Aspiration of the common femoral vein in preparation for placement of a central venous catheter

The common femoral vein lies superficial and medial to the femoral artery. When accessing the vein, orient the needle with the bevel up and introduce it angled 20 to 30 degrees to the skin. Insert the needle 1 to 2 cm inferior to the inguinal ligament and just medial to the femoral artery. The vessel is normally reached within 2 to 4 cm but may be deeper in obese or edematous patients.