【文章內(nèi)容簡介】
and air condition. :無重振。 :鼓室功能曲線異常。 :閾值升高、潛伏期延長。 12 Conductive loss 傳導(dǎo)性耳聾 病 因 外耳道疾病 The external ear disease: ?耳部畸形 Congenital malformations ?耵聹栓塞 Impacted earwax ?外耳道炎 Inflammation of the ear canal 13 Conductive loss 傳導(dǎo)性耳聾 病 因 常見的中耳疾病 The middle ear disease: ? 急性中耳炎 Acute otitis media ? 慢性中耳炎 Chronic otitis media ? 鼓膜穿孔 Perforated eardrum ? 耳硬化癥 Otosclerosis ? 聽骨鏈中斷 Interruption of the ossicular chain ? 咽鼓管功能異常 Dysfunction of the Eustachian tube ? 腫瘤或膽脂瘤 Exostoses and osteomas 14 Sensorineural loss 感音神經(jīng)性耳聾 發(fā)病部位:耳蝸、聽神經(jīng)、中樞 15 10 0 10 20 30 40 50 60 70 80 90 100 110 120 125 250 500 1500 3000 6000 1000 2022 4000 8000 R Air L Air x O 感音神經(jīng)性聾 Sensorineural loss 聽力圖特點(diǎn) O x x O O O O O xO x x x x R Bone L Bone 感音神經(jīng)性聾 (SENSORY NEURAL HEARING LOSS SNHL) ?氣導(dǎo)異常 ?骨導(dǎo)異常 ?氣骨導(dǎo)間距小于等于 5dBHL (ABG≤5dBHL) ?見于內(nèi)耳及聽中樞疾患 16 Sensorineural hearing loss感音神經(jīng)性耳聾 ? 特點(diǎn): 。 Air conductive decline ,晚期低頻也下降。 High frequency decline at first time, then both decline. There is no a distance show between the bone condi