a heart defect, which allows blood to cross from the right to left chambers of the heart, bypassing the lungs

a palliative (helping) operation to increase the amount of blood going to the lungs

In respiratory physiology, a passageway for blood to bypass an organ. In a right-to-left shunt, blood passes from systemic veins to systemic arteries bypassing the pulmonary capillaries (so that it does not exchange oxygen or carbon dioxide with the alveoli).

The joining between two veins to reduce pressure and stop bleeding varices.

A passage between 2 channels such as blood vessels.

a connector to allow blood flow between two locations.

An electrical bypass circuit that proportionally divides current flow between the shunt and the shunted equipment. It also allows high current measurements with low-current equipment.

an abnormal passage of blood between two blood vessels or between the two sides of the heart.

a small device that is placed into a blood vessel to channel blood flow around an area.

A direct flow of blood from an artery to a vein.

A connector that allows blood to flow between two locations.

Bypass; operation used to relieve portal hypertension

Movement of blood through a congenitally abnormal or surgically created connection and communication between two circuits, at the level of the atria, ventricles, or great vessels. "Shunt" is a physiologic term, in contrast to "connection" which is an anatomic term.