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 ["23"]
Explanation
Calculation:
Calculate the total amount of lidocaine in milligrams:
Available lidocaine: 2 g
Conversion: 2 g × 1000 mg/g = 2000 mg
Determine the concentration of the lidocaine solution in milligrams per milliliter:
Total lidocaine: 2000 mg
Total volume of solution: 250 mL
Formula: Concentration (mg/mL) = Total milligrams / Total mL
= 2000 mg / 250 mL
= 8 mg/mL
Calculate the desired dose of lidocaine per hour in milligrams:
Ordered dose: 3 mg/min
Conversion: 3 mg/min × 60 min/hr = 180 mg/hr
Calculate the IV pump flow rate in mL/hr:
Formula: Flow rate (mL/hr) = Desired dose per hour (mg/hr) / Concentration (mg/mL)
= 180 mg/hr / 8 mg/mL
= 22.5 mL/hr
Round the answer to the nearest whole number:
22.5 mL/hr rounded to the nearest whole number is 23 mL/hr.
Correct Answer is ["6.5"]
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 cyclosporine needed:
Ordered dose: 5 mg/kg
Client's weight in kg: 65 kg
Formula: Total dose (mg) = Ordered dose (mg/kg) × Client's weight (kg)
= 5 mg/kg × 65 kg
= 325 mg
Determine the concentration of the available cyclosporine injection:
Available concentration: 50 mg/mL
Calculate the volume of cyclosporine to administer:
Formula: Volume to administer (mL) = Desired dose (mg) / Concentration (mg/mL)
= 325 mg / 50 mg/mL
= 6.5 mL
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