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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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.

Correct Answer is ["0.6"]

Explanation

To calculate the volume of furosemide to administer, you would use the formula: Volume = Dose / Concentration. Here, the dose required is 6 mg, and the concentration available is 10 mg/mL. Dividing the required dose by the concentration gives: 6 mg / 10 mg/mL = 0.6 mL. Therefore, the nurse should administer 0.6 mL of furosemide.

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Naxlex Comprehensive Predictor Exams

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

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.)

Correct Answer is ["0.6"]

Explanation

A nurse is preparing to administer triamcinolone 40 mg IM to a child. Available is triamcinolone 80 mg/mL. What is the total mL the nurse should 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 hydrocortisone 7.5 mg PO to a child. The amount available is hydrocortisone 5 mg tablets. How many tablets 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 methylphenidate 10 mg PO. Available is methylphenidate oral solution 5 mg/tsp. How many mL should the nurse administer? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)

A nurse is preparing to administer 7.5 mL of ampicillin 250 mg oral suspension to a toddler who has otitis media. The nurse should recognize that 7.5 mL is equivalent to how many tsp? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)