A nurse is preparing to administer amphotericin B lipid complex 3.75 mg/kg via intermittent IV bolus to a client who weighs 167 lb. Available is amphotericin B lipid complex 300 mg in 300 mL of dextrose 5% in water. How many mL should the nurse administer? (Round the answer to the nearest whole number. Use a leading zero if it applies.)
The Correct Answer is ["285"]
Calculation:
Convert the client's weight from pounds (lbs) to kilograms (kg):
Formula: Weight in kg = Weight in lbs / 2.2 lbs/kg
= 167 lbs / 2.2 lbs/kg
≈ 75.91 kg
Calculate the total dose of amphotericin B lipid complex needed:
Ordered dose: 3.75 mg/kg
Client's weight in kg: ≈ 75.91 kg
Formula: Total dose (mg) = Ordered dose (mg/kg) × Client's weight (kg)
= 3.75 mg/kg × 75.91 kg
≈ 284.66 mg
Determine the concentration of the available amphotericin B lipid complex solution:
Available amount: 300 mg
Volume of solution: 300 mL
Formula: Concentration (mg/mL) = Total amount (mg) / Total volume (mL)
= 300 mg / 300 mL
= 1 mg/mL
Calculate the volume of solution to administer:
Formula: Volume to administer (mL) = Desired dose (mg) / Concentration (mg/mL)
= 284.66 mg / 1 mg/mL
= 284.66 mL
Round the answer to the nearest whole number:
284.66 mL rounded to the nearest whole number is 285 mL.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["1.1"]
Explanation
Calculation:
Convert the client's weight from pounds (lbs) to kilograms (kg):
Formula: Weight in kg = Weight in lbs / 2.2 lbs/kg
= 143 lbs / 2.2 lbs/kg
≈ 65 kg
Calculate the total dose of filgrastim needed in micrograms:
Ordered dose: 5 mcg/kg
Client's weight in kg: 65 kg
Formula: Total dose (mcg) = Ordered dose (mcg/kg) × Client's weight (kg)
= 5 mcg/kg × 65 kg
= 325 mcg
Determine the concentration of the available filgrastim solution:
Available concentration: 300 mcg/mL
Calculate the volume of filgrastim to administer:
Formula: Volume to administer (mL) = Desired dose (mcg) / Concentration (mcg/mL)
= 325 mcg / 300 mcg/mL
≈ 1.0833 mL
Round the answer to the nearest tenth:
1.0833 mL rounding to the nearest tenth gives us 1.1 mL.
Correct Answer is ["78"]
Explanation
Calculation:
Convert the client's weight from pounds (lbs) to kilograms (kg):
Formula: Weight in kg = Weight in lbs / 2.2 lbs/kg
= 143 lbs / 2.2 lbs/kg
≈ 65 kg
Calculate the desired dose of nitroprusside per minute in micrograms:
Ordered dose: 4 mcg/kg/min
Client's weight in kg: 65 kg
Formula: Dosage (mcg/min) = Ordered dose (mcg/kg/min) × Client's weight (kg)
= 4 mcg/kg/min × 65 kg
= 260 mcg/min
Calculate the desired dose of nitroprusside per hour in micrograms:
Conversion factor: 1 hour = 60 minutes
Formula: Dosage (mcg/hr) = Dosage (mcg/min) × 60 min/hr
= 260 mcg/min × 60 min/hr
= 15600 mcg/hr
Determine the concentration of the nitroprusside solution in micrograms per milliliter:
Available nitroprusside: 50 mg
Convert milligrams to micrograms: 50 mg × 1000 mcg/mg = 50000 mcg
Total volume of solution: 250 mL
Formula: Concentration (mcg/mL) = Total micrograms / Total mL
= 50000 mcg / 250 mL
= 200 mcg/mL
Calculate the IV pump flow rate in mL/hr:
Formula: Flow rate (mL/hr) = Desired dose per hour (mcg/hr) / Concentration (mcg/mL)
= 15600 mcg/hr / 200 mcg/mL
= 78 mL/hr
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