外科试验方法（Surgical test methods）.doc

外科试验方法（Surgical test methods） Perthes Deep venous patency test is a method of identifying signs of deep venous patency. Especially varicose veins can be important signs of surgery. Identification method: Let the patient stand up and place a tourniquet at the 1/3 on the patients thigh. This time, the varicose veins of the lower extremity may be more pronounced than before. Let the patient stretch the knee of the lower limb (10-20 times 10-20 times). Clinical significance If after the event, the pathological changes of varicose vein significantly reduced, indicating that the calf, calf muscle contraction force pump, stasis in the great saphenous vein (vein) in venous blood through the deep vein communicating branch between the deep venous reflux, to, because of deep vein patency, good function, venous blood reflux can be further the iliac vein. If after the event, the pathological changes of varicose veins is not reduced, but increased or the patient feels lower limb pain, although after leg activity, calf muscle pump contraction, should force stasis in the great saphenous vein (vein) in venous blood through the vein between the perforating depth, reflux to deep vein, but not because of lower extremity deep vein patency, dysfunction, venous blood in deep vein can not return. The patients with lower extremity saphenous vein (vein) of blood stasis and aggravate, deep venous congestion can also aggravate. Therefore, the varicose veins of the lesions not only did not reduce, but aggravated the patient, often feel pain in the lower extremities. Deep vein patency test plays a very important role in the choice of surgery for varicose veins of the lower extremity. If the patients superficial vein (great saphenous vein or small saphenous vein) dysfunction is not smooth, and the function of deep vein patency and also have problems, you can not do surgical ligation of superficial vein, otherwise it will force the blood back to the original dysfunction of deep venous venous syste