Hearing Outcomes in Canal Wall up Versus Canal Wall down Mastoidectomy

Abstract

Introduction: Chronic active otitis media - squamous variety is a disease characterized by chronic inflammation of middle ear and mastoid air cells. Advantage of CWDM [Canal Wall Down Mastoidectomy] are complete removal of the disease. 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 observational study with the subjects having Chronic Otitis Media in the age group of 12 to 65 years, who have been planned to undergo single stage reconstruction after CWDM. The results of pure tone audiometry done were analysed by SPSS (version 27.0)

Results: The most common age distribution of patients with chronic otitis media in 30-42 years (52.5%). The most common sex affected male (55%). In the pre-operative Air Bone Gap, number of patients in d” 25 decibel, 26-40 decibel and 41-60 decibel were 5, 33, 2 respectively whereas in post-operative it was 25, 15, 0 respectively. There was a gain of 6.899 decibel between preoperative mean air bone gap & post-operative mean air bone gap.

Conclusion: CWDM is a safe and effective surgical procedure and is a preferred procedure in current otological practice. There was a gain in pre-operative and post-operative air bone gap. A modest closure of air bone gap can be expected helping the patient to achieve social hearing levels.