shunt (shunt)
1. to turn to one side; to bypass.
2. a passage or anastomosis between two natural channels, especially between blood vessels, formed physiologically or anomalously.
3. a surgically created anastomosis; also, the operation of forming a shunt.
arteriovenous shunt
1. the diversion of blood from an artery directly to a vein.
2. a U-shaped plastic tube inserted between an artery and a vein; usually to allow repeated access to the arterial system for hemodialysis.
Blalock-Taussig shunt see under operation.
cardiovascular shunt diversion of the blood flow through an anomalous opening from the left side of the heart to the right side or from the systemic to the pulmonary circulation (left-to-right s.), or from the right side to the left side or from the pulmonary to the systemic circulation (right-to-left s.) .
left-to-right shunt see cardiovascular s.
LeVeen peritoneovenous shunt continuous shunting of ascites fluid from the peritoneal cavity to the jugular vein by means of a surgically implanted subcutaneous plastic tube.
portacaval shunt surgical anastomosis of the portal vein and the vena cava. 
)
Shunts diverting portal venous blood flow from the liver. (A), Portacaval shunt; (B), splenorenal shunt.
right-to-left shunt see cardiovascular s.
splenorenal shunt removal of the spleen with anastomosis of the splenic vein to the left renal vein.
Shunts diverting portal venous blood flow from the liver. (A), Portacaval shunt; (B), splenorenal shunt.
ventriculoatrial shunt the surgical creation of a communication between a cerebral ventricle and a cardiac atrium by means of a plastic tube, to permit drainage of cerebrospinal fluid for relief of hydrocephalus.
ventriculoperitoneal shunt a communication between a cerebral ventricle and the peritoneum by means of plastic tubing; done for the relief of hydrocephalus.
| splenorenal shunt n. Anastomosis of the splenic vein to the left renal vein, usually end-to-side, for control of portal hypertension. |
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