Pure oxygen refers to 100% oxygen, which is harmless when inhaled in small quantities, but continuous inhalation may cause harm to various organ systems of the human body such as the eyes, lungs and brain.
1. Eye: Continuous inhalation of pure oxygen may cause damage to the cells and tissues of the eye, resulting in abnormal functioning, which may lead to retinal atrophy, extensive vascular obstruction and fibroblast infiltration, thus leading to retinal detachment and blindness.
2. Lungs: prolonged inhalation of pure oxygen may lead to changes in lung parenchyma, resulting in pulmonary fibrosis. High concentration of oxygen may lead to pulmonary atelectasis, resulting in accelerated respiration, retrosternal pain, etc., and in severe cases, it may lead to respiratory distress, cyanosis, coma, and even asphyxiation and death.
3. Brain: Continuous inhalation of pure oxygen will cause damage to brain cells and tissues, which will lead to irritability, hallucinations, hallucinations, muscle spasms, generalized convulsions, coma and so on.
Clinical usually use a continuous low concentration of oxygen, or a shorter period of higher concentration of oxygen inhalation, if there is an abnormality, you should consult a doctor in time.