portacaval shunt

Thân thiện

A surgeon performs a portacaval shunt procedure.

Definition

1. Noun:
   • A surgically created bypass between the portal vein and the inferior vena cava: A "portacaval shunt" is a specific type of surgical connection. It diverts blood flow from the portal vein, which carries blood from the intestines and other abdominal organs to the liver, directly into the inferior vena cava, a major vein that returns blood to the heart. This procedure allows blood to bypass the liver.

Usage

• The term "portacaval shunt" is used exclusively in medical contexts, particularly in surgery, hepatology, and discussions of chronic liver disease complications.
• It is a countable noun (e.g., , ).
• It describes both the surgical procedure and the resulting anatomical connection.

Examples

• Noun:
  • The surgeon performed a portacaval shunt to alleviate the patient's portal hypertension.
  • Creation of a portacaval shunt is a major surgical intervention for managing variceal bleeding.
  • The portacaval shunt effectively reduced pressure in the portal venous system.

Advanced Usage

• "portacaval shunt surgery": Refers specifically to the operative procedure to create the shunt.
  • The patient is scheduled for portacaval shunt surgery next week.
• "side-to-side portacaval shunt" / "end-to-side portacaval shunt": Technical terms specifying the surgical technique used to connect the vessels.
  • The surgical team opted for an end-to-side portacaval shunt.

Variants and Related Words

• Surgical shunt: A general term for any artificially created bypass.
• Portosystemic shunt: A broader category of shunts that divert blood from the portal system to the systemic venous system, which includes a portacaval shunt as one type.
• Transjugular intrahepatic portosystemic shunt (TIPS): A less invasive, radiologically created shunt within the liver that serves a similar purpose.

Synonyms

• Portacaval anastomosis: A more technical synonym, where "anastomosis" means a surgical connection between two structures.
• Portal-systemic shunt (specific type): A synonym that highlights the function of connecting the portal and systemic venous systems.

Notes

• The "portacaval shunt" is a treatment for severe complications of liver cirrhosis, such as uncontrollable bleeding from esophageal varices or refractory ascites, by reducing high pressure in the portal vein.
• It is a historic and major open surgical procedure, largely supplanted in many cases by the less invasive TIPS procedure.

Học thuật

Noun

1. shunt that is created surgically between the portal vein and the inferior vena cava so that blood from the abdominal organs can bypass the liver