A nurse is preparing to administer epinephrine 0.01 mg/kg subcutaneous to a school-age child who weighs 66 lb. Available is epinephrine injection 1 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"]
Calculation:
Convert the child's weight from pounds (lbs) to kilograms (kg):
Formula: Weight in kg = Weight in lbs / 2.2 lbs/kg
= 66 lbs / 2.2 lbs/kg
= 30 kg
Calculate the total dose of epinephrine needed in milligrams:
Ordered dose: 0.01 mg/kg
Child's weight in kg: 30 kg
Formula: Total dose (mg) = Ordered dose (mg/kg) × Child's weight (kg)
= 0.01 mg/kg × 30 kg
= 0.3 mg
Determine the concentration of the available epinephrine injection:
Available concentration: 1 mg/mL
Calculate the volume of epinephrine to administer:
Formula: Volume to administer (mL) = Desired dose (mg) / Concentration (mg/mL)
= 0.3 mg / 1 mg/mL
= 0.3 mL
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["4"]
Explanation
Calculation:
Convert the client's weight from pounds (lbs) to kilograms (kg):
Formula: Weight in kg = Weight in lbs / 2.2 lbs/kg
= 176 lbs / 2.2 lbs/kg
= 80 kg
Calculate the total loading dose of esmolol needed in micrograms:
Ordered dose: 500 mcg/kg
Client's weight in kg: 80 kg
Formula: Total dose (mcg) = Ordered dose (mcg/kg) × Client's weight (kg)
= 500 mcg/kg × 80 kg
= 40000 mcg
Convert the total dose from micrograms to milligrams:
Conversion factor: 1 mg = 1000 mcg
Formula: Total dose (mg) = Total dose (mcg) / 1000 mcg/mg
= 40000 mcg / 1000 mcg/mg
= 40 mg
Determine the concentration of the available esmolol injection:
Available concentration: 10 mg/mL
Calculate the volume of esmolol to administer:
Formula: Volume to administer (mL) = Desired dose (mg) / Concentration (mg/mL)
= 40 mg / 10 mg/mL
= 4 mL
Correct Answer is ["1.9"]
Explanation
Calculation:
Convert the client's weight from pounds (lbs) to kilograms (kg):
Formula: Weight in kg = Weight in lbs / 2.2 lbs/kg
= 132 lbs / 2.2 lbs/kg
= 60 kg
Calculate the total daily dose of dexamethasone in milligrams:
Ordered daily dose: 0.5 mg/kg/day
Client's weight in kg: 60 kg
Formula: Total daily dose (mg/day) = Ordered dose (mg/kg/day) × Client's weight (kg)
= 0.5 mg/kg/day × 60 kg
= 30 mg/day
Determine the number of doses per day:
Dosing frequency: every 6 hours
Number of doses per day = 24 hours/day / 6 hours/dose = 4 doses/day
Calculate the dose of dexamethasone to administer per dose:
Formula: Dose per administration (mg/dose) = Total daily dose (mg/day) / Number of doses per day
= 30 mg/day / 4 doses/day
= 7.5 mg/dose
Determine the concentration of the available dexamethasone injection:
Available concentration: 4 mg/mL
Calculate the volume of dexamethasone to administer per dose:
Formula: Volume per dose (mL) = Desired dose per administration (mg/dose) / Concentration (mg/mL)
= 7.5 mg/dose / 4 mg/mL
= 1.875 mL
Round the answer to the nearest tenth:
1.875 mL rounded to the nearest tenth is 1.9 mL.
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