Chronic obstructive pulmonary disease usually starts slowly, has a long course, and is mostly asymptomatic in the early stages. If acute exacerbation, accelerated respiratory rate, expiratory failure will cause low blood oxygen.
1. Acute exacerbation: if the patient is cold or infected, it can lead to aggravation of the condition, cough, cough sputum, dyspnea, increased sputum, yellow sputum, accelerated respiratory rate, and low blood oxygen can occur.
2. Respiratory failure: due to the gradual aggravation of the condition, resulting in pulmonary ventilation, gas exchange obstacles, further causing acute respiratory failure, resulting in dyspnea, cyanosis, and even confusion, mania, coma, convulsions and other symptoms, arterial blood gas analysis shows low blood oxygen.
Patients with chronic obstructive pulmonary disease should actively prevent and control respiratory infections, strengthen exercise, enhance physical fitness, regularly monitor lung function, and actively prevent exacerbation of the disease.