Transcription of Deafness and Tinnitus Ear symptoms Hearing loss …
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Deafness and Tinnitus Ear symptoms Hearing loss …
Notes on ENT Author Liz Tatman 1 Deafness and Tinnitus Ear symptoms Hearing loss otalgia Tinnitus vertigo Otorrhoea Deafness Causes: Conductive: o External ear - atresia, meatal obstruction wax, foreign body, infection. o Middle ear congenital anomaly, otitis media, cholesteatoma, ototsclerosis, neoplasia. Sensory neural: o Cochlear congenital, presbycusis, labyrinthitis, otosclerosis, Meniere s disease. o Retro-cochlear psychogenic, meningitis, MS, acoustic neuroma. Conductive Deafness sound doesn t reach cochlea, problems with middle or outer ear. Pure tone audiograms Subjective test of Hearing . Documents level at which patient can hear sounds of different frequencies normal is levels better than 25dB for 4 frequencies. Can test air or bone conduction (mask other ear). Symbols: Right ear 0 Left ear X Bone conduction right ear [ Bone conduction left ear ] Tympanometry Measure compliance of ear drum. Calculate middle ear pressure (sound is transmitted best when pressures are equal).
Notes on ENT Author Liz Tatman www.askdoctorclarke.com 1 Deafness and Tinnitus Ear symptoms Hearing loss Otalgia Tinnitus Vertigo Otorrhoea Deafness
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