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Lindsay C.H. John, MD, FRCS  The Annals of Thoracic Surgery 

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Presentation on theme: "Lindsay C.H. John, MD, FRCS  The Annals of Thoracic Surgery "— Presentation transcript:

1 Biomechanics of Coronary Artery and Bypass Graft Disease: Potential New Approaches 
Lindsay C.H. John, MD, FRCS  The Annals of Thoracic Surgery  Volume 87, Issue 1, Pages (January 2009) DOI: /j.athoracsur Copyright © 2009 The Society of Thoracic Surgeons Terms and Conditions

2 Fig 1 (Left) Internal wall stress and (right) external wall stress causing deformation. The Annals of Thoracic Surgery  , DOI: ( /j.athoracsur ) Copyright © 2009 The Society of Thoracic Surgeons Terms and Conditions

3 Fig 2 The velocity profile of laminar flow in a vessel. (Left) Transverse section of a vessel. (Right) Cross section of a vessel. (D = distance from the vessel wall; V = velocity, and the longer the arrow the greater the velocity.) The Annals of Thoracic Surgery  , DOI: ( /j.athoracsur ) Copyright © 2009 The Society of Thoracic Surgeons Terms and Conditions

4 Fig 3 Transverse section of a vessel showing typical velocity profiles for (left) high-wall shear rate and (right) low-wall shear rate. The Annals of Thoracic Surgery  , DOI: ( /j.athoracsur ) Copyright © 2009 The Society of Thoracic Surgeons Terms and Conditions

5 Fig 4 The direction of action of (left) wall stress (normal to the vessel wall) and (right) wall shear stress (parallel to the vessel wall). The Annals of Thoracic Surgery  , DOI: ( /j.athoracsur ) Copyright © 2009 The Society of Thoracic Surgeons Terms and Conditions

6 Fig 5 Summary of the interaction of primary and secondary biomechanical factors together with their effect on the vessel wall. The Annals of Thoracic Surgery  , DOI: ( /j.athoracsur ) Copyright © 2009 The Society of Thoracic Surgeons Terms and Conditions

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