Movement of the blood and changes in its electrical conductivity

Summary The electroconductivity of the blood changes with its flowing. This rise in the electroconductivity of citrated and defibrinated blood, as well as in the erythrocyte suspension follows the same law. The curves of the changes in electroconductivity of citrated and defibrinated blood, as well as of the erythrocyte suspension follows the same law. The curves of the changes in electroconductivity of these fluids differ only quantitatively. Blood plasma, as well as other ionic and colloidal solutions and hemolyzed blood do not change their resistance in flowing. The change of blood electroconductivity is caused by the presence of erythrocytes, the carriers of a negative charge, the value of which depends on their surface. The change in the electroconductivity depends on the frequency of the passed current, the number of erythrocytes in the blood, the protein colloidal and ionic content of the blood plasma. The change in the blood electroconductivity characterizes the velocity of blood flow in the vessels and may also denote the value of the charge of erythrocytes. The phenomenon of the change of the blood electroconductivity should be taken into consideration in analyzing the data obtained by the method of electroplethysmography.Presented by Active Member of the AMN SSSR P. S. Kupalov