What should be done as soon as possible when toxic gas poisoning is discovered?

When a patient is in a toxic or harmful gas environment and exhibits symptoms of poisoning, the patient should be quickly removed from the relevant toxic environment while ensuring his own safety. For example, when a rescuer enters a toxic environment, You should wear a mask before entering, or cover your mouth with a wet towel or wear a gas mask, etc., and protect yourself before entering for rescue. When the patient's heart and breathing have stopped after leaving the toxic environment, cardiopulmonary resuscitation should be performed immediately to save the patient's life as much as possible. If the patient has severe difficulty breathing, attention should be paid to protecting the airway and avoiding suffocation as much as possible. If conditions permit, glucocorticoids, inhaled airway-expanding drugs, etc. can be given. In emergencies, cricothyroid membrane puncture or tracheal intubation can be given to establish an artificial airway. In short, relevant symptomatic treatment should be given under the premise of ensuring that the respiratory and circulatory functions are relatively stable, such as giving appropriate sedation to patients, and cooling down treatment for patients with high fever. At the same time, we should actively contact the doctor for medical treatment, and further adopt relevant detoxification drugs and corresponding symptomatic and supportive treatment based on the toxicological characteristics of the gas inhaled by the patient.