Symptoms of perimedullary arteriovenous fistula

summary

Perimedullary arteriovenous fistula perimedullary arteriovenous fistula (pmavf) perimedullary arteriovenous fistula is also called intradural arteriovenous fistula. It comes from the direct communication between the branches of the anterior or posterior spinal artery and the anterior or posterior spinal vein. The blood flow velocity varies with the size of the fistula. The common feeding artery is anterior spinal movement. What are the symptoms of perimedullary arteriovenous fistula? Let's talk about it

Symptoms of perimedullary arteriovenous fistula

In type I, the lesions supplied by single artery were small, the flow of fistula was low, and the caliber of feeding artery and drainage vein was normal or slightly tortuous. Type II lesions were of medium size, with 1-2 thickened feeding arteries and a dilated and tortuous drainage vein at the fistula. The flow rate of the fistula was high, and there were often aneurysms at the fistula.

Type III giant arteriovenous fistulas are characterized by multiple thickened arteries, dilated drainage veins, high flow and fast flow rate, and often accompanied by giant aneurysms.

The disease usually appears in 30-40 years old, and the course of disease is progressive. The main clinical manifestations were the symptoms and signs of progressive asymmetric Radiculomyelopathy involving lower limbs.

matters needing attention

Surgical treatment should be the first choice for type I pmavf, surgical resection (or preoperative embolization) should be used for SAVM as far as possible, and interventional treatment or combination of interventional and surgical treatment should be used for type II or III pmavf. During the treatment, radical treatment should be carried out for arteriovenous short circuit, that is, operation and / or embolization to block the fistula and remove the abnormal focus.