Traffic venous valve function test

The venous venous valve function test (Pratt test) is an auxiliary examination method used to check whether the veins are normal. The anastomosis of the anastomotic branch valve between the deep and shallow veins is defective. In the standing position, blood from the deep veins can flow back into the superficial veins, filling the superficial veins. In this test, the varicose veins were emptied, and the blood flow was blocked at the proximal end. Then the superficial veins were observed to determine the function of the tributary valve. Through this examination, the corresponding symptoms can be judged.

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