A nurse is preparing to administer promethazine 15 mg IM to a child. The amount available is promethazine 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 ["0.3"]
Step by step calculation:
The desired dose of promethazine is 15 mg.
The available concentration is 50 mg/mL.
Calculating the volume to administer:
Use the concentration of the medication: 15 mg ÷ 50 mg/mL = 0.3 mL
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Related Questions
Correct Answer is ["3.9"]
Explanation
Let's break down the calculation step by step:
Understanding the information:
The child's weight is 26 lb.
The medication dosage is 2 mg/kg/day.
The available medication concentration is 15 mg/5 mL.
The medication is to be divided into two equal doses per day.
Calculating the total dose per day in mg:
Convert the child's weight to kg:
26 lb ÷ 2.2 lb/kg = 11.82 kg
Calculate the total dose per day:
11.82 kg × 2 mg/kg/day = 23.64 mg/day
Calculating the dose per dose:
Divide total dose by 2: 23.64 mg/day ÷ 2 doses/day = 11.82 mg/dose
Calculating the volume to administer per dose:
Use the concentration of the medication: 11.82 mg ÷ (15 mg/5 mL) = 11.82 mg ÷ 3 mg/mL = 3.94 mL
Rounding the answer:
3.94 rounds to 3.9 mL
Correct Answer is ["1"]
Explanation
1 tablespoon (Tbsp) = 15 milliliters (mL).
Calculate the dose in tablespoons:
15 mL÷15 mL/Tbsp=1
Round to the nearest whole number: 1 Tbsp
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