呼吸道和皮肤最易受有毒物质影响,特别是呼吸器官易受损伤,呼吸器官比较脆弱,因而职业性呼吸道疾病发病率增高并不惊奇。职业性呼吸器官损伤表现特征为①急性反应;②慢性炎症;③进行性纤维性变;④恶性变;⑤非特异性反应。急性反应呼吸器官损伤急性反应,可因接触活性物质或非 Respiratory tract and skin are the most susceptible to toxic substances, especially respiratory organs vulnerable, respiratory organs more vulnerable, so occupational respiratory disease increased incidence is not surprising. Occupational respiratory organ injury performance characteristics ① acute reaction; ② chronic inflammation; ③ progressive fibrosis; ④ malignant change; ⑤ non-specific reaction. Acute reactions Acute respiratory tract injury, may be due to contact with active substance or non-