Embolism Tissue

TISSUE EMBOLISM

Embolism (embolus) - blockage of a vessel by an embolus - part of a foreign body or a blood clot, which leads to complete or partial obstruction of the vessels. Depending on the location of the emboli, embolism of the systemic circulation and pulmonary circulation (pulmonary) are distinguished. Emboli may contain one of the following substances:

Allophilic – solids with a high degree of agglomeration (mechanical embolus); softer fragments of blood cells (for example, red blood cells and white blood cells) mixed with fibrin and blood cells (collateral thromboembolus). Autophilic - are clotted blood containing elements of embryonic hematopoiesis (swelling thrombus; synonym: coagulation mass, seroshka, hypocellular thrombus). Most often formed by localized infarction embolism. Bifilar is a combination of autophilic and allophilic emboli that occurs in postcapillary arterioles during extensive infarction (ischemic embolism). The blood is saturated with substances - products of the vital activity of tissues and cells, the breakdown of hemoglobin, and serum proteins. These substances are carried through the blood (plasma, fibrin). After the breakdown of the latter, even more waste products are formed, and coagulation occurs: water is released, fibrin threads are formed, connecting to each other in a network. The network blocks the path of blood flow. Gradually, a lump of fibrin forms and the plasma liquefies (gelatinous plug). Pinholes are formed, the more holes, the more the thrombus expands