New bioprosthetic venous valve offers hope for patients suffering from chronic venous insufficiency
University of Chicago Medical CenterChronic venous insufficiency (CVI) is a vascular condition affecting millions of people in the United States in which veins in the leg cannot efficiently carry blood back to the heart for oxygenation. For patients suffering from the condition, malfunctioning valves can cause blood to flow backwards and pool in the veins in the legs, which can lead to significant downstream affects for some people.