Does COVID-19 have an impact on hearing?

Abstract

Backgrounds SARS-CoV-2 is known to be a neurotrophic virus. However, the effect of this virus on the hearing system is still uncertain. Objectives We aimed to investigate the possible effect of COVID-19 on hearing. Materials and Methods Thirty healthcare workers who had COVID-19 after hearing evaluation with pure tone audiometry (PTA) for any reason in the last 1 year were included in the study. PTA and transient evoked otoacoustic emissions (TEOAE) tests were performed in 15 of 30 patients during the active infection period. For all 30 patients, otoscopic examination plus PTA and TEOAE tests were performed at the end of the first month after their treatment. Results When the PTA results of 30 patients (60 ears) before and after COVID-19 were compared, a significant decrease in hearing level was found only at 1000 Hz (p < .05). There were no significant differences at other frequencies. When the PTA and TEAOE test results of 15 patients (30 ears) that were performed during and after COVID-19 were compared, no significant differences were found. Conclusion and significance We conclude that COVID-19 may cause hearing loss. However, this result needs to be confirmed with comprehensive studies to be conducted in larger patient groups.