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慢性气管炎多由长期吸烟,或经常吸入刺激性气体或尘埃引起。这是一种以长期、反复加重感染为基础的慢性呼吸道疾病,病程长、病因复杂、顽固不易彻底治愈是其特点。慢性支气管炎为常见多发病,根据中国70年代全国6千多万人的普查,患病率为3.82%。随着年龄增长,患病率递增,50岁以上的患病率高达15%或更多。本病的流行与吸烟、地区和环境卫生等有密切关系:吸烟者患病率远高于不吸烟者;北方气候寒冷患病率高于南方;工矿地区大气污染严重,患病率高于一般城市。
Chronic bronchitis and more by long-term smoking, or frequent inhalation of irritating gases or dust caused. This is a long-term, repeated aggravating infection based on chronic respiratory diseases, long duration, complex causes, stubborn and not completely cure it is characterized. Chronic bronchitis is a common and frequently occurring disease. According to a survey of more than 60 million people in China in the 1970s, the prevalence was 3.82%. As you grow older, the prevalence increases, with prevalence rates up to 15% or more over the age of 50. The prevalence of this disease is closely related to smoking, area and environmental sanitation. The prevalence of smokers is much higher than that of non-smokers. The prevalence of cold in northern climate is higher than that of the south. The air pollution in industrial and mining areas is serious and the prevalence is higher than usual city.