Order: Vancomycin 40 mg/kg/d divided into q.6h. doses IV. The manufacturer recommends reconstituting 500mg vial with 10 mL, yielding 50 mg/mL. How many milliliters will you administer for each dose if the client weighs 90 lb?
1. 180 mL
2. 18 mL
3. 8.2 mL
4. 3.4 mL