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The inferior vena cava is a large vein that carries the deoxygenated blood from the lower and middle body into the right atrium of the heart. It is formed by the joining of the right and the left common iliac veins , usually at the level of the fifth lumbar vertebra .
The middle hepatic vein drains the central portion of the liver, draining segments IV, V, and VIII. The middle hepatic vein most often joins the left hepatic vein to form a short common trunk to drain jointly into the inferior vena cava; the middle hepatic vein drains into the inferior vena cava as a separate vessel in less than 10% of individuals.
The caudate lobe of the liver is bounded below by the porta hepatis, on the right by the fossa for the inferior vena cava, and on the left by the fossa for the ductus venosus and the physiological division of the liver, called the ligamentum venosum. It looks backward, being nearly vertical in position; it is longer from above downward than ...
The hepatic vein subsequently drains into the inferior vena cava. The hepatic artery provides 30 to 40% of the oxygen to the liver, while only accounting for 25% of the total liver blood flow. The rest comes from the partially deoxygenated blood from the portal vein. The liver consumes about 20% of the total body oxygen when at rest.
It may receive its supply from both the right and the left branches of portal vein. It contains one or more hepatic veins which drain directly into the inferior vena cava (IVC). [1] The caudate lobe is a separate structure which receives blood flow from both the right- and left-sided vascular branches. [5] [6]
The ductus venosus carries blood from the left portal vein to the left hepatic vein and then to the inferior vena cava, allowing placental blood to bypass the liver. In the fetus, the liver does not perform the normal digestive processes and filtration of the infant liver because nutrients are received directly from the mother via the placenta .
The division divides the liver into two planes. It extends from the middle hepatic vein (or the inferior vena cava) to the middle of the gallbladder. [1] [2]Using Couinaud's classification system, segments two, three, and both parts of four are on the left side of the division, while segments five, six, seven, and eight are on the right.
An atriocaval shunt (ACS) is an intraoperative surgical shunt between the atrium of the heart and the inferior vena cava.It is used during the repair of larger juxtahepatic (next to the liver) vascular injuries such as an injury to the local vena cava.