An arteriovenous fistula is an abnormal connection or passageway between an artery and a vein. This condition can occur anywhere in the body but is most commonly found in the kidneys, brain, and liver. Arteriovenous fistulas can lead to a variety of symptoms and complications, including high blood pressure, heart failure, and bleeding. Research in this area focuses on understanding the causes, diagnosis, and treatment options for arteriovenous fistulas. This includes studying the underlying mechanisms that lead to the formation of these abnormal connections, developing imaging techniques to accurately diagnose them, and exploring surgical and nonsurgical treatments to repair or close the fistula. By advancing our understanding of arteriovenous fistulas, researchers aim to improve outcomes and quality of life for patients with this condition.