1. How is gas poisoning caused?
The main components of coal gas are carbon monoxide, hydrogen and alkanes. In daily life, when using coal stove for heating and gas cooking in a closed room, gas leakage often occurs due to poor ventilation, air leakage in pipes, loose switch and other reasons. Carbon-containing substances in gas will produce a large amount of carbon monoxide without complete combustion, which will cause carbon monoxide poisoning, which is what we usually call gas poisoning. After carbon monoxide enters the body, it competes with oxygen to bind hemoglobin. The binding capacity of carbon monoxide and hemoglobin is 240 times that of oxygen and hemoglobin, so it is easy to form carbon hemoglobin and difficult to dissociate, which reduces the oxygen-carrying function of the body's blood, leads to tissue ischemia and hypoxia, and induces hypoxemia.
Second, what are the symptoms of gas poisoning
Carbon monoxide is a colorless and odorless gas, so it is difficult to find it when it is dispersed in the air. The degree of carbon monoxide poisoning is mainly positively related to the level of carbon monoxide in the poisoning environment and the contact time with patients. The early symptoms of carbon monoxide poisoning are headache, dizziness, nausea, vomiting and fatigue; If the poisoning time is a little longer, coma symptoms may appear, and the skin and mucosa are cherry red; Long-term poisoning or short-term inhalation of high-concentration carbon monoxide will cause deep coma, loss of reflex, incontinence, blood pressure drop and even death.
At present, there is no specific detoxification method for carbon monoxide poisoning, but hyperbaric oxygen therapy can quickly reduce the level of carbon oxyhemoglobin, reduce the damage of carbon monoxide to tissues, reduce the mortality of patients with carbon monoxide poisoning, and alleviate the cognitive impairment after carbon monoxide poisoning.