Occlusive surgery for traumatic arteriovenous fistula

Arteriovenous ligation with four head ligation and tumor sacectomy. When the collateral blood supply is sufficient, ligation of the venous, venous and complete resection of the tumor sac is an effective and safe procedure. Gangrene rarely occurs after surgery, but it often causes chronic ischemia and affects the function of the limb. Therefore, this procedure is most suitable for the treatment of small but unimportant arteriovenous fistulas or arteriovenous tumors. Treatment of diseases: renal arteriovenous fistula, aortic vena cava, pulmonary arteriovenous fistula Indication If the condition is serious (especially if the heart damage is serious), it is not suitable for other operations, or if there is a risk of serious bleeding if the infection is complicated immediately after the injury, then the proximal artery and vein of the fistula should be ligated separately to reduce the heart. Blood flow. After the general situation improves, the radical surgery is performed. When the arteriovenous tumor is stuck tightly, or for other reasons it is not possible to perform radical surgery, four ligation procedures can be performed. Preoperative preparation The collateral blood supply must be sufficient. If the preoperative collateral blood supply is not sufficient, preparation for repair surgery such as vascular grafting should be done. When it is found that the vein can not be repaired by the vein, other repair surgery should be switched. If occlusion surgery is not required for vascular grafting, sympathectomy should be added. Surgical procedure After exposure and veins, they are separated at the proximal end or both ends, and the proximal or distal end of the artery and vein are ligated. Ligation can only be temporarily effective due to the presence of collateral vessels in the tumor sac, and will recur later. The effect of four ligations and folding to occlude the tumor sac is also unreliable.