Symptoms of hydrogen sulfide poisoning?

summary

Hydrogen sulfide is a colorless gas with irritation and asphyxiation. The low concentration of contact can only stimulate the local respiratory tract and eyes, but the systemic effect is more obvious when the concentration is high, showing symptoms of central nervous system and asphyxia. Hydrogen sulfide has a rotten egg like odor, but its extremely high concentration will soon lead to olfactory fatigue. Symptoms of hydrogen sulfide poisoning? Let's talk about it

Symptoms of hydrogen sulfide poisoning?

Mild poisoning is mainly irritation symptoms, such as tears, eye tingling, runny nose, burning sensation in throat, or accompanied by headache, dizziness, fatigue, nausea and other symptoms. Examination showed conjunctival congestion and dry rales in the lung, which could be recovered in a short time after contact.

After exposure to high concentration of hydrogen sulfide, the symptoms were encephalopathy, headache, dizziness, irritability, faltering gait, irritability, blurred consciousness, delirium, epileptic convulsions, generalized tonic clonic seizures, etc; Coma may occur suddenly; It can also cause dyspnea or cardiac arrest after respiratory arrest. Fundus examination showed that a few cases had optic nerve papilledema. Some cases may be accompanied by pulmonary edema. The symptoms of encephalopathy often appear earlier than those of respiratory tract. Chest X-ray showed enhanced lung markings or patchy shadows.

Shock like death may occur after exposure to extremely high concentration of hydrogen sulfide, i.e. respiratory arrest within a few seconds or minutes after exposure, and cardiac arrest after a few minutes; Can also immediately or within a few minutes coma, and respiratory arrest and death. Death can occur without alertness. When the smell of hydrogen sulfide is detected, the sense of smell can be lost immediately. In a few cases, the disgusting sweet smell can be smelled immediately before coma. Before death, there is no premonitory symptoms, but deep and fast breathing can appear first, and then stop breathing.

matters needing attention

On site rescue is very important, because of the high concentration of hydrogen sulfide in the air, it often causes many electric shock like deaths at the scene. If it can be rescued in time, it can reduce the mortality, reduce the number of transferred patients, and reduce the condition. The patient should leave the scene immediately to a place with fresh air. If possible, oxygen inhalation should be given immediately. The rescuers should have the knowledge of self rescue and mutual rescue to prevent the rescuers from poisoning themselves after entering the scene.