Where Is Arteriovenous Shunt?

Arteriovenous shunts are abnormal connections between coronary arteries and a compartment of the venous side of the heart. The abnormal connection may originate in the right or left coronary artery, or, more rarely, multiple shunts originating in both arteries may be present.

What are AV shunts for?

An arteriovenous fistula can increase preload. AV shunts also decrease the afterload of the heart. This is because the blood bypasses the arterioles which results in a decrease in the total peripheral resistance (TPR). AV shunts increase both the rate and volume of blood returning to the heart.

Where is the arteriovenous fistula located?

An AV fistula is typically located in your arm, however, if necessary it can be placed in the leg. With an AV fistula, blood flows from the artery directly into the vein, increasing the blood pressure and amount of blood flow through the vein.