Audio-Vestibular Manifestations in COVID-19; A Systematic Review and Meta-analysis

Introduction Audio-Vestibular (AV) presentation as a consequence of COVID-19 is a less ventured zone. The aim of the study was systematically review the literature (both studies and case reports) published up to August 2021, in order to provide evidence on audio-vestibular symptoms in SARS-CoV-2, COVID-19 patients. Systematic review and meta-analysis was performed for assessment of prevalence of AV symptoms among COVID-19 patients. Materials and Methods A search of existing literature using key words and MeSH (Medical Subject Headings) terms was done. The methods were developed in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-analyses (PRISMA) guidelines. 36 qualitative studies were narratively synthesized. Meta-analysis was performed on 18 quantitative studies Results Hearing loss was most commonly reported AV manifestation among case series / case reports. In the quantitative studies, the pooled estimate of Hearing loss, Dizziness and Tinnitus was 4.558%, 4.226% and 5.513% respectively. Other reported AV symptoms included ear ache, aural fullness and facial paresis. Conclusion Prevalence of AV symptoms in COVID-19 differs from that of the published literature. This prevalence of hearing loss is less than that reported amongst the world population. Structured community-based studies with homogeneous working definitions have to be conducted to assess the true prevalence.