Which of the following test assesses resistance in middle ear -
Pure tone audiometry
Impedance audiometry
Caloric test
BERA (Brainstem evoked response audiometry)
Impedance Audiometry
1. It is an objective test for hearingQ
2. It is very useful in children for assessing the hearing loss. Q
3. It consists of tympanometry and acoustic reflex
Tympanometry is a measure of the condition of the middle ear at the level of tympanic membrane.
NOTE: 

For infants and neonates, tympanograms obtained using a 220 Hz probe may erroneously appear normal.

∴ a higher frequency probe tone (660 or 1000 Hz) must be used