An Observational Study on Functional Outcome of Tympanoplasty in Canal Wall Down Mastoidectomy in Patients with Chronic Otitis Media

Introduction Chronic active otitis media - squamous variety is a disease characterized by chronic inflammation of middle ear. Advantage of Canal Wall down Mastoidectomy are complete removal of the disease, easy visualization of the entire middle ear cleft. This study will focus on this advancement of gain in audiological function following canal wall down mastoidectomy with appropriate tympanoplasty and ossicular reconstruction. Materials and Methods It is an Institutional based descriptive study undertaken in a tertiary care hospital among patients with squamous variety of Otitis Media belonging to the age group 12- 65years, planned to undergo single stage reconstruction after Canal Wall Down Mastoidectomy. The results were analysed by SPSS (version 27.0) . Results The age distribution of patients of 17-29 years was 14 (35%), 30-42 years 21 (52.5%) and 43-59 years 5 (12.5%). The sex distribution were 18 (45%) Female and 22 (55%) male. In the pre-operative Air Bone Gap, number of ears in ≤25 dB, 26-40 dB and 41-60 dB were 5, 33, 2 respectively whereas in post-operative it was 25, 15, 0 respectively. There was a gain of 6.899 dB between pre-operative & post-operative mean air bone gap. Conclusion Canal wall down mastoidectomy is a safe and effective surgical procedure commonly performed for Chronic Otitis Media squamosal type and currently is a preferred procedure. There was a gain in post-operative air bone gap.