Computation of Plasma Volume from ICG Dye Dilution Test and Estimating Movement of Body Fluid after Hepatic Resection

We often experienced the postoperative complications in the cases of the hepatoma because of the redistribution of the body fluid into the third space in patients with the liver cirrhosis. The fluid shifted to the third space was hardly understood and made the fluid management difficult. Using the indocyanine green (ICG) test, which was thought to be an index of the liver function, we calculated the plasma volume. We calculated pre- and post-operative plasma volume by the ICG test in 46 patients who underwent hepatectomy. We classified the patients into four groups based on the relationship between the water balance during the operation and the plasma volume by ICG. The group I was though to be the high risk group of the postoperative hypoxia and ascites, in which postoperatively the plasma volume decreased in spite of positive water balance (the water balance during the operation ≧8 ml/kg/h). The ICG test is now considered to be a new index of the fluid management after hepatectomy, in addition to the liver function test