Hemodialysis uses an artificial kidney machine to cleanse the blood and remove excess body fluids. An access device called a fistula or graft is placed in an arm or leg, or temporary access through a hemodialysis catheter is placed in the neck.
Both access devices allow the connection of the bloodstream to the artificial kidney, where it is cleansed and returned to the patient. The treatment usually averages four hours, three times per week.