the nearest whole number, the nurse should administer half a tablet per dose.

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Correct Answer is B

Explanation

A. Give the client two troches in the morning and two troches in the evening. This option misinterprets the frequency of administration; the prescription is for four times a day, not twice.
B. Withhold oral intake until the troche dissolves in the client's mouth. Nystatin troches are designed to dissolve slowly in the mouth, allowing the medication to come into contact with the mucous membranes to treat fungal infections effectively. The client should avoid eating or drinking until the troche has fully dissolved to ensure maximum effectiveness.
C. Tell the client to keep the troche under the tongue for 5 min before swallowing it. Troches should dissolve completely in the mouth, not just be held under the tongue for a specific time.
D. Instruct the client to swallow the troche with 240 mL (8 oz) water. Troches should not be swallowed whole with water; they need to dissolve in the mouth to be effective.

Correct Answer is ["63"]

Explanation

To calculate the infusion rate for the IV pump, divide the total volume of the IV fluid by the number of hours over which it is to be infused. In this case, 500 mL divided by 8 hours results in an infusion rate of 62.5 mL/hr. When rounding to the nearest whole number and not using a trailing zero, the IV pump should be set to deliver 63 mL/hr.

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Naxlex Comprehensive Predictor Exams

A nurse is reviewing a prescription for nystatin 200,000 units in a troche PO 4 times per day. How should the nurse interpret this prescription?

Correct Answer is B

Explanation

A nurse is preparing to administer dextrose 5% in 0.45% sodium chloride 500 mL IV to infuse over 8 hr to a school-age child. The nurse should set the IV pump to deliver how many mL/hr? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)

Correct Answer is ["63"]

Explanation

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