Endovascular closure of arteriovenous fistulas (AVF) is a minimally invasive procedure used to treat abnormal connections between arteries and veins, often caused by trauma or certain medical conditions. The procedure typically involves the use of embolization, where a catheter is used to deliver embolic agents to close the fistula, or stenting to block blood flow to the affected area.

This technique is highly effective in managing AVFs, reducing the risk of complications such as heart failure, bleeding, or ischemia, and is preferred over traditional surgery due to its lower risk and quicker recovery.