Definition Hydroxyethyl starch (hetastarch) is a colloid solution available in the United States as a 6% solution in 0.9% NaCl (Hespan), as well as Hextend. The larger molecules (the range is from 10,000 to 2 million daltons) of Hespan are degraded by amylase. Hydroxyethyl starch is stored in the reticuloendothelial system for hours and is […]