Side effects of peripheral artery bypass include several days of soreness at the site of incision. Some swelling of the leg may occur, particularly after walking or sitting for a period of time. Significant swelling may indicate overdoing an activity or adding too much salt to the diet. Swelling can be minimized by keeping the leg elevated when sitting or riding in a car, and avoiding sitting for more than an hour at a time. Mild gradient compression stockings may also help prevent the leg swelling.