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渗出性中耳炎,又名卡他性中耳炎、浆液性中耳炎或分泌性中耳炎,尤多发生于小儿。其特点是:听力减退、中耳腔内有液体潴积,但无耳膜穿孔,不流脓流水。治疗不当可致中耳液体机化、听骨链纤维固定或耳膜纤维粘连,甚至重度和永久性耳聋。一、发病机制:主要为耳咽管阻塞及功能不良,不能正常调节中耳压力。中耳长期负压,毛细血管和淋巴管扩张,液体渗出;以及变态反应,中耳粘膜变性,腺体分泌增加,造成中耳腔液体潴留
Oozing otitis media, also known as catarrhal otitis media, serous otitis media or secretory otitis media, especially in children. It is characterized by: hearing loss, fluid accumulation in the middle ear cavity, but no eardrum perforation, no pus flow. Improper treatment can cause the middle ear fluid mechanization, ossicular fibrosis or eardrum fibroadenia, and even severe and permanent deafness. First, the pathogenesis: mainly for the obstruction and dysfunction of the ear pharynx, can not regulate the middle ear pressure. Long-term negative pressure in the middle ear, dilatation of capillaries and lymphatic vessels, fluid exudation; and allergy, degeneration of middle ear mucosa, increased secretion of glands, resulting in fluid retention in the middle ear cavity