Oxygen desaturation should be administered first if available, and if at home then 120 should be called immediately to send the patient to the hospital for oxygen administration, and at the same time complete the relevant examinations to clarify the cause of oxygen desaturation and correct it in time.
There are many reasons for low oxygen saturation, first of all, we should ask the patient what is the past history of chronic obstructive pulmonary disease, severe asthma, lung infection, pleural effusion, pulmonary embolism, heart attack, etc. can lead to oxygen saturation reduction.
Normal value of oxygen saturation is generally greater than 95%, such as patients with low oxygen saturation also need to improve the blood gas analysis, to clarify the existence of respiratory failure, such as the existence of respiratory failure also need to determine the type of respiratory failure, such as partial pressure of oxygen is less than 60mmHg, carbon dioxide partial pressure is normal or reduced, can be judged as type Ⅰ expiratory failure; such as partial pressure of oxygen is less than 60mmHg, carbon dioxide partial pressure is greater than 50mmHg, can be judged as type Ⅱ expiratory failure. If the partial pressure of oxygen is less than 60mmHg and the partial pressure of carbon dioxide is more than 50mmHg, then it can be judged as type II expiratory failure.
Type I expiratory failure is simple hypoxemia, which can be improved by oxygenation and treatment of the primary disease at the same time, while type II expiratory failure has carbon dioxide retention in addition to hypoxemia, which needs to be treated with a ventilator to improve ventilation if necessary.
To summarize, there are many reasons for low oxygen saturation, such as the patient is not in the hospital should first call 120, 120 to come before the home if there is oxygen can be oxygen, to the hospital to improve the relevant examination, the doctor will give appropriate treatment.