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Physiology of hearing and hearing loss

Question
28 out of 39
 

Conductive hearing loss is seen in all of the following except: [AIPG 12]



A Otosclerosis

B Otitis media with effusion

C Endolymphatic hydrops

D Suppurative otitis media

Ans. C Endolymphatic hydrops Ref. 6th/ed p 30 Table 5. 1 and 5.2

Endolymphatic hydrops meniers disease leads to SNHL and not conductive hearing loss. All the rest can lead to conductive heaving loss Congenital causes of conductive hearing loss

Mental atresia

Fixation of stapes footplate

Fixation of malleus head

Ossicular discontinuity

Congenital cholesteatoma

Acquired causes of conductive hearing 1055

External ear Any obstruction in the ear canal, e.g. wax, foreign body, furncle, acute inflammatory swelling, being or malignant tumor or atresia of canal.

Middle ear (a) Perforation of tympanic membrane, traumatic or infective

(b) Fluid in the middle ear, e.g. acute otitis media, serous otitis media or haernotyrnpanurn

(c) Mass in middle ear, e.g. benign or malignant tumour

(d) Disruption of ossicles, e.g. trauma to ossicular chain, chronic suppurative otitis media, cholesteatoma

(e) Fixation of ossicles, e.g. otosclerosis, tympanosclerosis, adhesive otitis media

(f) Eustachian tube blockage, e.g. retracted tympanic membrane, serous otitis mediA.

Physiology of hearing and hearing loss Flashcard List

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