COPD高危人群鉴于目前临床上COPD存在明显诊断不足的倾向,因此应特别强调对本病的诊断意识,目前认为以下情况应考虑到COPD的可能性。①年龄大于40岁;②具有COPD家族史;③出生时低体重(2.5kg);④儿童时期反复发生下呼吸道感染(支气管炎、肺炎);⑤长期重度吸烟(吸烟年龄20年,每 High-risk COPD population Given the current clinical diagnosis of COPD there is a clear tendency to underestimate, it should be particularly emphasized the diagnosis of the disease awareness, the current situation that the following should consider the possibility of COPD. ① older than 40 years of age; ② family history of COPD; ③ low birth weight (2.5kg); ④ childhood respiratory tract infections (bronchitis, pneumonia); ⑤ long-term heavy smoking