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Radiology, Vol 132, 331-339, Copyright © 1979 by Radiological Society of North America

ARTICLES

Effects of radiopaque contrast media on the microcirculation of the rabbit omentum

B Endrich, J Ring and M Intaglietta

Histamine concentration in plasma was measured and the microvasculature studied after injections of radiographic contrast materials and hypertonic NaCl solutions. Only 8 ml/kg of contrast material caused a prolonged decrease in systemic and microvascular pressure and a drop in erythrocyte velocity. Concomitantly, a significant increase in plasma histamine concentration was observed after two minutes. Signs of cellular defects and constriction of arterioles were noted after several minutes. These findings suggest that the hyperosmolality of the radiopaque materials tested could initiate the microhemodynamic reactions but is not responsible for cellular and endothelial damage in the microcirculation of the rabbit omentum.




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Copyright © 1979 by the Radiological Society of North America.