Type Ad Tympanogram - Large Healed Perforation or ossicular discontinuity
Type As Tympanogram - Otosclerosis or ossicular chain fixation
Type A- Tympanogram - Normal
Type B - Air Bone Gaps are typical results of middle ear effusion or significant scarring of the eardrum.
Type C tympanogram - negative middle ear pressure or Retracted Tympanic membrane