化脓性中耳炎,临床分为急性和慢性两个阶段。下面谈谈它们的临床表现和怎样防治。解剖:中耳是一个小腔,内有传导声音的三块听小骨,此腔借鼓膜与外耳道相隔,向后经鼓窦可到乳突蜂房,向前下经细长的耳咽管通到鼻咽部,耳咽管是正常人中耳与外界的唯一通道,中耳与外界的气压平衡即依它而维持。急性中耳炎的病因:正常情况下耳咽管是关 Suppurative otitis media, clinical divided into two stages of acute and chronic. Here to talk about their clinical manifestations and how to prevent. Anatomy: the middle ear is a small cavity, there are three auditory ossicles of the conductive voice, the cavity by the tympanic membrane and the external auditory canal separated by the posterior sinus can be to mast cell, forward through the slender eustachian tube to the nasopharynx Department, the eustachian tube is the normal human middle ear and the only channel, the pressure balance of the middle ear and the outside world that is maintained by it. Causes of acute otitis media: Eustachian tube is normally closed