MEASUREMENT OF THE BLOOD FLOW OF THE LIVER

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Abstract
The rate of flow of blood in the hepatic artery, portal vein and thoracic inferior vena cava was measured in a group of dogs by the thermostromuhr method. The abdominal inferior vena cava had previously been ligated. During pento-barbital Na anesthesia the usual flow ranged from 44.6-163 c.c. per min. in the hepatic artery, from 145-505 c.c. per min. in the portal vein, and from 252.4-620 c.c. per min. in the thoracic inferior vena cava. When total inflow and outflow of blood from the liver were measured, the values obtained were in close agreement. After recovery from ether anesthesia the usual flow in the portal vein of a group of dogs ranged from 206.5-473.9 c.c. per min., and from 368-507.5 c.c. per min. in the thoracic inferior vena cava. The calculated hepatic artery flow ranged from 33.6-65 c.c. per min. Low blood flow in the portal vein in 2 anesthetized dogs was accompanied by high blood flow in the hepatic artery. Simultaneous observations of inflow and outflow indicate that under certain conditions the liver may alternately store blood and discharge stored blood.

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