How to scientifically treat COPD with oxygen?

1. All oxygen inhalation devices need to be connected with nasal ducts or nasal plugs, and then inserted into the patient's nostrils.

2. When inhaling oxygen, the greater the oxygen flow, the better. In some cases, high-flow oxygen inhalation is not good for patients.

Chronic obstructive pulmonary disease (COPD) should receive low-flow oxygen. Due to long-term carbon dioxide retention, central chemoreceptors adapt to the stimulation of carbon dioxide, while peripheral chemoreceptors adapt to hypoxia slowly.

At this time, breathing mainly depends on the stimulation of peripheral chemoreceptors by hypoxia. If the oxygen flow rate is too fast and the concentration is too high, this stimulation will be alleviated and respiratory depression will occur.

Extended data:

The diagnosis of COPD should be considered in patients with the following characteristics: chronic cough, expectoration, progressive dyspnea and contact history of COPD risk factors (even if there are no symptoms of dyspnea). Diagnosis requires lung function examination and bronchodilator.

fev 1/FVC & lt； 70% can confirm the existence of irreversible airflow blockage. According to the percentage of FEV 1 in the expected value, the functions are classified.

The pulmonary function of COPD is classified as grade I (mild).

FEV 1≥80% expected value; Grade II (moderate) 50% ≤ Fev 1

Grade Ⅲ (severe) 30% ≤ fev 1

Grade ⅳ (extremely severe) fev 1

Baidu encyclopedia-chronic obstructive pulmonary disease