Arteriovenous Fistula

**Definition:** An abnormal direct communication between an artery and a vein without passing through the CAPILLARIES. An A-V fistula usually leads to the formation of a dilated sac-like connection, arteriovenous aneurysm. The locations and size of the shunts determine the degree of effects on the cardiovascular functions such as BLOOD PRESSURE and HEART RATE.

**Tree numbers:** - C14.240.850.750.147 - C14.240.850.984.750 - C14.907.150.125 - C14.907.933.555 - C16.131.240.850.750.125 - C23.300.575.950.250

**Synonyms:** - Arteriovenous Fistulas