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1.慢性支气管炎主要病理变化之一是粘膜上皮的纤毛发生粘连、倒伏甚至脱落;粘液腺肥大、增生,粘液分泌增多,加之纤毛运动障碍,粘液和炎性渗出物刺激,临床出现咳嗽、咳痰,痰呈白色粘液性。病理变化之二是由于炎症反复发作而引起支气管壁及其周围炎,导致小、细支气管变形扭曲、管腔狭窄,因此粘液及炎性渗出物易形成粘液栓,咳粘稠脓性痰,而且不易咳出;由于炎症、粘液栓刺激管壁平滑肌痉挛,病人出现呼气性呼吸困难,肺满布哮鸣音及罗音。
1. Chronic bronchitis is one of the main pathological changes mucosal epithelial cilia adhesion, lodging or even fall off; mucus gland hypertrophy, hyperplasia, increased mucus secretion, combined with ciliary movement disorders, mucus and inflammatory exudate stimulation, clinical cough, Phlegm, sputum was white mucus. Pathological changes of the second is due to repeated episodes of inflammation caused by the bronchial wall and its surrounding inflammation, resulting in small, fine bronchial deformation distortions, lumen stenosis, mucus and inflammatory exudate easy to form mucus plug, cough sticky purulent sputum, But not easy to cough; due to inflammation, mucus plug stimulate smooth muscle wall spasm, the patient appeared exhaled breathlessness, lung full of wheeze and rales.