Most blood draws occur through the median antecubital vein, located in the inner elbow region. It is usually the easiest and least painful during the time of the draw. The use of such veins or ...

Intraoperative duplex ultrasonography was used to assess venodilatation before and after the block at the (1) midcephalic vein at the level of the elbow, (2) the distal cephalic vein at the level ...