美国国立心、肺和血液研究所最近已开始了一项多中心研究工作,目的在于预防慢性阻塞性肺疾患(COPD)的发生,通过早期干预,观察对有发生COPD 的高危人群,能否减慢其肺功能的衰退以及减少肺部的患病率。参加试验共6000人,年龄35～59岁,均为吸烟者,根据肺功能的测定结果,有发生COPD 的高度危险性。先对参加者作三项筛选试验以 The National Center for Heart, Lung, and Blood Medicine recently started a multicenter study aimed at preventing the development of chronic obstructive pulmonary disease (COPD) through early intervention and observing whether high-risk COPD patients can be reduced Slow down its decline in lung function and reduce the prevalence of lung disease. A total of 6000 people participated in the trial, aged 35 to 59 years old, are smokers, according to the determination of pulmonary function, there is a high risk of developing COPD. Make three screening tests for participants first