Calculation Problems
(LO 3-7, 3-9) The physician orders cefoxitin sodium ( Mefoxin ) 0.75 g IM every 12 hours. The vial of Mefoxin contains 5 grams of powder. The instructions are to add 13.2 mL of sterile water to the vial; 3 mL = 1 g. You administer _________ milliliters of the solution to contain the prescribed dose.
Change 0.75 g to mL
3 mL of the prepared solution = 1 g
The equivalent fraction =
0.75 g X = 2.25 mL
2.25 mL of the prepared solution contains 0.75 g of Mefoxin