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KAHRAMAN KOYTAK, PINAR

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KAHRAMAN KOYTAK

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2015 - 20172
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    The reliability of medial and lateral plantar nerve recordings in healthy elderly individuals
    (SPRINGER-VERLAG ITALIA SRL, 2015) ULUÇ, KAYIHAN; Keskin, Gokce; Koytak, Pinar Kahraman; Bastan, Birgul; Tanridag, Tulin; Us, Onder; Uluc, Kayihan
    The aim of this study was to investigate the reliability of medial plantar (MP) and lateral plantar (LP) nerve conduction studies (NCS) in healthy individuals aged > 65 years, and to obtain reference values for this age group. The study included 81 healthy subjects. MP response was absent in only 2 subjects, but LP response could not be obtained bilaterally in 43 of the 81 subjects. Regression analysis showed that MP NCS could be reliably performed in those aged a parts per thousand currency sign72 years and normal values for MP nerve in individuals aged 66-72 years would be strongly against a large-fiber neuropathy. However, LP response was absent in 53.1 % of the healthy elderly subjects; therefore, we think it is unreliable to study the LP nerve in this age group.
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    Topiramate and accommodation: Does topiramate cause accommodative dysfunction?
    (CANADIAN OPHTHAL SOC, 2017) ÇERMAN, EREN; Cerman, Eren; Turhan, Semra Akkaya; Eraslan, Muhsin; Koytak, Pinar Kahraman; Kilinc, Ozden; Tanridag, Tlin
    Objective: To investigate the accommodation function in topiramate users. Design:Case-control clinical study. Participants:The participants included 16 controls and 22 patients using 100 mg/kg topiramate who were diagnosed with migraine according to the International Classification of Headache Disorders, second edition criteria. Methods:One-minute dynamic measurements of refraction with accommodation stimuli of 0 D, 2 D, 2.5 D, 3 D, 4 D, and 5 D were obtained using the open field refractometer WAM-5500 in. Results:In most of the accommodation stimuli ranges (0 D, 2.5 D, 3 D, and 5 D), topiramate users had a significantly higher accommodative lag compared with controls (p=0.028, p =0.014, p=0.011, and p=0.011, respectively). The most important causes of accommodative lag were found to be accommodation stimulus and inclusion in the topiramate group (p<0.001, R-2=0.32, 95% CI 0.22-0.37 and 0.42-0.91, respectively). Multivariate linear regression analysis revealed that the 2 most important predictors of accommodative lag were accommodation stimulus and age (p<0.001, r=0.51, 95% CI 0.31-0.32 and 0.67-0.69, respectively) CONCLUSIONS: Even after adjustment for age, accommodative lag is greater across several accommodative stimulus levels in patients using topiramate, which may be related to visual symptoms in topiramate users.