arteriovenous anastomosis


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Related to arteriovenous anastomosis: vasa vasorum, arterial anastomosis

arteriovenous anastomosis

[är‚tir·ē·ō′vē·nəs ə‚nas·tə′mō·səs]
(anatomy)
A blood vessel that connects an arteriole directly to a venule without capillary intervention.
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References in periodicals archive ?
reported the results of a prospective study on 50 patients in which they performed the ligation of venous perforating vessels right after the arteriovenous anastomosis. The results of his study show that such a technique is successful in preventing the digital hypoperfusion syndrome and venous hypertension despite the fact that in his study 22% of the patients were diabetic patients [4].
As the arteriovenous anastomosis has a complex geometry, blood flow with relatively high Reynolds characteristics can be found causing turbulent flow and there are regions of high WSS along the venous wall, with significant flow separation and swirling zones (Lee, 2007).
Venous malformations are caused by a disturbance in the late stages of angiogenesis (Trunal stage) and result in the persistence of arteriovenous anastomosis present during embryonic life.