[Changes in the water and electrolyte contents of human erythrocytes due to Visotrast 370 during I-V urography (author's transl)].

The effect of the contrast medium Visotrast 370 on the water content and volume of erythrocytes, and on the electrolyte levels of plasma and erythrocytes during I-V urography was examined. The measurements were carried out at one, ten and 30 minutes after injection. One minute after injection there was a significant reduction in the water content and volume of the erythrocytes. The levels of sodium and potassium ions in the plasma were reduced ten minutes after contrast injection, but increased in the erythrocytes. After 30 minutes, significant changes could no longer be demonstrated. Possible causes for these changes and their effects on other organs are discussed. Certain practical conclusions are drawn.