Perfusion.

Perfusion is the process of fluid passage from the circulatory or lymphatic system to tissues or organs. Perfusion is often referenced when discussing blood flow and the effectiveness of blood passage through the circulatory system to blood vessels in tissue. Good perfusion is important to overall health in humans and animals. Getting sufficient blood supply to tissues and organs is paramount to achieving many bodily processes that promote overall health. When perfusion is poor, it can cause a condition known as ischemia, which is when blood supply has difficulty reaching a tissue or organ. Poor perfusion can lead to a number of health problems such as cardiovascular disease among other conditions. During some types of major surgery, perfusion must be conducted mechanically by professionals known as perfusionists.