Hearing treshold before and after middle ear surgery in chronic suppurative otitis media (CSOM)

Abstract

Hearing loss is a common symptom in chronic suppurative otitis media (CSOM), often cause social communication disturbance. Canal wall up tympanoplasty and canal wall down tympanoplasty are surgery procedures for managing this disease that no response to convensional treatment. These surgery procedures should consider to hearing function impact. The aim of this study was to evaluate the difference hearing threshold between before and after middle ear surgery on CSOM patients. It was an historical cohort study conducted from January 2015 to December 2016 involving CSOM patients who underwent canal wall up tympanoplasty surgery and canal wall down tympanoplasty in The Otology Division, Departement of Ear, Nose, Throat, Head and Neck Health, Dr. Sardjito General Hospital, Yogyakarta. The inclusion criteria included basic data, diagnostics, surgery reports, and audiometry results before and 3 months postoperatively, while the exclusion criteria were not complete medical record data. Total of 64 patients with CSOM were involved in this study consisting of 32 patients who underwent canal wall up tympanoplasty and 32 patients who underwent canal wall down tympanoplasty. Significantly different in the increasing of hearing threshold between before and after canal wall up tympanoplasty surgery compared to the canal wall down tympanoplasty was observed (p = 0.021). In addition, surgical technique was the main factor affecting postoperative hearing threshold in CSOM patients (p < 0.05). In conclusion, the increasing of hearing threshold in CSOM patients underwent canal wall up tympanoplasty surgery is better than those underwent canal wall down tympanoplasty.