A nurse is preparing to administer diphenhydramine 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 ["15.4"]
To calculate the correct dose of diphenhydramine, we need to follow these steps:
-
Convert pounds to kilograms:
- 68 lb * 0.4536 kg/lb = 30.8 kg
-
Calculate the total dose in milligrams:
- 25 mg/kg * 30.8 kg = 770 mg
-
Determine the volume needed from the available concentration:
- 770 mg * (1 mL / 50 mg) = 15.4 mL
Therefore, the nurse should administer 15.4 mL of diphenhydramine.
Answer: 15.4 mL
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["5.1"]
Explanation
To calculate the correct dose of methylprednisolone, we need to follow these steps:
-
Convert pounds to kilograms:
- 64 lb * 0.4536 kg/lb = 29 kg
-
Calculate the daily dose in milligrams:
- 7 mg/kg/day * 29 kg = 203 mg/day
-
Calculate the dose per administration:
- Since the medication is divided into two doses, divide the daily dose by 2:
- 203 mg/day / 2 = 101.5 mg/dose
- Since the medication is divided into two doses, divide the daily dose by 2:
-
Determine the volume needed from the available concentration:
- 101.5 mg * (1 mL / 20 mg) = 5.075 mL
Therefore, the nurse should administer 5.1 mL of methylprednisolone per dose.
Answer: 5.1 mL
Correct Answer is ["0.5"]
Explanation
To find the number of tablets,
we divide the total dosage in mg by the strength of each tablet in mg.
Let’s do the calculation:
Numberoftablets=StrengthofeachtabletinmgTotaldosageinmg=40mg/tablet20mg=0.5tablet
So, the nurse should administer 0.5 tablet of quinapril.
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