In situ vein branch angioplasty

: This technique has proved useful in dealing with a variety of difficult technical problems encountered during the performance of "in situ" vein bypass. Among these are the management of fibrotic valves, endothelial damage with platelet adhesion, accidental valvulotome perforation or stenosis of short segments of the saphenous vein. The lumen of even quite small veins can easily be visualized and a subsequent repair accomplished without compromise of the venous lumen, while the patch remains in continuity with the saphenous vein.