A 73-year-old man has ischemic rest pain of the left calf. Workup reveals occlusion of the left superficial femoral artery. He is scheduled for an elective femoral-popliteal bypass. A good way to reduce the risk of infection would be to:
Irrigate the wound with bacitracin during the operation Start cefazolin 1 gIV 4 hours before the surgery Use a plastic adherent drape Not shave the leg