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    Audiological and transient evoked otoacoustic emission findings in patients with vitiligo
    (Sage Publications Ltd, 2010) Aslan, Sundus; Serarslan, Gamze; Teksoz, Emel; Dagli, Safak
    OBJECTIVE: To investigate hearing loss in patients with vitiligo. STUDY DESIGN: Case-control study. SETTING: University hospital. SUBJECTS AND METHODS: Conventional pure-tone and high-frequency audiometric tests were obtained, and pure-tone average hearing thresholds were calculated for 22 consecutive cases with vitiligo and 22 sex- and age-matched controls. Transient evoked otoacoustic emission testing was also performed. RESULTS: There was sensorineural hearing loss on pure-tone audiogram in 16 (36.4%) ears in patients with vitiligo. The hearing thresholds (in dB) were 16.02 +/- 6.61 versus 12.39 +/- 6.05, 15.68 +/- 6.34 versus 13.18 +/- 3.75, 15.80 +/- 13.93 versus 7.39 +/- 6.95, 25.11 +/- 17.40 versus 15.91 +/- 12.91, 29.89 +/- 18.57 versus 17.84 +/- 12.36, and 45.91 +/- 23.31 versus 33.86 +/- 15.99 in the patient and control groups at 0.25, 1, 4, 8, 10, and 12.5 kHz, respectively, and were statistically significantly different. Reduction of transient evoked otoacoustic emission amplitude was statistically significant at 4 kHz in patients with vitiligo (6.34 +/- 3.98 dB vs 8.63 +/- 5.15 dB, P = 0.023). There was no significant difference in reproducibility, stimulus intensity, stability, and average transient evoked otoacoustic emission amplitudes in patients with vitiligo. CONCLUSION: Hearing thresholds at pure-tone and high-frequency audiometry were higher in patients with vitiligo. Also, significantly lower high-frequency amplitudes were recorded during transient evoked otoacoustic emission testing in the disease group. (c) 2010 American Academy of Otolaryngology Head and Neck Surgery Foundation. All rights reserved.
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    Formaldehyde technique in dimensional stability of free fascia: An animal study
    (Taylor & Francis As, 2010) Aslan, Sundus; Savas, Nazan; Ozsoy, Sule Yurdagul; Dagli, Safak
    Conclusion. Despite the fact that this was a study done with fascia other than the temporalis, we found that non-formaldehyde-formed and formaldehyde-formed fascia graft shrunk by a mean value of 26.5%, and 16.7%, respectively, which was statistically significant. This finding might be the explanation for the consistently reported successful outcomes in tympanoplasty carried out with formaldehyde-formed temporalis fascia. However, this study should be validated with autologous human temporalis fascia graft. Objectives. To determine whether there is any difference in the dimensional stability of free fascia grafts when formed with formaldehyde or not. Materials and methods. In a total of 22 rats, free fascias were prepared with 4% buffered formaldehyde solution in 11 and without formaldehyde in the other 11 rats. All fascia grafts of 1 x 1 cm were implanted under the insicion site of the same rat (autograft). All rats were re-operated after 5 days to measure the dimensions of the grafts. The postoperative changes in the dimensions were calculated. Results. By the 5th day, the mean non-formaldehyde-formed graft surface area was 73.51 +/- 13.43 mm(2) and the mean formaldehyde-formed graft surface area was 83.28 +/- 10.50 mm(2) respectively. After 5 days there was a mean decrease in surface area of the non- formaldehyde-formed and formaldehyde-formed grafts of 26.49 +/- 13.43 mm and 16.72 +/- 10.50 mm(2), respectively. It was found that formaldehyde-formed fascia exhibited significantly superior dimensional stability when compared with non-fixed fascia during the 5 days of the early healing phase (p=0.031).
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    Öğe
    Prolene®: a novel, cheap, and effective material in dacryocystorhinostomy
    (Taylor & Francis As, 2009) Aslan, Sundus; Oksuz, Huseyin; Okuyucu, Semsettin; Akoglu, Ertap; Dagli, Safak
    Conclusion. Prolene (R) is cheap, effective, and readily available in almost all operating theaters. It might be used successfully in endoscopic dacryocystorhinostomy and is promising as an alternative to silicone stent intubations, especially in settings with limited resources. Objective. To evaluate the clinical efficacy and results of stenting with polypropylene (Prolene (R),Ethicon, Inc.) suture material instead of silicone tube in endoscopic dacryocystorhinostomy. Patients and methods. Forty-two endoscopic dacryocystorhinostomy operations were performed in 36 patients (I I men and 25 women; mean age 34.7 +/- 9.5 years, range 16-60 years) between 2007 and 2008. After creating an aperture in the medial wall of the lacrimal sac, 2/0 Prolene was inserted through the canaliculi into the sac. The Prolene was left in the lacrimal sac for 3 months. The patients were followed up for between 6 and 18 months (mean 8.1 +/- 3.6 months). The improvement in the complaint of epiphora was grouped as very good, good, or no change. Results. The improvement in 34 eyes (81%) was reported as very good, whereas improvement was noted as good in 5 eyes (11.9%), and there was no change in 3 eyes (7.1%). We observed granulation tissue formation around the Prolene in two patients.