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Öğe Acquired Capillary Hemangioma With Features of Tufted Angioma in the External Auditory Canal(Lippincott Williams & Wilkins, 2013) Cetinkaya, Zekeriya; Toplu, Yuksel; Kizilay, Ahmet; Aydin, Nasuhi EnginTufted angiomas may occur in the head and neck region, but the external auditory canal is a previously undefined localization. There are only 19 cases of hemangiomas reported in this unique localization. However, this case is the first capillary hemangioma of the tufted variant being reported with a recurrence after 7 years after surgical excision in a 47-year-old male patient.Öğe All Concha Bullosa: An Undefined Abnormality of the Lateral Nasal Wall(Springer, 2013) Toplu, Yuksel; Bayindir, Tuba; Karatas, Erkan; Akarcay, MustafaPneumatization of the turbinates, are the anatomic variations of lateral nasal wall. Turbinate pneumatization, refers to the existence of air cell inside the turbinates. Pneumatization of the middle turbinate is common, whereas rare in the superior and especially inferior turbinate. In this report we presented a case who has bilaterally pneumatization of all conchas.Öğe Anaesthetic Management in Obstructive Sleep Apnea Syndrome for Adenotonsillectomy(Aves, 2014) Sanli, Mukadder; Toplu, Yuksel; Ozgul, Ulku; Kayhan, Gulay Erdogan; Gulhas, NurcinThe anaesthetic management of adenotonsillectomy in children with obstructive sleep apnea syndrome was characteristic due to respiratory and cardiac side effects. A detailed physical examination in the preoperative period should be performed, including children's respiratory and cardiac systems. If they have an active infection, surgery should be postponed until the end of medical treatment. Preparation for difficult airway management should be done in the preoperative period. In this case, we presented a report of two children who had obstructive sleep apnea syndrome, with airway management performed at the right lateral position to prevent the pharyngeal collapse and rapid sequence intubation performed using a short-acting muscle relaxant.Öğe Antrochoanal Polyp: Clinical Presentation and Retrospective Comparison of Endoscopic Sinus Surgery and Endoscopic Sinus Surgery Plus Mini-Caldwell Surgical Procedures(Lippincott Williams & Wilkins, 2014) Kelles, Mehmet; Toplu, Yuksel; Yildirim, Ilhami; Okur, ErdoganAntrochoanal polyp is a benign polypoid lesion orginating from the maxillary sinus antrum and extending to the choana. Our aim was to assess the clinical presentation and associated rhinological findings of antrochoanal polyp patients and to evaluate results of 2 surgical treatments termed endoscopic sinus surgery (ESS) and ESS plus mini-Caldwell operation. The study included 46 patients. Factors such as patient age, sex, history of chronic sinusitis, allergic rhinitis, septal deviations, chonca bullosa, turbinate hypertrophy, and the origin of the polyp were assessed. We also evaluated ESS and ESS plus mini-Caldwell surgical procedures for recurrences, synechia, bleeding, and ostium stenosis. Overall, there were 27 men and 19 women. The ESS approach was used in 26 cases, and 20 cases had combined ESS and mini-Caldwell procedures. The statistical significant difference between the 2 groups was only recurrence (P < 0.05). In the ESS group, bleeding, synechia, and ostium stenosis were seen more than in the ESS + mini-Caldwell group, but there was no significant difference between the 2 groups in bleeding, synechia, and ostium stenosis (P > 0.05). We thought that lower rate of recurrence found in ESS + Caldwell group in this study was associated with better visualization of the maxillary sinus walls and, therefore, easier resection of the remnant polyp. We concluded that higher incidences of bleeding and synechia were related to the mucosal damage occurring in the septum and the inferior concha due to excessive manipulation of endoscope and surgical instruments.Öğe Clinical results and health-related quality of life in otoplasty patients using cartilage resection and suturing methods(Springer, 2014) Toplu, Yuksel; Sapmaz, Emrah; Firat, Cemal; Toplu, Sibel AltunisikIn this study, we evaluated clinical results and health-related quality of life in our otoplasty patients in whom we used cartilage resection method (CRM) and suturing method (SM). A total of 132 ears of 77 patients (36 males, 41 females; mean age 14.6 +/- 6.4) between January 2006 and February 2013 were included in this study. Patients were divided into two groups according to the type of surgery performed: Group 1 was the cartilage resection group (CRG) and Group 2 was the suturing group (SG). CRM was performed on 64 ears of 37 patients (unilateral in 10 cases and bilateral in 27 cases), and SM was performed on 68 ears of 40 patients (unilateral in 12 cases and bilateral in 28 cases). The parameters of the groups, including operation time, measurements of the auriculocephalic distances, complication rates, postoperative satisfaction rates, and health-related quality of life were compared. Mean operation time was 53.7 +/- 7.8 min in the CRG and 44.9 +/- 4.2 min in the SG (P a parts per thousand currency sign 0.05). Mean postoperative auriculocephalic measurements were similar in both groups. The complications were more frequent in the CRG (10/37 patients, 27.02 %) than in the SG (3/40 patients, 7.54 %) with statistically significant difference (P < 0.05). Three months after the surgery, visual analog scale increased from 25 (preoperatively) to 70 in the CRG and from 30 to 90 in the SG, with a statistically significant difference (P < 0.05). Patients' health-related quality of life showed a statistically significant increase after the operation in both groups (P < 0.05). CRM and SM are effective treatment methods with high success rates for patients with prominent ears. In the selected cases, SM seems to represent a better option for otoplasty than CRM because clinical results, cosmetic outcomes, patient satisfaction, and health-related quality of life scores were better than CRM.Öğe Congenital Aplasia of the External Ear Canal and Total Dehiscence of Mastoid-Tympanic Segment of the Facial Nerve as a Cause of Recurrent Facial Paralysis(Lippincott Williams & Wilkins, 2013) Toplu, Yuksel; Kalcioglu, Mahmut Tayyar; Karatas, Erkan; Bayindir, TubaFacial nerve (FN) macrodehiscence, in contrast to microdehiscence, generally occurs as a result of chronic otitis media and is rarely seen congenitally. A patient with normal hearing who had no history of ear disease or ear operation came to the clinic with recurrent facial paralysis (FP) and frequent blockage of the external ear canal with epithelial debris complaints. In the explorative ear surgery, we observed that the posterior wall of the external ear canal or tympanic ring was absent, a large external ear cavity was covered with a thin skin, the FN was under the skin, and the tympanic-mastoid segment of the FN and chorda tympani extending to the stylomastoid foramen was completely open. FP episodes were associated with the unprotected FN. To prevent an attack of FP, and to self-clean the external ears, mastoid obliteration surgery was performed, and the mastoid segment of the FN was covered with a conchal cartilage graft. This case was diagnosed as congenital aplasia of the external ear canal due to the tympanic bone aplasia-mastoid bone hypoplasia, and the dehiscence of the mastoid-tympanic segment of the FN, and as a cause of recurrent FP, has never to date been identified.Öğe Efeito da genisteina na ototoxicidade induzida pela cisplatina e estresse oxidativo(Assoc Brasileira Otorrinolaringologia & Cirurgia Cervicofacial, 2022) Tan, Mehmet; Toplu, Yuksel; Varan, Emrah; Sapmaz, Emrah; Ozhan, Onural; Parlakpinar, Hakan; Polat, AlaadinObjetivo: A cisplatina e um agente antineoplasico usado em adultos e criancas para o tra-tamento de diversas lesoes malignas. Pode causar ototoxicidade irreversivel. A genisteina e um fitoestrogeno que funciona como antioxidante e inibidor do ciclo celular ao inibir as enzi-mas DNA topoisomerase e tirosina-quinase. O efeito protetor da genisteina na prevencao da ototoxicidade induzida pela cisplatina e os niveis de estresse oxidativo foram investigados. Metodo: Trinta e dois ratos Sprague Dawley foram usados em 4 grupos (controle, cisplatina, cis-platina + genisteina, genisteina). As medidas das emissoes otoacusticas por produto de distorcao foram tomadas nos dias 1, 2 e 5 do protocolo do teste. Foram medidos os niveis sericos de malondialdeido, superoxido dismutase, catalase, glutationa peroxidase, estado antioxidante total, estado oxidante total e indice de estresse oxidativo. Resultados: A audicao do grupo cisplatina + genisteina foi melhor do que a do grupo cisplatina. Enquanto os parametros malondialdeido, estado oxidante total e indice de estresse oxidativo diminuiram significantemente no grupo cisplatina + genisteina em comparacao com o grupo cisplatina, o superoxido dismutase mostrou aumento significantemente (p < 0,05). Conclusao: A genisteina apresentou efeitos positivos contra a ototoxicidade com seu efeito antioxidante. Nivel de evidencia: Nivel 3. (c) 2021 Associacao Brasileira de Otorrinolaringologia e Cirurgia Cervico-Facial. Publicado por Elsevier Editora Ltda. Este e um artigo Open Access sob uma licenca CC BY (http:// creativecommons.org/licenses/by/4.0/).Öğe The Effect of Beta Glucan on Cisplatin Ototoxicity(Springer India, 2014) Bayindir, Tuba; Iraz, Mustafa; Kelles, Mehmet; Kaya, Serdar; Tan, Mehmet; Filiz, Aliye; Toplu, YukselThis study was undertaken to investigate the effect of betaglucan in ameliorating cisplatin ototoxicity. Rats were divided into four groups: cisplatin (C), cisplatin plus beta glucan (CB), beta glucan (B), and control (K). Distortion product otoacoustic emissions were elicited in 0th, 1st, and 5th days. For the group C differences were observed at 8,003 and 9,515 Hz between 0th and 5th days' measurements. In the group CB there were differences at frequencies of 3,996, 4,757, 5,660, and 6,726 Hz between 0th and 5th days' measurements. For the group B there were significant recovery in some frequencies. The observation of significant deterioration in terms of hearing in the group treated with cisplatin plus betaglucan may be suggested that depended on the increase of permeability and tissue conductance into the inner ear which may be caused by betaglucan. Further long-term follow-up studies by using different doses may clarify this matter.Öğe The Effect of Dexpanthenol on Ototoxicity Induced by Cisplatin(Korean Soc Otorhinolaryngol, 2016) Toplu, Yuksel; Sapmaz, Emrah; Parlakpinar, Hakan; Kelles, Mehmet; Kalcioglu, M. Tayyar; Tanbek, Kevser; Kizilay, AhmetObjectives. This study was aimed to investigate the protective effects of dexpanthenol (Dxp) on against cisplatin-induced ototoxicity. Methods. To examine this effect, distortion product otoacoustic emissions (DPOAEs) measurements and serum levels of oxidative and antioxidant status (including malondialdehyde, superoxide dismutase, catalase, glutathione, glutathione peroxidase, total oxidant status, total antioxidant status, and oxidative stress index) were evaluated. Thirty-two adult female Wistar albino rats were randomly divided into 4 equal groups; control (K), cisplatin (C), cisplatin plus Dxp (CD), and Dxp (D). In all groups DPOAEs measurements, between 996 and 10,078 Hz as DPOAEs and input/output functions, were performed on days 0, 1th, 5th, and 12th. Prior to death, the last DPOAEs measurements and blood samples were taken. Results. In the C group, statistically significant differences were detected at all frequencies between 0 and 5 days and 0 and 12 days measurements (P <0.05). Serum level of oxidant and antioxidant status were detected statistically significantly changed in this group versus K group (P<0.05). Contrary to the C group, in the CD group hearing ability was seen largely preserved at many frequencies and serum levels of all biochemical parameters were shifted toward normal values, similar to the K group. No significant differences were detected in the either D or K group's measurements. Conclusion. According to these results, Dxp may prevent cisplatin-induced ototoxicity.Öğe Endoscopic Transoral Resection of Parapharyngeal Osteoma: A Case Report(W B Saunders Co-Elsevier Inc, 2016) Yaslikaya, Serhat; Koca, Cigdem Firat; Toplu, Yuksel; Kizilay, Ahmet; Akpolat, NusretOsteoma is a benign, mesenchymal, slow-growing, osteogenic tumor commonly occurring in the craniofacial bones and is characterized by the proliferation of compact or cancellous bone. Solitary osteomas can be classified as peripheral (parosteal, periosteal, or exophytic) when arising from the periosteum or central (endosteal) when arising from soft tissue. Peripheral osteoma occurs most frequently in the paranasal sinuses. Other locations include the orbital wall, temporal bone, pterygoid processes, external ear canal, and, rarely, the mandible. Osteomas in the oromandibular region often appear in the jaw in the canine fossa, hard palate, and maxillary sinus and in the lower jaw in the inner mandible and outer circumference and lingual side of the molar region. At radiologic imaging, a peripheral osteoma of the mandible appears as a well-circumscribed, round to oval, mushroom-like radiopaque mass with distinct borders. Computed tomography is the best imaging modality for determining the location and actual extension of the lesion. Parapharyngeal space tumors are rare tumors of the head and neck region. Benign tumors of the parapharyngeal space are more common than malignant tumors. A foreign body sensation in the pharynx, difficulty with deglutition, and hoarseness are symptoms generally related to the position of the tumor. Upper airway obstruction, painful throat, unilateral tinnitus, trismus, dysarthria, glossopharyngeal neuralgia, and cranial nerve palsies are other reported symptoms. This report presents the case of a huge osteoma of the left mandibular condyle extending to the parapharyngeal space. (C) 2016 American Association of Oral and Maxillofacial SurgeonsÖğe Familial Mediterranean Fever in a Patient with PFAPA Syndrome(Galenos Yayincilik, 2015) Tekin, Mehmet; Konca, Capan; Gulyuz, Abdulgani; Toplu, YukselPeriodic fever, aphthous stomatitis, pharyngitis, adenitis (PFAPA) syndrome is one of the recurrent fever syndrome in childhood. Headache, abdominal pain, and joint pain can be seen in some patients, in addition to the classical signs. PFAPA attacks resolve with prednisolone. Membranous tonsillitis, lymphadenopathy, and occasionally aphthae were detected during each episode in a patient presenting with high fever, about 12 times until four years of age. All attacks were resolved completely with single-dose prednisolone in the patient, who was diagnosed with PFAPA syndrome. Genetic analysis was requested because of abdominal pain that was occasionally observed during attacks. Heterozygous mutation of M694V was detected through genetic investigation, and colchicine was initiated. The patient was diagnosed with familial Mediterranean fever (FMF) due to resolved abdominal pain and recurrent fever after colchicine therapy. It is known that some FMF patients benefit from prednisolone therapy. Therefore, other periodic fever syndromes should be excluded before the diagnosis of PFAPA and FMF should be considered in patients with PFAPA syndrome complaining of recurrent abdominal pain.Öğe Fungus Ball in Concha Bullosa: An Unusual Cause of Retro- orbital Pain(Lippincott Williams & Wilkins, 2014) Toplu, Yuksel; Toplu, Sibel A.; Can, Sermin; Kuzucu, CigdemFungus ball in the concha bullosa is an extremely rare disease. We described a case of the fungus ball in the concha bullosa in a 22-year-old woman. Preoperative diagnosis was based on nasal endoscopy and computed tomography scanning. The patient was endoscopically operated on. The examination of the removed material was reported as fungal infection. This case was found worth writing because of the location of the concha bullosa and its rare occurrence in this location.Öğe Giant Concha Bullosa Pyocele: An Unusual Cause of Rapidly Developing Nasal Obstruction(İnönü Üniversitesi Tıp Fakültesi Dergisi, 2014) Toplu, Yuksel; Bayındır, Tuba; Gullu, Serdar; Karatas, Erkan; Kızılay, AhmetConcha bullosa pyocele is an uncommon intranasal disorder and appears when concha bullosa becomes infected. In this pathology, middle concha may become expanded and can compress surrounding tissues. If it is not appropriately treated with the necessray surgical method, this pathology may lead to intracranial and orbital complications. In this paper, we would like to report a case of giant concha bullosa pyocele which has lead to nasal obstruction and headache for two months. The resection of the lateral wall of concha bullosa was performed by transnasal endoscopic procedure. No complications were seen during or after the operation. There were no complaints reported by the patient at the follow-up period and the control endoscopic nasal examination was completely normal. The study aims to provide a consciousness of concha bullosa pyocele in the diferential diagnosis of patients with rapidly developing nasal obstruction and headache.Öğe The mean platelet volume levels in children with PFAPA syndrome(Elsevier Ireland Ltd, 2014) Tekin, Mehmet; Toplu, Yuksel; Kahramaner, Zelal; Erdemir, Aydin; Gulyuz, Abdulgani; Konca, Capan; Uckardes, FatihObjectives:. To assess whether mean platelet volume (MPV) can be used as a marker in the differential diagnosis of periodic fever, aphthous stomatitis, pharyngitis, adenitis (PFAPA) syndrome. Methods: The leucocyte counts, thrombocyte counts, and MPV values of 57 children with PFAPA syndrome were recorded during an attack and an attack free period. These values were compared with a healthy control group of 55 individuals. Demographic features of the PFAPA patients group including age, gender and age of first attack, age at diagnosis, frequency of attacks, serum reactive protein (CRP) and erythrocyte sedimentation rate (ESR) were also recorded. Results: The MPV values of the children with PFAPA both during an attack and attack free period were found significantly lower than the MPV values of healthy control group (p < 0.001). Also, the MPV values of the children with PFAPA during an attack were significantly lower than in attack free periods (p < 0.001). The MPV values showed no correlation with leucocytes counts, CRP, and ESR during attacks. A 8.30 fl [area under the curve (AUC: 0.965)] optimal cutoff value of MPV with a sensitivity of 89.5% and specificity of 92.8% was determined during an attack in children with PFAPA. Conclusions: The MPV values during an attack and attack free period of patients with PFAPA is lower than in controls. The MPV values may be used as a marker in the differential diagnosis of PFAPA syndrome but more studies are needed and they should be prospective in order to validate this data. (C) 2014 Elsevier Ireland Ltd. All rights reserved.Öğe Middle turbinate angiofibroma: an unusual location for juvenile angiofibroma(Assoc Brasileira Otorrinolaringologia & Cirurgia Cervicofacial, 2018) Toplu, Yuksel; Can, Sermin; Sanli, Mukadder; Sahin, Nurhan; Kizilay, Ahmet[Abstract Not Available]Öğe A new classification for septal perforation and effects of treatment methods on quality of life(Assoc Brasileira Otorrinolaringologia & Cirurgia Cervicofacial, 2019) Sapmaz, Emrah; Toplu, Yuksel; Somuk, Battal TahsinIntroduction: Septal perforation is a condition characterized by toss of cartilage and/or bony structures along with the mucoperichondrium and mucoperiosteum lining them. The etiology includes a history of nasal surgery or trauma, nose picking, bilateral septal cauterization, overuse of nasal sprays, cocaine abuse, vasculitis, and malignancies. Objective: Comparison of quality of life in patients with septal perforation after conservative or surgical treatment, and a new approach for the determination of the diameter of the perforation from a different point of view. Methods: The diameter of septal perforation, total vertical diameter of septum, and horizontal diameter of the perforation were measured in a total of 34 patients. Nineteen of the patients underwent surgical septal perforation repair, and 15 of them received septal button application. The patients were asked to complete the Glasgow Benefit Inventory quality of life questionnaire. Results: The septal perforation successfully healed in 18 of 19 patients who underwent surgical treatment. The quality of life scores were statistically significantly higher in the surgical treatment group when compared to the button group (p <0.05). Conclusion: The septal perforation classification we propose would be beneficial for providing realistic dimensions, treatment methods, and surgical techniques. (C) 2018 Associacao Brasileira de Otorrinolaringologia e Cirurgia Cervico-Facial. Published by Elsevier Editora Ltda.Öğe Olfactory function, olfactory bulb volume, and quality of life after radiotherapy for nasopharyngeal cancer(Aves, 2021) Kaplan, Bilge Kurnaz; Kizilay, Ahmet; Kaplan, Fatih; Toplu, YukselObjective: Radiotherapy (RT) is the standard treatment for nasopharyngeal cancer (NPC). Various advers effects may occur after RT. In this study, we aimed to evaluate the advers effects of RT on the olfactory bulb and olfactory function in patients with NPC and describe the impact of these effects on the patients' quality of life. Methods: We investigated 21 patients with NPC who received RT at least 12 months earlier, in addition to 21 age- and sex-matched healthy controls. The participants underwent a detailed nasoendoscopic ear, nose, and throat examination. All participants received orthonasal olfaction tests and a nasopharyngeal magnetic resonance imaging scan to measure olfactory bulb volume; in addition, they filled out a quality of life questionnaire. Results: There was a significant difference between the orthonasal olfactory test results of the patients and controls (p<0.05). The left and right side olfactory bulb volume values of the patients and controls were statistically similar (p=0.07). There was a significant difference between the quality of life questionnaire results of the patients and controls (p<0.05). Conclusion: Olfactory dysfunction was present in the majority of patients with NPC who received RT.Öğe Otoplasty: results of suturing and scoring techniques(Springer, 2014) Toplu, Yuksel; Sapmaz, Emrah; Toplu, Sibel Altunisik; Deliktas, HacimIn this study, we evaluated our otoplasty surgery results in patients with prominent ears. A total of 76 ears in 42 patients (20 male, 22 female; mean age 14; range 6-34 years) who underwent otoplasty surgery under general anesthesia between April 2005 and February 2012 were evaluated retrospectively. Of the 76 surgical cases, while 65 were operated on for the first time (primary), 6 had had previous unsuccessful surgical interventions at other institutes (secondary) and 5 were our own revision surgery cases. Of the primary cases; 11 had unilateral and 27 had bilateral surgery. Postoperative follow-ups were performed at week one, months one, three and six and at 1 year. While 60 of the 65 primary surgeries and all 6 of the secondary surgeries had successful results, 5 cases required revision surgery. The revision otoplasty surgeries were found to be successful in all patients on follow-up visits. Otoplasty surgery is an effective treatment method with high success rates for patients with prominent ears.Öğe Prevalence of the Helicobacter pylori in the tonsils and adenoids(Assoc Brasileira Otorrinolaringologia & Cirurgia Cervicofacial, 2015) Bayindir, Tuba; Toplu, Yuksel; Otlu, Baris; Yakupogullari, Yusuf; Yildirim, Ozge; Kalcioglu, Mahmut TayyarIntroduction: There is an ongoing debate about the existence and effects of Helicobacter pylori (Hp) in adenotonsillar tissue. Objective: A clinical study was conducted to assess the existence of Hp in the adenoid and/or adenotonsillar tissues, which were surgically excised due to chronic adenotonsillitis. Methods: Phosphoglucosamine mutase gene for the detection of Hp and cytotoxin-associated gene as virulence gene were examined in 84 adenotonsillar tissues obtained from 64 patients and patients' serum by using polymerase chain reaction. Results: Hp IgG was detected in 57 (89%) patients' serum. A total of seven tissue samples from 64 patients (10.9%) were found positive for Hp DNA, of which five were adenoids and two were tonsil tissues. All polymerase chain reaction positive samples were also positive for the cytotoxin-associated gene, which is a virulence determinant for the organism. Conclusion: This study suggests that children are exposed to Hp at an early age of their life in this province. Hp may have a role in the pathogenesis of chronic adenotonsillitis, especially in endemic areas. (C) 2015 Associacao Brasileira de Otorrinolaringologia e Cirurgia Cervico-Facial. Published by Elsevier Editora Ltda. All rights reserved.Öğe The Protective Effect of Chrysin Against Cisplatin Induced Ototoxicity in Rats(Springer India, 2014) Kelles, Mehmet; Tan, Mehmet; Kalcioglu, M. Tayyar; Toplu, Yuksel; Bulam, NazireOtotoxicity is a common side effect of cisplatin chemotherapy. The aim of this study was to investigate the potential protective effect of chrysin against cisplatin-induced ototoxicity. Thirty-four adult female Wistar albino rats were separated into four groups: a cisplatin group (Group A), with cisplatin administered to ten rats once daily for three consecutive days at doses of 8 mg/kg body weight intraperitoneally (i.p.); a cisplatin plus chrysin group (Group B), with 8 mg/kg of cisplatin administered i.p. daily to ten rats for three consecutive days and 25 mg/kg of chrysin administered via oral gavage in a corn oil for 5 days: a chrysin group (Group C), with 25 mg/kg of chrysin administered via oral gavage in corn oil for 5 days to seven rats; and a control group (Group D), with 5 ml/kg of corn oil administered to seven rats via oral gavage for 5 days. Distortion product otoacoustic emission measurements were performed in the same ear of the rats under general anesthesia at baseline and on the first and fifth days after drug administration. No significant differences were noted between the measurements either in the chrysin group or in the control group. In the cisplatin group, there was a significant worsening of hearing compared to baseline and the measurements on the fifth day at all frequencies. In the statistical analysis, a statistically significant difference was observed at 5039, 6351, 8003, and 10078 Hz frequencies between the measurements on the first and fifth days. In the cisplatin plus chrysin group, there were statistically significant differences at frequencies of 2,003 and 5,039 Hz between the measurements at baseline and on the fifth day, at 3,175 and 5,039 Hz between the measurements on the first and fifth days, and at 8,003 and 100,078 Hz between the measurements at baseline and on the first day. According to these results, this study demonstrates that cisplatin-related ototoxicity can be prevented in rats by the administration of chrysin.
