Evaluation of Outcomes Related to Hearing and Tinnitus After Ossicular Chain Reconstruction.

Abstract

The aim of this study was to evaluate both audiological and tinnitus related results in patients with tinnitus undergoing ossicular chain reconstruction (OCR) for ossicular chain injury. Between January 2015 and January 2019, patients who underwent OCR due to ossicular chain pathology and developed tinnitus symptoms were included in the study group. Middle ear pathologies were standardized using the middle ear risk index (MERI) scoring system and the tinnitus handicap inventory (THI) was used to determine the severity of tinnitus. The surgical methods used for reconstruction were partial ossicular replacement prosthesis (PORP) or total ossicular replacement prosthesis (TORP), depending on the patient's pathology. The study group consisted of 43 patients aged between 34 and 65 years. Mean MERI score of the patients was 6.42 ± 2.52. When assessed categorically, 18.6% of the study group was identified in the 'mild', 46.5% were in the 'moderate', and 34.5% were in the 'severe' MERI category. Patients in the TORP group and those who were undergoing second session OCR had higher MERI and preop THI scores. Post-operative tinnitus levels were higher in patients who had OCR in the second session and were in the severe risk group. The ABG and tinnitus scores of patients were found to improve with OCR. In patients who underwent TORP, both ABG and tinnitus scores decreased significantly. Whereas, in patients who underwent PORP, only ABG values decreased significantly. After OCR, both ABG value and tinnitus scores significantly decreased compared to pre-operative results. ABG recovery rate was 100% in the study group. It can be said that OCR positively changes both audiological parameters and tinnitus levels in ossicular chain pathologies.