How to check (do) the deep venous reflux test of lower limbs?

The patient lies on his back, his lower limbs are raised, and the vein is emptied. Ah, put a tourniquet on the root of his thigh to compress the great saphenous vein, then let the patient stand and loosen the tourniquet within 10 second. If varicose veins appear from top to bottom, it means that the valve is not functional. Using the same principle, the function of small saphenous vein valve can be detected by stopping bleeding in popliteal fossa system. If the vein below the tourniquet fills rapidly within 30 seconds before opening the tourniquet, it indicates that there is foot pain and venous valve insufficiency.

Deep vein patency test

② Seal the trunk of superficial femoral vein with tourniquet, and instruct the patient to kick or use Li Kick 10 times or more. Due to the movement of lower limbs, muscle contraction, superficial vein blood flows back to deep vein, which makes varicose veins empty. If the superficial vein dilates more obviously and the tension increases after exercise, it means that the deep vein is not unobstructed.

Functional test of venous valve in foot pain

3. The patient lies on his back, raises the lower limb to be examined, and ties a tourniquet on the thigh root. First, he tied the first elastic bandage from the toe to the popliteal fossa, then he tied the second elastic bandage down from the tourniquet: let the patient stand, untie the first elastic bandage down again, and continue to tie the second elastic bandage down. If a vein appears in the gap between the two bandages, it means that the vein of the foot is not working.