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Our objective is to identify novel coronavirus disease 2019 (COVID-19) patients with a diagnosis of sudden sensorineural hearing loss (SSNHL) with an aim to describe possible mechanisms. A systematic review was conducted using PubMed and Google Scholar. Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines were followed. Our search terms included: "Sensorineural Hearing Loss" + "COVID-19" or "Sensorineural Hearing Loss" + "SARS-CoV-2" or "Sensorineural Hearing Loss" + "Coronavirus". Studies that adhered to the inclusion and exclusion criteria were included in the review. Of the 20 articles identified in the initial search, five met the inclusion criteria. The included articles consisted of four case studies and one letter to the editor, with seven total patients analyzed. All patients were COVID-19 positive and exhibited SSNHL, either unilateral or bilateral. Four patients reported tinnitus and two patients experienced vertigo. One patient was treated with hydroxychloroquine and one patient was treated with a variety of medications. Four patients were treated with intravenous and/or oral steroids intended to treat the SSNHL. The current literature describing SSNHL in COVID-19 patients is insufficient to characterize the pattern of hearing loss or advise about the treatment or outcomes. Future studies require a larger database or population study.

Our objective is to analyze the risk of particle spread through mastoidectomy during the COVID-19 pandemic with an aim to assess the tools used to mitigate the spread. A systematic review was conducted using PRISMA guidelines. Our search terms included: MASTOIDECTOMY + COVID-19 or MASTOIDECTOMY + SAR- CoV-2 or MASTOIDECTOMY + CORONAVIRUS. Studies consistent with the inclusion and exclusion criteria were included in the review. Of the 20 articles identified in the initial search, six met the inclusion criteria. The included articles were all experimental studies, with five studies using cadaver subjects and one study using live human subjects. Three studies measured droplet spread and three studies measured aerosolized particle spread. The maximum distance of particle spread ranged from 30 cm to 208 cm. Four studies assessed the use of a barrier system, with two using the OtoTent and two using a barrier drape. Two studies defined the microscope alone as a possible mitigatory tool. One study compared burr type and size to determine the effects on particle spread. During the coronavirus disease 2019 (COVID-19) pandemic, evaluation of tools to mitigate particle spread is imperative for the safety of the surgical team and the healthcare system at large. Barrier drapes, OtoTents and microscopes all have proven to mitigate particle spread; however, further research needs to be performed to compare their efficacy and develop a standard of safety.