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    Did Increase of Rates of Sudden Hearing Loss During COVID-19?
    (Duzce Univ, Fac Medicine, 2025) Belada, Abdullah; Koder, Ahmet; Sungur, Mehmet Ali
    Objective: This study aims to assess the impact of the COVID-19 pandemic on cases of sudden hearing loses (SHL). Method: We examined two patient groups diagnosed with SHL at D & uuml;zce University Medical Faculty Hospital and D & uuml;zce Ataturk State Hospital in Turkey. The first group, diagnosed between March 2019 and March 2020, represents pre-Covid-19. The second group includes patients diagnosed from March 2020 to March 2021, corresponding to the initial year of the Covid-19 pandemic in this region. We evaluated patient numbers, age, and gender across these groups to identify any increase in SHL cases potentially associated with the pandemic. Results: The ratio of SHL cases per population in Group 1 was 51 out of 450,000, or approximately 0.011333. In Group 2, this ratio was 32 out of 450,000, or roughly 0.007111. Statistical analysis (p=0.037) revealed a notably higher SHL rate in the pre-Covid-19 period than during the pandemic. Conclusions: The suggested etiological explanations for SHL remain hypothetical. Although COVID-19 has been widely considered a possible factor, our findings do not support increased SHL cases due to the virus.
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    Evaluation of Nasal Mucociliary Clearance in Recently Diagnosed Covid-19 Patients Before Treatment
    (Duzce Univ, Fac Medicine, 2023) Koder, Ahmet; Kilicaslan, Saffet; Belada, Abdullah; Habiloglu, Arif Dogan; Ataoglu, Ozlem; Sungur, Mehmet Ali; Atik, Dursun
    Objective: Our study aims to evaluate the nasal mucociliary clearance (NMC) in Covid-19 patients who have been recently diagnosed and not been treated yet and investigate how Covid-19 affects NMC.Methods: A total of 120 participants, who applied to Duzce Ataturk State Hospital between September and November 2020, were included in our study. 60 of them were the participants, diagnosed with Covid-19. And 60 of them were the control group. The age range was 18 to 66. 60 participants, diagnosed with Covid-19 and not yet treated, were included in our study. Those with taste disorders were excluded from the study. The control group consisted of 60 healthy volunteers. NMC was evaluated using a saccharin test. The results were compared in the Statistical Package for Social Sciences (SPSS).Results: The study group, which consisted of 60 Covid-19 participants of whom treatment was not yet started, and the 60-participant healthy control group were evaluated in our study. The average age of the study group was 40,72 +/- 12,96 and 39,16 in the control group. The average NMC was 15,95 +/- 3,37 in the study group, and 8,38 +/- 1,03 in the control group. When evaluated statistically, it was found higher in the study group (p<0,001).Conclusions: NMC acts as a barrier for inhaled foreign bodies. It is a non-specific protection system against airborne pathogens. Consequently, NMC extends in Covid-19 patients.
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    Seasonal Pattern of Bell's Palsy Incidence in a Post-COVID-19 Context
    (Duzce University Medical School, 2025) Koder, Ahmet; Belada, Abdullah; Kiliçaslan, Saffet
    Aim: This study aimed to investigate the seasonal effects on the incidence of Bell's palsy (BP), and to determine whether the rates fluctuate with changing seasons, particularly following the coronavirus disease 2019 (COVID-19) pandemic. Material and Methods: A retrospective analysis was conducted on 267 confirmed BP cases between January 2020 and December 2023. Data were collected on the onset dates, demographic information, and seasonal distribution of the cases. Cases were categorized based on their seasonal occurrence to identify trends and variations. Results: The study group included 137 males and 130 females, representing 51.3% and 48.7% of the sample, respectively. The mean age was 45.71±16.11 for males, and 47.51±19.27 years for females, with no significant difference (p=0.408). The overall mean age was 46.58±17.71 years. Although there was no statistically significant difference between seasons (p=0.322), a notable increase in BP incidence was observed in spring (28.8%) and summer (26.6%). The highest number of cases was observed in June and March. No significant difference was found in seasonal variations of BP incidence in terms of age (p=0.691) and gender (p=0.905). Conclusion: Contrary to conventional beliefs associated with BP in colder climates, findings of this study indicate a higher incidence of BP during warmer seasons, particularly in spring and summer. This trend might have been influenced by the aftermath of the COVID-19 pandemic. These results underscore the need for comprehensive studies to explore the interplay between environmental factors, viral pandemics such as COVID-19, and BP pathogenesis, potentially leading to better prevention and management strategies. © 2025 Elsevier B.V., All rights reserved.