Which of the following conditions is associated with maximum hearing loss?
Maximum hearing loss occur when there is ossicular interruption with intact tympanic membrane (54dB). Ossicular interruption with perforation result in 38dB hearing loss, hearing loss in ottitis media with effusion averages about 26-30 dB. Paial or complete fixation of the stapes results in conductive hearing loss that ranges from 5dB to 60dB.
Otitis media with effusion
Paial fixation of the stapes footplate
Ossicular disruption with intact tympanic membrane
Disruption of malleus and incus as well tympanic membrane