Which of the following is not a cause of conductive hearing loss-
CSOM
Otosclerosis
Presbycusis
Serous otitis media
Ans. is 'c' i.e., Presbycusis Causes of conductive deafnessCongenital causeso Meatal atresiao Fixation of stapes footplateo Fixation of malleus heado Ossicular discontinuityo Congenital cholesteatomaAcquired causeso External ear:# Any obstruction in the ear canal, e.g. wax, foreign body, furuncle, acute inflammatory swelling, tumor, atresiao Middle ear :# Perforation of tympanic membrane (traumatic or infective)# Fluid in middle ear (ASOM, serous otitis media or haemotympanum)# Mass in middle ear (tumors)# Disruption of ossicles (Trauma, CSOM, cholesteatoma)# Fixation of ossicles (otosclerosis, tympanosclerosis, adhesive otitis media)# Eustachian tube blockage (retracted tympanic membrane, serous otitis media)
Hearing Loss