How many vials are needed to compound an IV bag containing 480 mg of gentamicin if gentamicin is available in 80 mg/2 ml vials?

To determine the number of vials needed to compound an IV bag containing 480 mg of gentamicin, we can calculate the total amount of gentamicin in the vials and divide it by the desired dose.
Each vial contains 80 mg of gentamicin. To achieve a total of 480 mg, we need:
480 mg / 80 mg per vial = 6 vials.
Therefore, 6 vials are needed to compound an IV bag containing 480 mg of gentamicin. The correct answer is 6 vials.