Lindbergh<unk>  pump, c. 1935, an early device for simulating natural<unk> <unk>  is the passage of fluid through the circulatory system or lymphatic system to an organ or a tissue, usually referring to the delivery of blood to a capillary bed in tissue.<unk>  is measured as the rate at which blood is delivered to tissue, or volume of blood per unit time (blood flow) per unit tissue mass. The SI unit is m3/(s·kg), although for human organs<unk>  is typically reported in ml/min/g. The word is derived from the French verb "perfuser" meaning to "pour over or through". All animal tissues require an adequate blood supply for health and life. Poor<unk>  (malperfusion), that is, ischemia, causes health problems, as seen in cardiovascular disease, including coronary artery disease, cerebrovascular disease, peripheral artery disease, and many other conditions. Tests verifying that adequate<unk>  exists are a part of a patient's assessment process that are performed by medical or emergency personnel. The most common methods include evaluating a body's skin color, temperature, condition (dry/soft/firm/swollen/sunken/etc), and capillary refill. During major surgery, especially cardiothoracic surgery,<unk>  must be maintained and managed by the health professionals involved, rather than left to the body's homeostasis alone. As the lead surgeons are often too busy to handle all hemodynamic control by themselves, specialists called<unk> ists manage this aspect. There are more than one hundred thousand<unk>  procedures annually.
Perfusion
Infusion pump
Hemoperfusion
Infiltration analgesia
Infusion therapy
Machine perfusion
Decompression 
Blood fractionation