Symptoms of formaldehyde poisoning
Mild poisoning: obvious irritation of mucous membrane of eyes and upper
respiratory tract. The main manifestations are conjunctival congestion,
redness and swelling, dyspnea, heavy breathing sound, hoarseness of
throat, speech or dry, dark dumb or greasy. The poisoned person can also
feel his breathing sound bold. Another specific symptom of mild
formaldehyde poisoning is one to two degrees of throat edema.
Moderate poisoning: cough, expectoration, chest distress, dyspnea and
dry and wet percussion sound. When chest X-ray is taken, the texture of
the lung is substantiated and becomes scattered dots or flake shadow,
which is the medical type of bronchopneumonia; the throat edema is
increased to the third grade. Blood gas analysis is accompanied by mild
to moderate hypoxemia.
重度中毒：肺部及喉部情况出现恶化，出现肺水肿流水槽模具 u型槽模具 电缆槽模具 隔离墩钢模具 护坡砖模具 钢制闸门 螺杆式启闭机 卷扬式启闭机与四度喉水肿的病症，血气分析亦随之严重，为重度低氧血症。
Severe poisoning: the condition of the lung and throat worsens, and
pulmonary edema and fourth degree laryngeal edema appear. The blood gas
analysis is also serious, which is severe hypoxemia.