Localization of bypass-induced changes in flow in coronary artery models.
Right coronary artery bypass restores blood flow through heart tissues. This also induces changes in flow leading to its failure. By this work the sites which are prone to such changes are localized. The bypass models are developed from transparent silicon rubber of elastic properties similar to arterial tissues. Flow visualization is carried out by photoelasticity technique by using dilute solution of vanadium pentoxide. This analysis carried out under pulsatile flow conditions shows that the proximal stenotic region continues to contribute to the alteration in flow in the hood region of the bypass. Thus making its proximal and distal regions prone to flow-induced changes, which may lead to its blockage over the long duration.
Biomedical Engineering Division, Indian Institute of Technology, Chennai 600 036, India. msingh@iitm.ac.in
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D001783:Blood Flow Velocity; D001026:Coronary Artery Bypass; D003326:Coronary Circulation; D003327:Coronary Disease / Q000601:surgery; D003331:Coronary Vessels / Q000503:physiopathology*; D006801:Humans; D017078:Laser-Doppler Flowmetry / Q000379:methods*; D008954:Models, Biological; D011673:Pulsatile Flow