45^th World Strock Summit

Anastomotic Steal Phenomena

An anastomosis is a surgical connection between two structures. It usually means a connection that is created between tubular structures, such as blood vessels or loops of intestine. For example, when part of an intestine is surgically removed, the two remaining ends are sewn or stapled together (anastomosed). A procedure to connect healthy sections of tubular structures in the body after the diseased portion has been surgically removed. The term "subclavian steal" refers to a phenomenon of flow reversal in the vertebral artery ipsilateral to a hemodynamically significant stenosis or occlusion of the prevertebral subclavian artery [The subclavian steal phenomenon (SSP) is characterized by retrograde flow within a vertebral artery ipsilateral to an upstream proximal high-grade subclavian artery stenosis or occlusion, stealing blood from the cerebral circulation. Coronary steal is the phenomenon where physiological or pharmacological vasodilation of a myocardial segment's vasculature is associated with “steal” of blood from another myocardial segment, which is already significantly vasodilateddue to the presence of a significant stenosis in a large epicardial artery