Dilatation
Dilatation
Dilatation is considered the most often –cause of graft failure suture –( line failure) together with structural defects, also forms a significant percentage of the cause of failure, bleeding and infection and other problem , by contrast , don’t seem to be as significant. Fatigue being the main cause of dilatation the extent to which dilatation may occur is also the function of the level of applied stress . In hypertensive patients dilatation could become an even more serious problem in a relatively short time .Dilatation is an inherent feature to a greater or less degree of all existing vascular grafts , even though its occurrence may not always result in graft failure , however it has been found that dilatation can be minimized or even eliminated by the in corporation of elastomeric fiber yarns. Several prototypes are under evaluation, how ever until such prostheses become available , it must be concentrated on reducing dilatation and other complications associated with it. Resulting graft failure is about 20% in most cases
