At what percentage the failure rate of vein graft will be within one year?

Accepted for publication Feb 22, 2019. Approximately 50% of saphenous vein grafts (SVGs) fail by 5 to 10 years post-coronary artery bypass grafting (CABG) and between 20–40% fail within the first year (1,2).

What is the suitable saphenous vein measurement for bypass graft?

Great saphenous vein (GSV) of adequate length and diameter should be used for arterial bypass surgery. 1-3 GSV diameter is the only factor significantly correlated with graft stenosis4 and is the best predictor of 2-year patency.

What is patency of vascular grafts?

Patency was defined as any flow through both the graft and the native vessel. The graft was determined to be nonpatent if either a stump was present or no flow could be observed.

Why is the great saphenous vein preferred for coronary vein autograft?

The saphenous vein graft has the advantage of being long and easy to handle, and has been found to require less transfusion compared to the bilateral internal mammary artery. The issue with this graft is that the patency rate is not as good as that of the left internal mammary artery.

What is the patency rate of a saphenous vein graft?

The patency rates of saphenous vein grafts after CABG at 1 year has been reported to be approximately 80%. After 5 years the patency rate drops to 65% and at 10 years GSV patency rates are approximately 50%, with only half of the veins are atherosclerosis free.

Is there a risk of vein graft occlusion?

Although, EVH has been associated with higher risk of vein graft stenosis and occlusion. The solutions in which vein grafts are stored after harvesting also play an important role. Buffered saline, instead of saline or blood, has shown to reduce the risk of significant stenosis or occlusion.

When do vein grafts progress to clinical stenosis?

Some structural changes of intima thickening and vein wall remodeling are necessary for vein graft adaptation to the arterial environment. The reasons why some of the grafts progress to clinical stenosis is unknown. The patency rates of saphenous vein grafts after CABG at 1 year is approximately 80%.

What is vein graft failure ( VGF ) in medicine?

In medicine, vein graft failure (VGF) is a condition in which vein grafts, which are used as alternative conduits in bypass surgeries (e.g. CABG), get occluded. Veins, mainly the great saphenous vein (GSV) are the most frequently used conduits in bypass surgeries (CABG or PABG), due to their ease of use and availability.