A nurse is preparing to administer cephalexin 25 mg/kg/day PO divided in equal doses every 6 hr to a toddler who weighs 26 lb. Available is cephalexin suspension 250 mg/5 mL. How many mL should the nurse administer per dose? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)

Answer and Explanation

The Correct Answer is ["1.5"]

To calculate the dosage of cephalexin for the toddler, first convert the weight from pounds to kilograms, knowing that 1 kilogram equals 2.2 pounds. The toddler weighs 26 lb, which is approximately 11.82 kg (26 / 2.2 = 11.82). Next, calculate the daily dose in milligrams using the prescribed dose of 25 mg/kg/day: 11.82 kg * 25 mg/kg/day = 295.5 mg/day. Since the medication is to be divided into equal doses every 6 hours, there will be four doses per day. Therefore, the dose per administration is 295.5 mg/day divided by 4, which equals 73.875 mg/dose. Now, using the concentration of the cephalexin suspension (250 mg/5 mL), calculate the volume of suspension needed per dose: 73.875 mg * (5 mL / 250 mg) = 1.4775 mL. Rounded to the nearest tenth, the nurse should administer 1.5 mL per dose.

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Free Nursing Study Resources

Correct Answer is ["300"]

Explanation

To calculate the infusion rate in mL/hr, you can use the formula: (Total Volume in mL) / (Time in hours) = Rate in mL/hr. For lactated Ringer's 150 mL to be infused over 30 minutes, you would first convert the time to hours, which is 0.5 hours (since 30 minutes is half an hour). Then, divide the total volume by the time: 150 mL / 0.5 hours = 300 mL/hr.

A. Give the client two troches in the morning and two troches in the evening. B. Withhold oral intake until the troche dissolves in the client's mouth. C. Tell the client to keep the troche under the tongue for 5 min before swallowing it. D. Instruct the client to swallow the troche with 240 mL. (8 oz) water.

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.

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Naxlex Comprehensive Predictor Exams

A nurse is preparing to administer lactated Ringer's 150 mL IV to infuse over 30 min. 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 ["300"]

Explanation

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 filgrastim 10 mcg/kg subcutaneous to a child who weighs 71 lb. Available is filgrastim injection 300 mcg/mL. How many mL should the nurse administer? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)

A nurse is preparing to administer furosemide 6 mg IM to a child. The amount available is furosemide 10 mg/mL. How many ml. should the nurse administer? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)

A nurse is preparing to administer enoxaparin 20 mg subcutaneously to a school-age child. The amount available is enoxaparin 30 mg/0.3 mL. How many mL should the nurse administer? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)

A nurse is administering prochlorperazine 0.13 mg/kg IM to a child who weighs 55 lb. Available is prochlorperazine injection 5 mg/mL. How many mL should the nurse administer? (Round the answer to the nearest hundredth. Use a leading zero if it applies. Do not use a trailing zero.)