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    The effect of the severity of COVID-19 on the sequelae of the audiovestibular system
    (Sage Publications Inc, 2023) Aydin, Sukru; Koca, Cigdem Firat; Celik, Turgut; Kelles, Mehmet; Yasar, Seyma; Oguzturk, Saadet
    Objectives: The neurotropic and neuroinvasive properties of severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) have been described. It remains unknown how SARS-CoV-2 affects the audiovestibular system when it causes mild or severe disease. In this study, the sequelae effect of SARS-CoV-2 on the audiovestibular systems of different patient groups was investigated using objective and subjective test batteries. Methods: In this present study, we evaluated vestibulocochlear functions of patients who previously had Coronavirus Disease-2019 (COVID-19) with pure tone audiometry, ocular vestibular-evoked myogenic potential (o-VEMP), and cervical vestibular-evoked myogenic potential (c-VEMP) tests to identify possible sequelae by comparing them with the control group. Results: We found that the amplitude of p13-n23 was lower in both groups of patients than in the control group (p < 0.001). In the results of the left ear c-VEMP, the amplitude of p13-n23 was statistically different between the outpatient, inpatient, and control groups. The amplitude of p13-n23 was lower in both groups of patients than in the control group (p < 0.001). In the evaluation of the o-VEMP in the left ear, we observed a statistically significant difference in the latency of n10 (p = 0.006) and the amplitude of n10-p15 (p < 0.001) between the groups. The n10 latency was prolonged in both groups of patients compared to the control group and there was no statistically significant difference between groups of patients. Furthermore, the amplitude of n10-p15 was lower in both groups of patients compared to the control group and there were no statistically demonstrable differences between the groups of patients. Conclusions: In conclusion, our results suggest that SARS-CoV-2 may affect the vestibulocochlear system. But we could not find a direct relationship according to the severity of the disease.