The video clip shows what can be seen in a real-time US examination. Initially the great saphenous vein can be seen within its fascial envelope. At an inferior level a segmental GSV hypoplasia can be seen; also notice the two collaterals responsible for blood diversion.
Coronary artery bypass surgery,commonly called CABG is a surgical procedure which consists of diverting the internal mammary artery to the left anterior descending (LAD) branch of the left main coronary artery; or a harvested great saphenous vein of the leg, attaching the proximal end to the aorta or one of its major branches, and the distal end to immediately beyond a partially obstructed coronary artery.
Sonography of the saphenous compartment (white arrows) along the great saphenous vein at the thigh (A) and at the leg (B) and along the small saphenous vein at the calf (C) and in the distal lower leg (D). Sonography clearly demonstrates that the saphenous veins are enwrapped by two hyperechoic fasciae. Note in B, the posterior accessory saphenous vein (*) and the tibia (t).