Studies on coagulating time and serum bactericidal action of arterial and venous blood. Part 1. Experimental studies on the difference of coagulating time between the arterial and venous blood in dogs

1) The coagulating time of the blood of the carotid artery is shorter than that of the jugular vein. 2) The coagulating time of the blood of the femoral artery is shorter than that of the femoral vein. 3) The coagulating time of the blood of the pulmonary artery is shorter than that of the pulmonaly vein. 4) Schmidt's theory, which ascribes the difference of the coagulating time between the arterial and venous blood to the difference of the amount of O(2) and CO(2), is not thought to be perfect. 5) The coagulating time of the blood of the thoracic interior vena cava is much shorter than that of the femoral vein. 6) The coagulating time of the blood of the hepatic vein and the portal vein is shorter than that of any other artery or vein. The coagulating time of the hepatic venous blood is a little shorter than that of the portal venous blood. 7) Among the three main roots of the portal vein, the coagulating time of the lienal venous blood is the shortest, then the superior mesenteric venous blood and the longest is that of the interior mesenteric venous blood. 8) The coagulaing time of the blood of the portal vein is shorter than those of its roots, viz. the lienal, superior and inferior mesenteric veins. 9) The fact that the blood coagulating time of the thoracic inferior vena cava is much shorter than that of the femoral vein is accounted for the inflow of the blood from the hepatic vein. 10) The fact that the blood coagulating time of the pulmonary vein is longer than that of the thoracic inferior vena cava is ascribed to the blood inflow from the jugular vein. 11) The coagulating time of the blood is prolonged after its perfusion through various organs except those of the hepato-portal system.