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

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Presentation transcript:

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 331-338 (January 2009) DOI: 10.1016/j.athoracsur.2008.07.023 Copyright © 2009 The Society of Thoracic Surgeons Terms and Conditions

Fig 1 (Left) Internal wall stress and (right) external wall stress causing deformation. The Annals of Thoracic Surgery 2009 87, 331-338DOI: (10.1016/j.athoracsur.2008.07.023) Copyright © 2009 The Society of Thoracic Surgeons Terms and Conditions

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 2009 87, 331-338DOI: (10.1016/j.athoracsur.2008.07.023) Copyright © 2009 The Society of Thoracic Surgeons Terms and Conditions

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 2009 87, 331-338DOI: (10.1016/j.athoracsur.2008.07.023) Copyright © 2009 The Society of Thoracic Surgeons Terms and Conditions

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 2009 87, 331-338DOI: (10.1016/j.athoracsur.2008.07.023) Copyright © 2009 The Society of Thoracic Surgeons Terms and Conditions

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 2009 87, 331-338DOI: (10.1016/j.athoracsur.2008.07.023) Copyright © 2009 The Society of Thoracic Surgeons Terms and Conditions