Cagatay Oysu
Istanbul University
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Featured researches published by Cagatay Oysu.
Otolaryngology-Head and Neck Surgery | 2002
Ismet Aslan; Cagatay Oysu; Bayram Veyseller; Nermin Baserer
OBJECTIVE : To investigate the therapeutic effects of the addition of hyperbaric oxygen (HBO) therapy to the conventional therapies in sudden deafness (SD) and to investigate the influence of patient age on the effectiveness of HBO therapy. STUDY DESIGN AND SETTING : We undertook a retrospective review of 50 cases of SD treated at a tertiary university hospital. Twenty-five patients (group 1) were treated with betahistine hydrochloride, prednisone, and daily stellate ganglion block. A second group (group 2) of 25 patients received the same basic treatment with the addition of HBO therapy. RESULTS : The mean hearing gain was 20.0 dB in group 1 and 37.9 dB in group 2 (P < 0.05). In group 2 patients, the mean gains were 51.4 and 23.3 dB for those younger and older than 50 years (P < 0.05) and 48.9 and 14.5 dB for those younger and older than 60 years (P < 0.001), respectively. In patients older than 60 years, the mean gains were 14.5 and 14.4 dB in group 2 and group 1, respectively (P > 0.05). CONCLUSIONS : The addition of HBO therapy to the conventional treatment significantly improves the outcome of SD, especially in patients younger than 50 years. Additional HBO therapy provides limited benefit in patients older than 50 years and no benefit in patients older than 60 years.
International Journal of Pediatric Otorhinolaryngology | 2001
Cagatay Oysu; Aslihan Oysu; Ismet Aslan; Mehmet Tinaz
OBJECTIVE (a) To report computed tomography findings of eight new cases with Waardenburgs syndrome (WS) type I and review reported temporal bone radiographic and histopathological findings in WS with hearing loss; (b) To determine the frequency of inner ear pathologies that may contraindicate cochlear implantation. METHODS A review of 1166 pediatric patients with sensorineural hearing loss revealed 12 cases (1%) with WS, whose family screenings disclosed additional 12 subjects with the same disorder. Among these 24 cases, eight had WS type I and were subjected to computed tomography scanning of temporal bone. Imaging findings of 28 cases reported previously in English literature were evaluated together with our eight patients. RESULTS Malformation of the inner ear was found in none of the nine WS type I cases evaluated here, while the frequency of internal acoustic canal malformation was 11%. Regardless of the subtypes of the syndrome, 6 of 36 cases (17%) had radiological abnormality of the inner ear. Malformation and/or absence of the semicircular canals were the most common congenital abnormality of the inner ear. Hypoplasia of the cochlea was present in 3 of 36 cases (8%). CONCLUSIONS Abnormality of bony labyrinth in WS with congenital deafness is not a frequent finding, particularly in WS type I. Therefore, the otologist and audiologist must keep in mind that most of these cases are suitable for cochlear implantation regarding inner ear anatomy.
Annals of Otology, Rhinology, and Laryngology | 2002
Cagatay Oysu; Arif Ulubil; Ismet Aslan; Nermin Baserer
Neonatal hyperbilirubinemia remains an important cause of childhood deafness, especially in developing countries. After neonatal hyperbilirubinemia, the auditory neural pathways, cochlea, or both may be affected. In this study, we aimed to determine the incidence of cochlear impairment and the appropriate means of hearing screening in hyperbilirubinemic neonates. A retrospective review of 1,032 pediatric patients with hearing loss revealed 67 cases (6.5%) of severe hyperbilirubinemia in the neonatal period. Thirty of these patients had neonatal hyperbilirubinemia as the single identifiable risk factor for hearing loss. In 26 of 30 cases (87%), otoacoustic emissions (OAEs) were absent, whereas in the remaining 4 cases (13%), robust emissions were detected despite an absent auditory brain stem response (ABR). Auditory screening of newborns with jaundice by OAEs possesses a significant risk of undiagnosed deafness. On the other hand, if the ABR is used as the single means of screening, auditory neuropathic conditions will probably be underlooked. Therefore, we recommend dual screening of hearing by ABR and OAEs in hyperbilirubinemic newborns.
American Journal of Otolaryngology | 2010
Cigdem Tepe Karaca; Tulay Erden Habesoglu; Baris Naiboglu; Mehmet Habesoglu; Cagatay Oysu; Erol Egeli; Ilkay Tosun
Schwannomas are tumors of the peripheral nerves originating in the nerve sheaths that account for 1% of benign tumors located in the oral cavity. The tongue as a whole is the most common location for intraoral schwannomas to occur; however, it is quite rare to diagnose schwannoma in children. We are contributing a report of a 13-year-old child with a 1-year history of slowly growing swelling on the anterior part of corpus of the tongue. The patient complained of the disturbance to mastication and phonation. Diagnosis was confirmed by excisional biopsy. Histologic identification of Antoni A and B areas along with strong and diffuse staining with S-100 stain pathologically completed the diagnosis of schwannoma.
Laryngoscope | 2014
Ayşegül Verim; Lütfü Şeneldir; Baris Naiboglu; Çiğdem Tepe Karaca; Semra Külekçi; Sema Zer Toros; Cagatay Oysu
To analyze the differences between biodegradable and nondegradable nasal dressings with regard to their effects on wound healing in the short and medium term and on surgical outcomes in the long term, after endoscopic sinus surgery (ESS).
Acta Oto-laryngologica | 2009
Celil Uslu; Arman Tek; Arzu Tatlıpınar; Yasin Kılıçarslan; Ruhi Durmus; Evren Ayöğredik; Murat Karaman; Cagatay Oysu
Abstract Conclusion: High risk perforations including total, subtotal, atelectatic perforations, those with cholesteatoma and revision cases can be treated efficiently with cartilage reinforcement tympanoplasty. Objective: The purpose of this study was to describe the perforation closure rates and hearing results of cartilage reinforcement tympanoplasty. Methods: This was a retrospective chart review and included 60 patients who underwent surgery with the cartilage reinforcement technique between November 2006 and October 2008 at the Department of Otorhinolaryngology of Haydarpasa Numune Research and Training Hospital, Istanbul, Turkey. The male to female ratio was 28 (46.7%)/32 (53.3%). The mean age of the patients was 30.10 ± 11.50 years (range 13–55). Results: Preoperatively, only one patient had a retraction pocket but not a perforation, 12 (20%) patients had perforation of < 25% of the total tympanic membrane diameter, 12 patients had perforation between 25% and 50% of the total membrane diameter, 18 patients had a perforation between 50% and 75% of total membrane diameter and 17 patients had a perforation of > 75% of the total membrane diameter. Postoperatively we achieved total closure of tympanic membrane perforations for 47 patients but the perforations of 13 patients remained in various sizes (7 patients had tympanic membrane perforation < 25% of the total membrane diameter, 3 between 25% and 50%, 2 between 50% and 75% and 1 patient had a perforation > 75% of the total membrane diameter). There was a statistically significant difference between percentages of preoperative perforation and postoperative perforations (p = 0.001). Only 1.7% of patients had no perforation preoperatively and this ratio increased to 78.3% postoperatively. Also, 30% of patients had a perforation between 50% and 75% of the total membrane diameter, 28.3% of the patients had a perforation > 75% of the total membrane diameter preoperatively and this ratio decreased to 3.3% and 1.7%, respectively. Concerning the audiological parameters, the difference between preoperative and postoperative hearing levels was statistically significant (p = 0.001).
Otolaryngology-Head and Neck Surgery | 2012
Mehmet Habesoglu; Kadri Demir; Ali Cemal Yumusakhuylu; Asli Sahin Yilmaz; Cagatay Oysu
Objective The aim of this study is to review the literature about nasal mucociliary clearance (MCC) and passive smoking in otorhinolaryngology by clearly explaining their relationship in a cross-sectional study. Study Design and Setting This cross-sectional study was conducted at the Umraniye Education and Research Hospital in Turkey. Umraniye Education and Research Hospital Ethical Committee approved the study, and informed consents of the patients were obtained. Methods Our study consisted of patients who presented to the Ear-Nose-Throat Department of Istanbul Umraniye Education and Research Hospital between February 2011 and July 2011. Three groups of subjects were evaluated: 15 passive smokers (group 1), 17 active smokers (group 2), and 15 healthy matched controls (group 3). All patients were asked to answer our questions regarding their smoking history, and nasal MCC time was assessed for all individuals of the 3 groups. Results The mean MCC value was 23.59 ± 12.41 in the smoking group, 12.6 ± 4.67 in the passive smoking group, and 6.4 ± 1.55 in the healthy group. The comparison of MCC values between the smoking group and passive smoking group and between the smoking group and healthy group revealed statistically significant differences (P < .01). There was also a significant difference between the MCC values of the passive smoking group and the healthy group (P < .01). In addition, we compared MCC values according to exposure number of cigarettes. Conclusion In this study, we conclude that passive smoking affects nasal MCC. Both active and passive smoking increases nasal MCC time when compared with healthy controls.
Journal of Craniofacial Surgery | 2014
Mehmet Habesoglu; Cagatay Oysu; Serap Sahin; Asli Sahin-Yilmaz; Deniz Korkmaz; Ahmet Tosun; Ahmet Karaaslan
Objective Our objective was to demonstrate the effects of platelet-rich fibrin (PRF) for the healing of acute ear drum perforation. Methods Thirty-two patients with acute traumatic ear drum perforations were randomly separated into 2 groups. In group 1 (n = 14), PRF was used for the repair of ear drum perforation; in group 2 (n = 18), we did not make any intervention. Results At initial inspection, perforation sizes were measured as 10.93 ± 3.58 mm2 in group 1 and 10.05 ± 4.02 mm2 in group 2. After 1 month, perforation sizes were 1.35 ± 2.53 mm2 in group 1 and 4.44 ± 3.34 mm2 in group 2 (P < 0.01). In the study group, the rate of ear drum closure was 64.3% and in the control group it was 22.2% (P < 0.05). Conclusion Here we found that PRF is a biomaterial that quickens the healing of ear drum which is autogenous and simply prepared.
Journal of Laryngology and Otology | 2001
Cagatay Oysu; Ismet Aslan; Bilge Bilgic; Engin Yazicioglu
We report the clinical course in a 25-year-old male patient of neurofibromatosis with malignant triton tumour (MTT). Triton tumour is a peripheral nerve sheath tumour with rhabdomyoblastic differentiation. This is relatively rare tumour of head and neck region and only 26 cases have been reported to date. The present case is the first reported MTT of parapharyngeal space, one of the most aggressive course among all head and neck MTTs, resulting in the death of the patient within three months following surgical resection. The aggressive nature of this tumour necessitates adjuvant therapeutic measures in addition to radical surgery in order to obtain better survival rates.
American Journal of Otolaryngology | 2013
Sema Zer Toros; Çiğdem Tepe Karaca; Pembegul Gunes; Cagatay Oysu; Cigdem Kalaycik Ertugay; Baris Naiboglu; Emin Elbüken; Erol Egeli
OBJECTIVE The aim of this experimental study was to evaluate the effects of hyperbaric oxygen, methylprednisolone and combined hyperbaric oxygen-methylprednisolone treatments on traumatic facial nerve regeneration in rats. SUBJECTS AND METHODS After exposure to facial nerve injury, four groups of rats were created with five subjects in each group: Group 1 (hyperbaric oxygen), group 2 (control), group 3 (combined hyperbaric oxygen-methylprednisolone), group 4 (methylprednisolone). Facial nerve specimens from sacrificed animals were examined for axonal degeneration, vascular congestion, macro vacuolization, axon diameter and thickness of myelin sheath. RESULTS There were significant differences with regard to axonal degeneration, vascular congestion and axon diameter between group 3 and the control group. In addition to lower axonal degeneration and vascular congestion, a larger diameter of axons was observed in group 3. There were significant differences with regard to vascular congestion and axon diameter between group 4 and the control group. We observed thicker myelin and lower axonal degeneration in group 3 compared with group 4. CONCLUSION The combination therapy with hyperbaric oxygen and methylprednisolone had an additive beneficial effect on regeneration of the facial nerve and may provide better treatment outcomes than methylprednisolone or hyperbaric oxygen therapy alone.