One year on: an updated systematic review of SARS-CoV-2, COVID-19 and audio-vestibular symptoms

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Abstract

OBJECTIVE: The aim was to systematically review the literature to December 2020, in order to provide a timely summary of evidence on COVID-19 and audio-vestibular symptoms.
DESIGN: The protocol was registered in the International Prospective Register of Systematic Reviews. The methods were developed in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-analyses guidelines. Risk of bias was assessed using the National Institute of Heath quality assessment tools.
STUDY SAMPLE: After rejecting 850 records, 28 case reports/series and 28 cross-sectional studies met the inclusion criteria.
RESULTS: There are multiple reports of hearing loss (e.g., sudden unilateral), tinnitus and rotatory vertigo in adults having a wide range of COVID-19 symptom severity. The pooled estimate of prevalence, based primarily on retrospective recall of symptoms, is 7.6% (CI: 2.5-15.1), 14.8% (CI: 6.3-26.1) and 7.2% (CI: 0.01-26.4), for hearing loss, tinnitus and rotatory vertigo, respectively. However, these could be an over-estimate because it was not always clear that studies were reporting a change in symptom.
CONCLUSION: There are multiple reports of audio-vestibular symptoms associated with COVID-19. However, there is a dearth of high-quality studies comparing COVID-19 cases and controls.
Original languageEnglish
JournalInternational Journal of Audiology
Publication statusPublished - Feb 2021

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