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.

Annotation

do not confuse with ARTERIOVENOUS ANASTOMOSIS, an anatomical term; coordinate IM with specific artery /abnorm + specific vein /abnorm (IM) or precoordinate vessel/disease headings (IM); Manual 23.19.6+; congenital cerebral arteriovenous fistula = INTRACRANIAL ARTERIOVENOUS MALFORMATIONS (IM) + ARTERIOVENOUS FISTULA (IM); surgically created arteriovenous fistula = ARTERIOVENOUS SHUNT, SURGICAL

DUI

D001164 MeSH Browser

CUI

M0001737

History note

67; was FISTULA, ARTERIOVENOUS 1963-66

Online note

use ARTERIOVENOUS FISTULA to search FISTULA, ARTERIOVENOUS 1966

Public note

67; was FISTULA, ARTERIOVENOUS 1963-66