[State of the microcirculatory bed of the mesentery in experimental dehydration].

The results of a complex functional-morphological analysis on the state of the mesentric microcirculatory bed have demonstrated a peculiar dynamics in increasing changes of its blood and lymphatic segments. Their degree depends on the stage of dehydration. On the 3d day, the changes revealed are not great and are of redistributive character. On the 6th day dehydration aquires the maximal intensity of changes in vessels and hemodynamics. By the 10th day, maximal level of vascular, intravascular and hemodynamic disorders is evident. Comparing these data and the results of investigations on intracellular and extracellular ion contents, it is possible to suggest a definite staged water elimination from the main depots of the organism. The reserves of extracellular water section are the first to be mobilized at the expense of its interstitial and transcellular links. On the 6th day of the experiment maximal intensity of blood and lymphatic dehydration is noted. Final stages of dehydration are characterized by a pronounced cellular dehydration.