MECHANISM OF HYPOTENSION OCCURRING DURING HEMODIALYSIS.

Abstract

Before, during and after dialysisinduced hypotension, the changes in blood volume and hemodynamic parameters were measured, together with the plasma cetecholamine levels and water evaporation rate from the skin.
The results indicated that at the time of hypotension, there was a decrease in venous retuen to the right atrium due to relocation of circulating blood volume. Moreover, it was shown that the decrease in the venous return was caused by the acute failure of the sympathetic nervous system compensating for the reduction in vascular wall tension due to some unknown factor, and the localization of the sympathetic nervous system failure was not the afferent pathway.