Great saphenous vein valve function test

The great saphenous vein valve function test is an auxiliary examination method for checking whether the venous blood vessels are normal. The principle is that the normal function of the venous valve can prevent blood from flowing backwards, such as venous insufficiency, standing after emptying the vein, and the blood will flow backward due to the effect of gravity, and the vein will quickly fill. It is used to examine the function of the great saphenous vein valve and the loss of saphenous vein valve function in patients with simple lower extremity varices. Information on the function of the valve can also be provided. Through this examination, the corresponding symptoms can be judged. Basic Information Specialist classification: cardiovascular examination classification: electrocardiogram Applicable gender: whether men and women apply fasting: not fasting Analysis results: Below normal: Normal value: no Above normal: negative: It is normal for a superficial vein to gradually fill for more than 30 seconds. Positive: Positive patients suggest severe saphenous vein dysfunction. Helps choose the surgical method. If the blood stops suddenly during the rapid reversal, it indicates that the venous valve is functioning well. Tips: Maintain a normal diet and sleep. Normal value Negative: The shallow veins are filled slowly after loosening, not in a top-down order. That is, let the patient stand and release the tourniquet within 10 seconds. If the superficial vein is gradually filled for more than 30 seconds, it is normal. Clinical significance Abnormal results: After the positive compression, the blood in the superficial vein is rapidly reversed from top to bottom, and the vein becomes full from top to bottom. Positive patients suggest severe saphenous vein dysfunction. Helps choose the surgical method. If the blood stops suddenly during the rapid reversal, it indicates that the venous valve is functioning well. The people who need to be examined: the saphenous veins are treated with surgery. Positive results may be diseases: primary lower extremity venous valve insufficiency, varicose veins, vascular disease, simple lower extremity varicose veins Taboo before the test: maintain a normal diet and sleep. Requirements for examination: the pressure is moderate when the tourniquet or finger is pressed, so as to block only the great saphenous vein, and it is not suitable for deep vein and arterial blood flow. Inspection process 1. The patient is lying on his back and revealing the lower limbs. Raise the affected limb and allow the superficial venous return to be completely emptied. 2. Tether the tourniquet under the groin or press the oval fossa with your thumb. The pressure should only block the saphenous vein return and does not interfere with deep venous return. 3. The patient stands up, releases the tourniquet after standing, or releases the pressed finger to observe the blood flow and filling of the superficial vein. Not suitable for the crowd Inappropriate crowd: arteriovenous fistula. Adverse reactions and risks Nothing.