A nurse is reviewing a new prescription for dexamethasone 0.2 mg/kg/day PO in two divided doses for a child who weighs 66 lb. The amount available is dexamethasone 0.5 mg/5 mL elixir. How many mL 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.)
The Correct Answer is ["30"]
To calculate this, first convert the child's weight from pounds to kilograms: 66 lb * (1 kg / 2.2 lb) = 30 kg. Then, calculate the total daily dose of dexamethasone in mg: 0.2 mg/kg/day * 30 kg/day = 6 mg/day.
Since the daily dose is divided into two doses, calculate the dose per administration: 6 mg/day / 2 doses/day = 3 mg/dose.
Finally, divide the dose in mg by the concentration of the dexamethasone elixir to find the volume to administer: 3 mg / (0.5 mg/5 mL) = 30 mL/dose.
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Related Questions
Correct Answer is ["2"]
Explanation
To find out how many tablets of prednisone the nurse should administer, we need to convert the prescribed dose from grams to milligrams.
There are 1000 milligrams in 1 gram. Therefore, to convert 0.04 g to mg, we multiply 0.04 by 1000.
This gives us 40 mg. Since each tablet contains 20 mg of prednisone, the nurse should administer 40/20 = 2
tablets. The answer is rounded to the nearest whole number as instructed.
Correct Answer is ["1.1"]
Explanation
First, we need to calculate the total daily dose of methimazole for the child.
The child weighs 55 kg and the prescribed dose is 0.3 mg/kg/day, so the total daily dose is 55 kg * 0.3 mg/kg/day = 16.5 mg/day.
Since the medication is to be divided into equal doses every 8 hours, we need to divide the total daily dose by 3 to get the dose per administration: 16.5 mg/day / 3 = 5.5 mg per dose.
Finally, since each tablet contains 5 mg of methimazole, we need to divide the dose per administration by the amount of medication per tablet: 5.5 mg per dose / 5 mg per tablet = 1.1 tablets per dose.
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