Difficulty: Medium
Average Score: 84%
Simulated
A physician prescribes Vancomycin 20 mg/kg intravenous (IV). The patient weighs 110 lbs. The medication is available in vials which contain 500 mg per 8 mL. What should the nurse withdraw from the vial? (round to the nearest whole number)
Correct answer
16 mL
Rationale
To calculate the dosage of Vancomycin, convert the patient's weight to kilograms (110 lbs / 2.2 = 50 kg). Multiply by the prescribed dosage (50 kg * 20 mg/kg = 1000 mg). The vials contain 500 mg per 8 mL, so 1000 mg requires 16 mL (1000 mg / (500 mg/8 mL)).