Pathogenesis 2 Pharmacokinetics of barbiturates Barbiturates with low lipid solubility are excreted in the unchanged form by the kidneys. ie phenobarbita|(苯巴比妥) Barbiturates with high lipid solubility are metabolized to more polar compounds in the liver before being excreted via the kidneys. ie thiopental(硫喷妥)Pathogenesis 2、Pharmacokinetics of Barbiturates ◼ Barbiturates with low lipid solubility are excreted in the unchanged form by the kidneys. ie phenobarbital（苯巴比妥）. ◼ Barbiturates with high lipid solubility are metabolized to more polar compounds in the liver before being excreted via the kidneys. ie thiopental （硫喷妥）