Determines the competency of the valves in communicating veins between the superficial and deep veins of the leg.
- Used to evaluate the competence of the valves in the great saphenous vein and in the communicating veins between the superficial and deep venous systems.
- Elevate the patient’s leg to 90 degrees to empty it of venous blood.
- Place a tourniquet around the upper thigh tightly enough to occlude the great saphenous
- Ask the patient to stand
- Normally this takes about 35s for the saphenous vein to fill from below
- Release of the tourniquet at 60 s produces no sudden increment in venous filling if the saphenous valves are competent.
Bates, Barbara. 1974. A Guide to Physical Examination. J.B. Lippincott Company, Toronto.