Type of tympanogram seen in thick tympanic membrane condition is
**Core Concept**
A tympanogram is a graphical representation of the movement of the eardrum (tympanic membrane) and the conduction bones in response to pressure changes in the ear canal. In a thickened tympanic membrane, the tympanogram will reflect the increased stiffness and reduced mobility of the eardrum.
**Why the Correct Answer is Right**
In a thickened tympanic membrane, the eardrum becomes more rigid and less mobile, resulting in a decreased compliance. This is reflected in a tympanogram as a flat or "A" type curve, indicating a high compliance (low resistance) but with a reduced amplitude. The increased stiffness of the eardrum makes it more difficult to move, hence the flat curve.
**Why Each Wrong Option is Incorrect**
* **Option A:** This option is incorrect because it would describe a type of tympanogram seen in a perforated eardrum, not a thickened one.
* **Option B:** This option is incorrect because it would describe a type of tympanogram seen in ossicular discontinuity, not a thickened tympanic membrane.
* **Option D:** This option is incorrect because it would describe a type of tympanogram seen in middle ear effusion, not a thickened tympanic membrane.
**Clinical Pearl / High-Yield Fact**
Remember that a thickened tympanic membrane can be caused by chronic otitis media, otosclerosis, or other middle ear conditions, and can lead to conductive hearing loss.
**Correct Answer:** C.