急性化脓性中耳炎课件_2.pptVIP

Acute Suppurative Otitis Media(ASOM)急性化脓性中耳炎 Guo Min The department of otorhinolaryngology Key words Mucosa 粘膜 Middle ear 中耳 Tympanic membrane (TM) 鼓膜 External acoustic canal 外耳道 Eustachian tube 咽鼓管 Malleus 锤骨 Hyperemia 充血 Swell , swollen 　　　　　　 肿胀　　　　　　 Obstruction 阻塞 Ear fullness 耳闷 Earache = ear pain = otalgia 耳痛 Hearing loss 耳聋 Tinnitus 耳鸣 Otoscopy 耳镜检查 Perforate 穿孔 Perforation Pus 脓 Retract 内陷 Retraction Bulge 膨胀 A sick and crying boy Earache High fever Caught a cold recently Tympanic membrane was uniformly red and bulged outwards Definition Acute suppurative otitis media ( ASOM) is an acute infection of the mucosa lining of the middle ear It occurs more easily in children and infants in winter and spring after upper respiratory infection Middle ear – conduct sound to inner ear Eustachian tube Function Regulate and equalize pressure in middle ear Prevent fluid from accumulating in middle ear Protect from the nasopharyngeal infection Regulate and equalize pressure in middle ear Prevent fluid from accumulating in middle ear Protect from the nasopharyngeal infection Tympanic membrane Tympanic membrane -- a pale grey, transparent membrane The infectious way Eustachian tube way Most important Because it is the only way that connected the middle ear to the nasopharynx In some cases organisms staying in nasopharynx can go through this way into the middle ear upper respiratory infection acute infectious diseases ( scarlatina 猩红热, measles 麻疹 and pertussis 百日咳) blow nose improperly swim or dive in dirty water some improper therapy Why are children and infants easier t