The danger of paraquat is that it can cause local irritation as well as systemic poisoning symptoms, such as skin burns, pulmonary edema, liver necrosis, toxic myocardial damage, etc., with high mortality.
Paraquat is a quaternary ammonium herbicide, absorbed by the human body through various ways will cause poisoning symptoms. Harm is mainly manifested as local irritation and systemic toxicity, such as contact with the skin causing erythema and other burns damage, contact with eye pain, conjunctival congestion; systemic poisoning is manifested as multiple systemic damage symptoms, high mortality.
1. Local irritation symptoms:
(1) Skin contamination causes burning damage, erythema, necrosis and so on;
(2) Contact with fingernails causes shedding;
(3) Eye pain, tearing and conjunctival congestion caused by eye contact;
(4) Inhalation in the respiratory tract causing sore throat and irritating cough;
(5) Contact with the mouth causes corrosion and ulceration of the mucous membrane of the mouth and esophagus;
2. Systemic poisoning symptoms:
(1) Digestive system: it can cause nausea, vomiting, abdominal pain, jaundice, etc., and liver necrosis in severe cases;
(2) Urinary system: there will be frequent and painful urination, and acute renal failure in severe cases;
(3) Lung damage: there is no clear change in the early stage, with the prolongation of time will appear pulmonary fibrosis, manifested by gradually aggravated dyspnea, which will lead to extreme pain, and ultimately can die in dyspnea.
(4) Circulatory system: in severe cases, there may be a drop in blood pressure and cardiac arrhythmia.
(5) Nervous system: manifested as mental abnormality, drowsiness, convulsions, coma and so on.
Paraquat exposure leads to poisoning should be promptly to the emergency department of the hospital first aid, do not delay the time.