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急性化脓性中耳炎为中耳粘膜的急性化脓性炎症,好发于儿童。原因:①咽鼓管短、宽、平,位置较低,婴儿乎卧喂养或溢乳时,致病菌经咽鼓管进入中耳腔,引起中耳炎。②婴幼儿生理特点是身体抗病能力差,免疫力不强,易患流行病、急性传染病,可并发化脓性中耳炎。③小儿中耳粘膜上皮的粘液层缺少溶菌酶,局部抗感染的防御机能弱,易患中耳化脓。④小儿病理的特点是,中耳组织娇嫩,血管和淋巴组织丰富,感染后易发生充血、水肿、组织坏死、咽鼓管
Acute suppurative otitis media is acute suppurative inflammation of the middle ear mucosa, occurs in children. Cause: ① Eustachian tube short, wide, flat, lower position, the baby lying almost feeding or galactorrhea, pathogenic bacteria through the eustachian tube into the middle ear cavity, causing otitis media. ② physical characteristics of infants and young children is poor resistance to disease, immunity is not strong, susceptible to epidemics, acute infectious diseases, can be complicated suppurative otitis media. ③ pediatric middle ear mucosal epithelial mucus layer lack of lysozyme, partial anti-infective defense function is weak, susceptible to purulent middle ear. ④ pediatric pathology is characterized by delicate middle ear tissue, blood vessels and lymphoid tissue rich, prone to congestion after infection, edema, tissue necrosis, Eustachian tube