百草枯(paraquat,PQ)为接触性除草剂,因其除草效果良好、土壤残留毒性小,而被广泛应用于农业生产。但人体一旦误服或口服百草枯中毒,因其致死剂量小,组织扩散性强等特点,药物进入体内后可迅速分布至体内多个脏器,严重者可出现多器官功能损害,其中肺纤维化损伤,导致严重的呼吸衰 Paraquat (PQ) is a contact herbicide, which has been widely used in agricultural production because of its good herbicidal effect and small residue toxicity. However, once the human body is mistaken or oral paraquat poisoning, because of its lethal dose, the proliferation of organizations and other characteristics of the drug quickly into the body can be distributed to multiple organs, multiple organ dysfunction may occur in severe cases, including pulmonary fibrosis Damage, leading to severe respiratory failure