Wrestlers in both groups underwent audiologic examinations including pure tone audiometry and impedance audiometry
The candidates is thoroughly examined clinically in the ENT department by taking proper personal, family, drug history, and the history of exposure to loud sounds before evaluation by special investigation such as PTA, Impedance Audiometry
, Speech Audiometry, Free Field Audiometry, BERA and OAE.
Assessment of hearing in children demands special techniques which include behaviour audiometry, conditioning audiometry, otoacoustic emissions, impedance audiometry
and electric response audiometry.
With impedance audiometry
, a type B tympanogram was obtained from the right ear and a type A tympanogram from the left (figure 1,A).
Patients are then subjected to Impedance audiometry
to record Tympanogram and middle ear pressures.
The use of impedance audiometry
became popular in 1970, when the A-B-C tympanogram configuration system was described.
Patients with an intact tympanic membrane, when suspected of middle ear pathology, were subjected for Impedance Audiometry
; Patients showing either a Eustachian tube pathology- depicted by a "c" graph on impedance audiometry
, or, a Serous otitis media- depicted by a "b" graph were commonly designated as OME/SOM, for the sake of easy inclusion into the study.
Auditory evoked response and impedance audiometry
Pre -therapy audiological evaluation was done in the form of pure tone audiometry and emmittance audiometry which consists of impedance audiometry
and reflexometry using a 226Hz probe tone.
Although many methods like -behavioral audiometry, impedance audiometry
, respiratory and cardiac responses and crib movement systems are evaluated, BERA which yields information on threshold sensitivity of peripheral part of auditory apparatus and on conduction velocity in brainstem (4) is the satisfactory procedure which can be performed with ease in children.
is an essential tool to assess eustachian tube function (ETF).
For both test & control groups, a detailed medical history was obtained, and physical examinations including anterior rhinoscopy, posterior rhinoscopy, otoscopy, tuning fork tests, impedance audiometry
, pure tone audiometry, and speech audiometry, as indicated, were performed.