What are the characteristic signs of poisoning with salts of heavy metals and arsenic and the procedure for providing first aid.

Organic and inorganic compounds of heavy metals and arsenic are used in many industries as raw materials or for other purposes. These compounds are also used in agriculture. Arsenic and some heavy metals (copper, mercury, bismuth) are part of various drugs. They are also used as antiseptics.
Compounds of heavy metals and arsenic can enter the human body through the mouth, respiratory system, skin and mucous membranes. In acute poisoning, the gastrointestinal tract, nervous system, kidneys, and respiratory organs can be affected.
Signs of poisoning through the gastrointestinal tract are a metallic taste in the mouth, nausea, pain when swallowing, in the esophagus and abdomen, vomiting, redness of the pharynx and pharynx. In severe cases, diarrhea, gastric and intestinal bleeding are observed. In addition, in case of poisoning with mercury and lead compounds, the victim develops a characteristic dark border on the gums, which begin to bleed and the teeth become loose. Nausea and vomiting occur during poisoning by any compounds of heavy metals and arsenic. Vomit in case of copper poisoning has a blue or bluish-green color, and in case of arsenic poisoning it is green.
In case of poisoning with arsenic compounds, damage to the nervous system is possible. In this case, the victim experiences excitement, he may have cramps of the upper and lower extremities.

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