4. Discussion
trauma, spasm, CVH, EVH, flushing
The use of arterial conduits for myocardial revascularization increased during the last decade; despite this, the SVG is still the most commonly used graft due to its availability, less demanding harvesting techniques and greater resistance on the spasm than arterial grafts [On the other hand, immunohistochemical staining by CD31, vWF, Caveolin, and eNOS showed a significantly higher grade of endothelial damage in the CVH and EVH groups compared to the NT group. These results are similar to the other studies, which concluded that excessive manipulation, blunt trauma of the SVGs, graft flushing and distension with uncontrolled pressure, impaired the integrity and function of the endothelium [