A Vein Mapping for Bypass Graft Ultrasound is an ultrasound of the superficial veins in the legs and sometimes the arms. Your doctor usually wants to know if the main superficial veins are present in the legs and if they are of a size that can be used for bypass sugery. They may have been used previously for heart bypass or for bypassing blockages in the arteries of your legs. The diameters of the veins are measured and documented. Occasionally, if surgery is within days, the veins are marked on the legs with a permanent marking pen.
- You will be taken to a private room. A staff member will explain the procedure and answer any questions you may have.
- You will be asked to remove clothing to access the area to be examined and to stand up on a small step.
- Gel is placed on the area of interest so that the sound waves can pass through to the relevant veins. The ultrasound probe is moved over the veins. Diameters of the veins are measured.
- If the Doctor requests, the vein location is marked on the skin with a permanent marking pen.
- The examination takes 30 minutes.