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    Assessment of olfactory function by Sniffin' sticks in bakery workers exposed to flour dust
    (Verduci Publisher, 2022) Altintas, M.; Kar, M.; Muluk, Nuray Bayar; Cingi, C.
    OBJECTIVE: This study used the Sniffin' Sticks test battery to evaluate olfactory function in employees of a bakery exposed to flour dust. SUBJECTS AND METHODS: The study enrolled 43 individuals with exposure ( i.e., to flour) plus 41 healthy volunteers as controls. Olfactory function was assessed in these subjects through the use of the Sniffin' Sticks test battery. The overall score was calculated by adding up the scores for each of the 12 separate odors. A score of 6 or less was deemed anosmia, from 7 to 10 hyposmia, and a score of 11 or 12 was taken to indicate no impairment of olfaction. RESULTS: There was a statistically significant difference between the scores obtained in the exposure group (10.09 +/- 2.29) and the control group (10.73 +/- 2.07), the exposure group having a lower score (p<0.05). Within the exposure group, men and women did not score differently (p>0.05). Furthermore, in this group, the overall score did not correlate significantly with age, sex, length of employment, or use of tobacco or alcohol use (p>0.05). Using the scheme employed in this study, 9.3% of the exposed workers were anosmic, compared to 9.8% in the controls, whereas 34.9% of baker workers were hyposmic, compared to just 14.6% of the controls. Thus, our study shows that impairment of the ability to smell was present in 44.2% of individuals exposed occupationally to flour dust. CONCLUSIONS: This study reveals that being exposed to flour dust reduces the ability to smell normally. In order to minimize the impact of being exposed, workplaces should ensure adequate ventilation and provide workers with protective facemasks.
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    Olfactory function in patients undergoing hemodialysis as assessed by Sniffin' Sticks testing
    (Verduci Publisher, 2023) Kar, M.; Altintas, M.; Muluk, N. Bayar; Cingi, C.
    OBJECTIVE: This study evaluated olfactory function in patients undergoing hemodialysis. The evaluation utilized the Sniffin' Sticks test. PATIENTS AND METHODS: The study enrolled 56 individuals undergoing hemodialysis for chronic renal failure alongside 54 healthy controls. The Sniffin' Sticks battery was used to assess olfactory function in all subjects. The battery included 12 separately identifiable odors. A score below 6 was considered anosmia, whilst scores ranging from 7 to 10 were classed as hyposmia. A score of at least 11 indicated normal olfaction. RESULTS: There was a statistically significant difference in scores between the two groups. The hemodialysis patients scored 9.12 +/- 2.77 compared to 10.72 +/- 1.94 in the controls. In the hemodialysis patients, scores for males and females did not differ significantly. Furthermore, there was no correlation between score and age, sex or length of renal failure. Some 12.5% of hemodialysis patients were anosmic, whilst 50% were hyposmic. The corresponding rates in the control group were 7.4% and 20.4%. CONCLUSIONS: Undergoing hemodialysis is associated with a decreased total score on the Sniffin' Sticks battery, with anosmia in 12.5% of patients and hyposmia in 50.0%. Thus, olfactory impairment is present in 62.5% of hemodialysis patients. According to previous research, renal transplantation results in an improved ability to smell, depending on how plastic the neurons involved in olfaction are.