Intra-Operative Ossicular Chain Status in Patients with Chronic Otitis Media.

Abstract

The Objective of the study was to assess the ossicular status in chronic otitis media (COM)-mucosal and squamosal type and statistically evaluate the extent of ossicular destruction intraoperatively in COM patients. The findings of this study could help us to predict preoperatively the probability of having ossicular chain destruction in COM ears and thus patients could therefore be properly consented about these potential issues before surgery. The study was carried out in ENT department of tertiary health care hospital, between January 2019 to January 2020. All patients of all age groups and both genders, diagnosed with COM Mucosal and Squamosal Type with complaints of ear discharge and hearing loss with good cochlear reserve and requiring surgery were included in the study, after taking informed written consent in vernacular language. All the patients included in the study were evaluated with detailed history, clinical examination including otomicroscopy, tuning fork tests and pure tone audiometry. The patients were then posted for ear surgery and the middle ear status and ossicular chain status were assessed using a microscope intraoperatively. Out of 98 patients, 45(45.9%) had mucosal and 53 (54.08%) had squamosal disease. Ossicular chain was eroded in 69 cases (70.5%). 23 out of 45 (51.1%) mucosal cases and 46 out of 53 squamosal cases (86.7%) reported ossicular erosion. Most frequently involved was long process of incus > stapes > malleus. From our study, we concluded that there is a significant relationship between type of disease pathology in middle ear and ossicular erosion being higher in Squamosal type of COM, with malleus being the most resistant and incus being the most susceptible ossicle.