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慢性中耳炎也分为卡他性与化脓性两种。 (一)慢性卡他性中耳炎婴幼儿因症状不明显或不会诉说,多不引起注意。年龄较大儿童可自诉听力减退、耳鸣、自听增强及耳闷等。检查可见鼓膜有不同程度的内陷、增厚、萎缩、粘连、钙质沉着等。听力检查属导音性障碍。 (二)慢性化脓性中耳炎慢性化脓性中耳炎,是儿童常见的疾病之一,易反复发作或迁延甚久,有时危及生命,农村更为常见。慢性化脓性中耳炎分类方法颇多。按病变位置和范围可分为:①咽鼓管鼓室型。病变由咽鼓管传来,限于咽鼓管及鼓室,不侵犯乳突。鼓膜穿孔多为中央性,或在前下方或在后下方。②鼓隐窝鼓窦型。病变
Chronic otitis media is also divided into catarrhal and suppurative two. (A) chronic catarrhal otitis media Infants and young children because of the symptoms are not obvious or do not tell, do not draw much attention. Older children may be self-prosecution hearing loss, tinnitus, self-listening enhancement and ear boredom. Check the eardrum there are different degrees of retraction, thickening, atrophy, adhesions, calcifications and so on. Hearing test is an audio-visual disorder. (B) chronic suppurative otitis media Chronic suppurative otitis media is one of the common diseases in children, easy to recurrent or prolonged delay, and sometimes life-threatening, rural areas are more common. Chronic suppurative otitis media classification many ways. According to the location and extent of lesions can be divided into: ① eustachian tube tympanic cavity type. Eustachian tube disease came from, limited to the eustachian tube and tympanic cavity, does not violate the papillae. Tympanic membrane perforation mostly central, or in front of the bottom or below the bottom. ② drum rectal sinus sinus. Lesions