Chronic obstructive pulmonary disease (COPD) is a common disease with an estimated global prevalence of 11.7%, affecting almost 400 million people around the world.¹ In the United States, approximately 14% of adults 40 to 79 years of age have COPD.² Although the prevalence of different stages of COPD as defined by the Global Initiative for Chronic Obstructive Lung Disease (GOLD)³ varies among different countries,⁴ early-stage COPD — stage 1 disease, a facet of which is a forced expiratory volume in 1 second (FEV₁) of 80% or more of the predicted value, and stage 2 disease, which includes an FEV₁ of . . .

中文翻译：

---

早期COPD的药物治疗

慢性阻塞性肺疾病（COPD）是一种常见疾病，估计全球患病率为11.7％，影响了全球近4亿人。¹在美国，40至79岁的成年人中约有14％患有COPD。²尽管全球慢性阻塞性肺疾病倡议（GOLD）³定义的COPD不同阶段的患病率在不同国家之间有所差异，但^4种COPD早期阶段-1期疾病，其多面性是强制性呼气量1预测值的80％或更高的第二（FEV ₁）和第二阶段疾病，其中FEV ₁为。。。