露天燃烧树叶会使附近居民尤其是慢性肺疾病患者产生呼吸道症状。但露天燃烧树叶对哮喘的影响还缺乏科学的研究。受试者为7例轻重不等的哮喘患者及3例正常对照者。在同一天环境条件相同的情况下,两组受试者均先后于露天接触和未接触燃烧树叶的环境下行走0.8045km,用肺量计测量行走前后的肺功能情况。 Open burning leaves can cause respiratory symptoms in nearby residents, especially those with chronic lung disease. But the impact of open burning leaves on asthma is still lack of scientific research. Subjects were seven asthma patients of varying severity and three normal controls. Under the same environmental conditions on the same day, both groups of patients walked 0.8045km under open-air exposure and without contact with burning leaves, and measured the pulmonary function before and after walking with a spirometer.