1. Selection of patients of CSOM with conductive deafness to undergo various types of Tympanoplasty surgeries.

2. To document hearing improvement after various types of Tympanoplasty surgeries in cases of CSOM by means of PTA.

Methods

A total of 50 cases of CSOM presented with hearing loss were compiled after applying the inclusion and exclusion criterias. All the cases underwent

detailed otoscopic and audiometric examination. All the patients were treated surgically and were followed up after 3 months. Descriptive and

inferential statistical analysis has been carried out in this study.

Results

Comparing the preop and 3 months postop PTA, significant AB gap closure was seen in 30(60%) patients, remained same in 18(36%) patients and

worsened in 2(4%) patients.

Maximum improvement (75%) was seen in pre op 21–30 dB group. The mean preop AB gap calculated was 37.2±6.875 dB and mean postop AB

gap calculated was 27.08±9.9 dB.