The heart and blood vessels comprise the two elements of the cardiovascular system that work together in providing nourishment and oxygen to the organs of the body. The activity of these two elements is also coordinated in the body's response to stress.
graft vs fistula. A graft is usually in a horse-shoe or letter C shape, and is normally firmer to the touch. Fistulas usually run up and down and are more squiggly shaped, with bumps (pseudo anurisms) and softer to the touch. Here are some good pics of fistulas. For some reason, I could not find any pics of grafts on the net.
Once healed, the AV fistula will allow for dialysis access for several years. If a graft has been inserted, it might have less longevity; a graft typically lasts about two years. The long-term effects of the surgery can also be helped by daily routines in order to maximize the benefits of dialysis.