A nurse is preparing to administer diphenhydramine 1.25 mg/kg IM to a child who weighs 68 lb. Available is diphenhydramine injection 50 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.)
The Correct Answer is ["0.8"]
First, the child's weight needs to be converted from pounds to kilograms. There are approximately 2.2 pounds in 1 kilogram.
68 lb ÷ 2.2 = 30.9 kg
Next, the dose of diphenhydramine in mg can be calculated by multiplying the child's weight in kg by the dose in mg/kg.
1.25 mg/kg × 30.9 kg = 38.6 mg
Finally, to calculate the number of mL the nurse should administer, you need to divide the dose of diphenhydramine in mg by the concentration of the diphenhydramine injection in mg/mL.
38.6 mg ÷ 50 mg/mL = 0.8 mL
So, the nurse should administer 0.8 mL of diphenhydramine injection.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["0.5"]
Explanation
To calculate the number of tablets to be administered, the nurse should divide the prescribed dose (20 mg) by the strength of the available medication (40 mg/tablet): 20 mg / 40 mg/tablet = 0.5 tablets.
Correct Answer is ["0.5"]
Explanation
To calculate the required teaspoons (tsp) of amoxicillin suspension per dose, we need to use the following
formula:
tsp = (dose in mg) ÷ (concentration in mg/mL) ÷ 5 mL per tsp Substituting the given values in the formula, we get:
tsp = (100 mg) ÷ (200 mg/5 mL) ÷ 5 mL per tsp
tsp = 0.5 tsp
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