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1997•Advances in BioengineeringRequires access

Comparing the Influence of Graft Angle on Peri-Anastomotic Wall and Fluid Mechanics

Peter D. Ballyk, Matadial Ojha, Colin Walsh

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Abstract

Abstract Distal anastomotic intimal hyperplasia (DAIH) can lead to outflow stenosis of vascular bypass grafts. In end-to-side graft-artery anastomoses, two separate regions of DAIH have been identified: (i) the suture line and (ii) the floor of the anastomosis across from the suture line (Bassiouny et al., 1992). Suture-line intimal thickening seems to be associated with post-surgical healing and influenced by graft-artery compliance mismatch (Trubel et al., 1994), while floor hyperplasia appears to be linked to fluid mechanical phenomena, such as temporal variations in wall shear stress (Ojha, 1994).

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Abstract Distal anastomotic intimal hyperplasia (DAIH) can lead to outflow stenosis of vascular bypass grafts. In end-to-side graft-artery anastomoses, two separate regions of DAIH have been identified: (i) the suture line and (ii) the floor of the anastomosis across from the suture line (Bassiouny et al., 1992). Suture-line intimal thickening seems to be associated with post-surgical healing and influenced by graft-artery compliance mismatch (Trubel et al., 1994), while floor hyperplasia appears to be linked to fluid mechanical phenomena, such as temporal variations in wall shear stress (Ojha, 1994).

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Available abstract

Abstract Distal anastomotic intimal hyperplasia (DAIH) can lead to outflow stenosis of vascular bypass grafts. In end-to-side graft-artery anastomoses, two separate regions of DAIH have been identified: (i) the suture line and (ii) the floor of the anastomosis across from the suture line (Bassiouny et al., 1992). Suture-line intimal thickening seems to be associated with post-surgical healing and influenced by graft-artery compliance mismatch (Trubel et al., 1994), while floor hyperplasia appears to be linked to fluid mechanical phenomena, such as temporal variations in wall shear stress (Ojha, 1994).

Key concepts: Anastomosis, Intimal hyperplasia, Stenosis, Suture line, Fibrous joint, Medicine, Shear stress, Artery

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