Arteriovenous fistula

**Arteriovenous fistula** is a pathological anastomosis between vessels of the arterial and venous types, for example from arteries to veins or vice versa. It manifests itself as pain, numbness of the limb as a result of impaired blood flow, increased heart rate with chest pain. Diagnosed by instrumental methods, the main method of treatment is surgical excision. Prevention includes control of chronic diseases, arterial or venous stenoses.

**Description**

Fistula arteriovenous is a pathological connection of the trunks of the main arteries and the vena cava. Normally, the vessel wall is impenetrable to the blood flow contained in them. The pathology that disrupts its isolation is manifested by the development of an anastomosis between two types of vessels, namely arterioventricular, a term taken from various European languages ​​and composed of two Greek words “arterial” (ar–) and “vein” (−v–).

This pathological path is arterial fistula

Fistula arteriovenous connection (anastomosis) is a pathological anastomosis between an artery branch and a vein branch, creating a direct transition of blood from arteries to veins; in contrast to an aneurysm - an abnormal expansion of a blood vessel with all its altered walls.

Aneurysm of arterial vessels and anastomosis

What is a fistula? A fistula is a pathological anastomosis between the arterial and venous systems of organs, resulting from their damage. An anastomosis can occur both during operations and as a result of injury. Fistulas can vary in location and cause serious health problems such as bleeding, infection, pressure, and organ dysfunction.

**Arteriovenous fistula (f.arteriovenosis)** (also known as anastomosis, sinus or arteriovenous fistula). The term “fistula” is used to describe a pathological anastomosis between the venous system and the arterial system. The vessels connect to each other, forming a direct path through which blood from the artery diffuses through the system