Cochlear Implant Performance in a Postlingual Auditory Neuropathy Spectrum Disorder: A Case Report

Auditory neuropathy spectrum disorder (ANSD) presents unique challenges in audiology, particularly when occurring postlingually. This case study focuses on a 20-year-old male with postlingual ANSD who underwent bilateral cochlear implantation (CI) after experiencing progressive hearing loss. Despite significant advancements in CI technology, outcomes for ANSD patients, particularly in speech perception, remain inconsistent. This study aims to evaluate the effectiveness of CI in improving auditory performance and speech perception in postlingual ANSD patient, addressing a gap in existing research where adult outcomes are less well-documented compared to children. Our methodology includes a detailed analysis of the patient’s auditory and speech outcomes pre- and postimplantation, supplemented by clinical assessments, audiological testing, and rehabilitation progress. The results showed that while the patient experienced improved hearing thresholds, his speech perception remained poor, consistent with neural desynchronization associated with ANSD. In addition, the study highlights the emotional and social benefits of CI, despite the limited improvement in speech understanding. These findings contribute to the field by emphasizing the need for personalized treatment approaches in managing postlingual ANSD, as outcomes vary widely based on individual factors, including neural integrity and the extent of auditory nerve involvement.