Hemodynamic Factors at the Distal End-to-Side Anastomosis of a Bypass Graft With Different POS:DOS Flow Ratios

[+] Author and Article Information
Xue-Mei Li, Stanley E. Rittgers

Department of Biomedical Engineering, The University of Akron, Akron, OH 44325-0302

J Biomech Eng 123(3), 270-276 (Dec 13, 2000) (7 pages) doi:10.1115/1.1372323 History: Received May 25, 1999; Revised December 13, 2000
Copyright © 2001 by ASME
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Mock pulsatile flow system showing distal anastomosis model, proximal (POS) and distal (DOS) outflow segments, and LDA measurement device
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Typical graft inlet flow waveform
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Axial positions along graft hood and artery floor for velocity measurements
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Illustration of flow streamline patterns during late diastole for (a) Case 1 (POS:DOS=0:100), (b) Case 2 (POS:DOS=25:75) and (c) Case 3 (POS:DOS=50:50). Bold arrows indicate the ranges of movement and the direction of the stagnation point from systole to diastole (see text for further explanation).
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Spatial distributions of mean wall shear stress: (ac) along the artery floor for Cases 1–3, respectively, and (df ) along the graft hood for Cases 1–3, respectively
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Zero WSS plane (black: WSS≥0 and white: WSS<0): (ac) along the artery floor for Cases 1–3, respectively and (df ) along the graft hood for Cases 1–3, respectively




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