准确客观定量地测试心肺功能,通常需要昂贵的设备和复杂的试验。临床上普遍开展、广泛普及是不现实的,尤其是目前尚处于发展中的我国更是如此。1976年McGavin等[1]首先将12min步行测验用于评估慢性阻塞性肺疾病(COPD)患者功能障碍情况,其后不久Guyatt等[2]和Lipkin等[3]将这种 Accurate, objective and quantitative testing of cardiopulmonary function usually requires expensive equipment and complex tests. It is unrealistic to carry out the disease widely and extensively in clinical practice, especially in our country, which is still under development. In 1976, McGavin et al [1] first used a 12-minute walking test to assess dysfunction in patients with chronic obstructive pulmonary disease (COPD). Shortly thereafter, Guyatt et al [2] and Lipkin et al [3]