Outcome of Tympanoplasty with Cortical Mastoidectomy in Tubotympanic Type of CSOM

Background: Chronic suppurative otitis media (CSOM) is one of the most common ear diseases in under developing countries. Otolaryngologists debate whether to perform tympanoplasty with or without cortical mastoidectomy when treating CSOM. Objective: To see the outcome of tympanoplasty with cortical mastoidectomy for hearing gain and grafting success. Methods: This observational study was carried out in the Department of Otolaryngology - Head and Neck Surgery, Bangabandhu Sheikh Mujib Medical University, Dhaka from July 2018 to June 2020. A total of 30 patients who underwent type 1 tympanoplasty with cortical mastoidectomy were enrolled in this study. Following enrollment, the condition of the pinna, preauricular region, postauricular region, and external auditory canal were examined. The location and extent of the tympanic membrane perforation, the state of the remaining tympanic membrane, the health of the middle ear mucosa, and the ossicles were all examined during the otoscopy. Tuning fork tests, tests for facial nerve integrity, and fistula tests were also carried out. The hearing level was assessed by pure-tone audiometry with masking. Results: Among 30 patients’ females were 53.3% and males were 46.7%. All of the patients ranged in age from 16 to 60, with the majority of them falling between the ages of 21 and 30. Most of the patients came from middle-class families, and the majority of patients were from rural areas. The majority of patients showed unilateral ear involvement. Most often, the central malleolar region was perforated, then the anterior central region and the posterior central region. The most frequent perforation size was medium, followed by small, large, and subtotal. The pre- treatment bone conduction threshold was 11.74± 4.42 dB, which was reduced to 10.14 ±3.70 dB after treatment (p<0.05). The pre-treatment air conduction threshold was 39.78± 8.76 dB, which was reduced to 26.45 ±9.19 dB after treatment (p<0.05). The pre-treatment air-bone ..