The exudate (from lat. exsudare - to vipotest) is the fluid accumulating in the tissues or cavities in inflammation. Exudate is formed as a result of violation of the permeability of the vascular wall in the middle of inflammation and exit from these parts of the blood. The basis of the exudate is the blood plasma with dissolved proteins (up to 7-8%). The fluid in the cavities always more or less troubled by the blood content and slomannyh cells local fabrics.
Occurs exudate in the exit of vessels (exudation, effusion) units of blood (the liquid portion, the proteins formed elements) due to increased permeability of the walls. Unlike exudate, transudate (see) has less protein (0,5-3%), does not contain enzymes characteristic of plasma, and vihodnie transudate in the cavity is not accompanied by inflammation of the serous membranes.
Depending on the qualitative composition of the emitted into the tissues or in oral fluid there are several types of exudate. Serous exudates more common in inflammation serous and synovial membranes, consists of whey protein (3-5%), small number of leukocytes and detached cells mesotheli. It is readily absorbed from cavities, but when serous inflammation of parenchymatous organs may be the organization and to give the outcome in sclerotic process. Fibrinous exudate contains fibrinogen, which is on the surfaces involved in the inflammatory process, turns into a film of fibrin, easily separable (lobar inflammation) or hard (diferitele inflammation). Fibrinous exudate resolves or is exposed to the organization. In the latter case, the form of fusion and adhesions between the authorities and cavity wall. Purulent exudate contains a large number of leukocytes, and hemorrhagic - erythrocytes (see Inflammation).
Cm. also - a Transudate.