Chronic bronchitis ( Definition Chronic nonspecific inflammation in mucosa and its peripheral tissues of trachia and bronchus
一 .Chronic bronchitis • (一) Definition Chronic nonspecific inflammation in mucosa and its peripheral tissues of trachia and bronchus
(二) Etiology 1. Smoking Epidemical information Pathological examination Effects of giving up smoking Animal experiment
（二）Etiology • 1.Smoking – Epidemical information – Pathological examination – Effects of giving up smoking – Animal experiment
(二) Etiology 2. airway infection Virus Bacteria Mycoplasma
（二）Etiology • 2.Airway infection – Virus – Bacteria – Mychoplasma
(二) Etiology 3. phy physical and chemical factors Air pollution Occupational contamination Indoor and outdoor fumes 4. Climate Cold weather Variation of atmospheric temperature
（二）Etiology • 3.physical and chemical factors – Air pollution – Occupational contamination – Indoor and outdoor fumes • 4.Climate – Cold weather – Variation of atmospheric temperature
(二) Etiology 5. Atopy 6. Immunological and defensive disturbance 7.Imbalance between sympathetic and parasympathetic nerves systems 8. Deficiency of vit c and a
（二）Etiology • 5.Atopy • 6.Immunological and defensive disturbance • 7.Imbalance between sympathetic and parasympathetic nerves systems • 8.Deficiency of Vit C and A