Browsing by Author "Gunhan, K"

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    Effect of CPAP therapy on catathrenia and OSA: a case report and review of the literature
    Songu, M; Yilmaz, H; Yuceturk, AV; Gunhan, K; Ince, A; Bayturan, O
    Introduction Catathrenia is a rare, idiopathic, sleep-related respiratory condition characterized by irregular groans, which occur during prolonged expiration in sleep. The origins of catathrenia remain inexplicable, the long-term prognosis unexplained. Moreover, empirical treatment with neither pharmacological nor non-pharmacological approaches was satisfactory. Case report We report a case of catathrenia with concurrent obstructive sleep apnea complicated with pulmonary hypertension and reviewed the literature. Discussion Treatment with nasal continuous positive airway pressure resulted in marked improvement of catathrenia, obstructive sleep apnea, daytime dyspnea, and pulmonary hypertension for our patient. We think that nasal continuous positive airway pressure can be an option for the treatment of this infrequent but sometimes very disturbing sleep disorder.
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    Intranasal steroids or radiofrequency turbinoplasty in persistent allergic rhinitis: effects on quality of life and objective parameters
    Gunhan, K; Unlu, H; Yuceturk, AV; Songu, M
    Nasal congestion is a cardinal symptom of allergic rhinitis (AR). It is associated with decreased quality of life and difficult to treat as perceived by the patients. The purpose of this study is to evaluate the mid-term objective and subjective outcomes of management of nasal congestion using intranasal steroid (INS) therapy or radiofrequency turbinoplasty (RFT) in patients with persistent AR who have mucosal hypertrophy of the inferior turbinate. Fifty-five adult patients with AR, who claimed nasal congestion refractory to oral antihistamine (desloratadine) therapy, were randomized to INS (mometasone furoate) or temperature-controlled RFT treatment groups. Outcomes were determined by active anterior rhinomanometry, visual analog scale (VAS), and rhinoconjunctivitis quality of life questionnaire (RQLQ) at least 12 months after treatment. The median total nasal resistance decreased from 0.49 +/- A 0.17 to 0.39 +/- A 0.12 Pa/cm(3)/s (p = 0.42), and from 0.51 +/- A 0.18 to 0.29 +/- A 0.07 Pa/cm(3)/s (p = 0.003) with INS and RFT, respectively. RFT provided a better reduction in the perception of congestion in VAS scores. RQLQ scores improved significantly in both groups 1 year after treatment (mean follow-up 14.2 months) (p < 0.05). No adverse reactions were encountered in either group. Nasal congestion refractory to antihistamine appears to be improved by INS at some point, while reduced significantly by RFT in objective and subjective parameters. Both options are also effective in increasing the quality of life in patients with AR. RFT might be a safe and effective treatment of option in AR compared with INS.
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    Predictive and prognostic factors for patients with locoregionally advanced laryngeal carcinoma treated with surgical multimodality protocol
    Eskiizmir, G; Toker, GT; Celik, O; Gunhan, K; Tan, A; Ellidokuz, H
    The prognosis is suboptimal in patients with locoregionally advanced laryngeal carcinoma even after multimodality protocols. The purpose of this study was to determine the potential influential factors that have an impact on the development of locoregional recurrence, distant metastasis, and oncological outcomes in patients with locoregionally advanced laryngeal carcinoma who had surgical multimodality protocols. A sample size of 85 cases was determined based on a power of 90% and an effect size of alpha (2) = 0.05. A retrospective analysis of 357 patients with a diagnosis of laryngeal cancer between 2002 and 2015 was performed. Eighteen variables based on sociodemographic, clinical, histopathological and treatment data were analyzed. Medical records of 85 consecutive patients with locoregionally advanced laryngeal carcinoma who underwent surgical multimodality protocols were reviewed. Five-year overall, disease-specific, disease-free, locoregional recurrence-free and distant metastasis-free survival were 68.7, 78.0, 69.6, 68.9 and 69.2%, respectively. Extracapsular extension was an independent predictive factor for locoregional recurrence. Pathologic tumor volume was an independent predictive factor for distant metastasis. pT-stage was an independent prognostic factor for 5-year overall survival, disease-free survival, locoregional recurrence-free survival and distant metastasis-free survival. High volume, pT4a laryngeal tumors with extracapsular extension are associated with a high risk of locoregional recurrence and distant metastasis; and have poor oncological outcomes in patients with locoregionally advanced laryngeal carcinoma treated with surgical multimodality protocols.
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    Novel Simple Strategy for Cartilage Tissue Engineering Using Stem Cells and Synthetic Polymer Scaffold
    Uz, U; Gunhan, K; Vatansever, S; Kivanc, M; Yuceturk, AV
    Cartilage created by tissue engineering is a promising new development in facial reconstructive surgery. The purpose of this study was to evaluate the histological results of implantation of synthetic polymer scaffold with chondrocytes differentiated from adipose-derived mesenchymal stem cells. Adipose tissue obtained from Wistar albino rats was dissociated, incubated and placed in culture medium. After a sufficient level of stem cell proliferation, the differentiation phase was started. Cells were collected on the 7th and 21st day of culture for chondrogenic characterization. After the 21st day of the differentiation phase of chondrocytes, they were transferred onto poly(dl-lactide-epsilon-caprolactone) synthetic polymer and culture continued for 24 hours. The scaffold with chondrocytes was then implanted into a subcutaneous area of skin on the back of the neck of the rat. Six weeks after implantation, all rats were sacrificed and the implantation areas were analyzed. Chondrocytes derived from adipogenic mesenchymal stem cells were stained positively with collagen II, aggrecan and Sox-9 after the differentiation stages. Histological examination of the excised material showed that chondrocytes were present, and the scaffold had been completely absorbed. The results of this study indicate that the differentiation method from mesenchymal stem cells to chondrogenic lineage was straightforward and scaffold with cells was easily accessible. This technique may be a good option for cartilage tissue engineering.
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    Efficacy of Leukotriene Antagonists as Concomitant Therapy in Allergic Rhinitis
    Cingi, C; Gunhan, K; Gage-White, L; Unlu, H
    Objectives/Hypothesis: The symptoms of allergic rhinitis result from an immunoglobulin E-dependent mast cell activation cascade, marked by the release of inflammatory mediators, including histamine. Patients with perennial allergic rhinitis also have elevated levels of cysteinyl leukotrienes (CysLTs) in nasal lavage fluid. Histamine and CysLTs produce different responses in the pathogenesis of allergic rhinitis, and this study tested the hypothesis that the effects of combined antihistamine and leukotriene antagonist therapy would be more effective than antihistamine alone. Study Design: Multicentered, prospective, randomized, placebo-controlled, parallel-group. Methods: Three groups totaling 275 patients using: 1) fexofenadine alone, 2) fexofenadine with montelukast, or 3) fexofenadine with placebo, participated in a 21-day trial conducted during the spring pollen season. Objective analysis included pre- and poststudy physical examination findings and nasal resistance measurements. Subjective data gathered included a daily patient diary and pre- and poststudy patient satisfaction measurements. Results: The group using both fexofenadine and montelukast showed significantly better control of nasal congestion both subjectively, using patient diary and visual analog scale evaluations, and objectively, using rhinomanometry and physical examination, compared to groups using antihistamine alone or with placebo. Conclusions: Our data provided both objective and subjective evidence that leukotriene receptor antagonist-antihistamine combination therapy is more effective than antihistamine alone in the control of allergic rhinitis symptoms.
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    13-93B3 Bioactive Glass: a New Scaffold for Transplantation of Stem Cell-Derived Chondrocytes
    Gunhan, K; Bariskan, S; Uz, U; Vatansever, S; Kivanc, M
    Research using animal models gives human trials hope for recovery in many fields of regenerative medicine, although they are sometimes poor predictors for human experiences. Our goal was to investigate whether rat chondrocytes, differentiated from adipose-derived stem cells, could be transplanted using a new, easily shaped, bioactive glass scaffold, and to show the immunohistochemical results. Intraperitoneal and retroperitoneal adipose tissue was extracted from 6 male Wistar albino type rats. The fatty tissue samples were fragmented and incubated. Chondrogenic differentiation was carried out and collagen type II, bFGF, and Sox-9 immunohistochemical characterization analysis was performed. Differentiated chondrocytes were implanted on 13-93B3 bioactive glass scaffolds and transplanted into the right ears of the rats. As control, only the biomaterial was transplanted into the left ears of the rats. After 1 month, the rats were sacrificed and transplantation areas were examined immunohistochemically. Histological examination of control samples from the left ears revealed that the biomaterial was covered with connective tissue, its general structure was preserved, and resorption of the scaffold had started. In specimens from the right ears, the biomaterial was covered with connective tissue, its structure was preserved, cartilage cells were present around the biomaterial, and the presence of cartilage tissue was demonstrated immunohistochemically. In conclusion, 13-93B3 bioactive glass scaffold contributed to the formation of new collagen and the survival of chondrocytes, and is a promising new biomaterial that will prove very useful in regenerative medicine.
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    Orbital exenteration: A dilemma in mucormycosis presented with orbital apex syndrome
    Songu, M; Unlu, HH; Gunhan, K; Rker, SS; Nese, N
    Background: Mucormycosis is an uncommon, rapidly progressive, commonly fatal, opportunistic, fungal paranasal sinus infection. The most critical decision in the management of rhino-orbital mucormycosis is whether the orbit should be exenterated. The literature fails to provide a broad base of information of how physicians determine the need for exenteration in daily practice. The decision for exenteration often depends on the judgment of the treating otolaryngologist. The authors report their experience and outline that orbital exenteration may not be mandatory in all cases of rhino-orbital mucormycosis. Methods: The medical records from Celal Bayar University Medical Faculty Department of Otorhinolaryngology/Head and Neck Surgery were retrospectively searched from 1995 to 2007 for three cases with rhino-orbital mucormycosis, treated without orbital exenteration. Results: All patients with rhino-orbital mucormycosis who were treated without exenteration survived. Conclusion: The favorable outcome was attributable to rapid correction of the underlying medical condition; wide local excision and debridement of all involved and devitalized sinonasal and periorbital tissue, while establishing adequate sinus and orbital drainage; daily endoscopic assessment with multiple sinus debridement when necessary; daily irrigation of the involved areas; and high-dose i.v. amphotericin B.
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    Impact of nasal polyposis on erectile dysfunction
    Gunhan, K; Zeren, F; Uz, U; Gumus, B; Unlu, H
    Background: Our male patients with chronic rhinosinusitis with nasal polyposis (NP) declare a better sexual function after functional endoscopic sinus surgery (FESS) with polypectomy. This study was planned to conduct the first prospective, controlled trial evaluating the possible relation between erectile dysfunction (ED) and NP by subjective and objective parameters. Methods: Thirty-three male patients with NP and thirty randomly selected male control subjects were evaluated. All subjects underwent assessments of nasal endoscopy, rhinomanometry, body mass index (BMI), Epworth Sleepiness Scale, full in-laboratory polysomnograpy and serum levels of glucose, thyroid hormones, lipid profile, and testosterone. ED was evaluated by the erectile function domain of the International Index of Erectile Function (IIEF-EF) subjectively and nocturnal penile tumescence (NPT) objectively. The NP group was reassessed 6 months after FESS. Results: The mean age, BMI, and laboratory tests of the patients and the control subjects had no significant difference. The well-recognized risk factors for ED were eliminated. Preoperative evaluation of the patients revealed that ED was present in 34 and 24% of the patients by IIEF-EF and NPT, respectively, which was significantly higher than the control group (p = 0.009 and p = 0.018, respectively). There was a significant improvement of ED in the assessment of IIEF-EF and NPT postoperatively (p = 0.014 and p = 0.037, respectively). Conclusion: ED was determined in a high percentage of patients with NP and significantly ameliorated after FESS. NP might present a risk factor in the development of ED. (Am J Rhinol Allergy 25, 112-115, 2011; doi: 10.2500/ajra.2011.25.3585)
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    Does maxillary arch remodeling exist in nasal polyposis?
    Gunhan, K; Can, F; Uz, U; Serter, S; Unlu, H
    Background: The potential transformation in the maxillary complex morphology is mostly complete during childhood. Recent studies suggest a nasal tissue remodeling both in the overlying mucosa and in the underlying sinus bone in nasal polyposis (NP). Our evaluation of computed tomography (CT) revealed that the maxillary arch is more flat and shallow in patients with chronic rhinosinusitis with NP. The purpose of this study was to determine the possible effects of NP to the maxillary arch morphology in adulthood and to investigate a possible remodeling of the maxillary bone during the course of NP. Methods: A prospective study was performed on 25 patients. Grading of the polyps, acoustic rhinometry and rhinomanometry assessments, and CT scans were documented initially, 1 year after diagnosis, and 2 years postoperatively. Twenty-five subjects' CT scans randomly selected from our CT database formed the comparison group. The plane angle between the maxillary alveolar processes (MAP) and the palatine process of the maxillary bone (MPP), and the depth of the maxillary arch of both groups were compared. Results: The results pointed out that the maxillary arch was shallower and the bilateral angles between MAP and MPP were significantly greater than those of the comparison group in all evaluation periods. This difference was less at the end of the postoperative follow-up period. Conclusion: Although it is a common belief that maxillofacial formation expires in childhood, this may not be the case under some special conditions such as NP in adulthood. NP might cause maxillary arch remodeling in adults. (Am J Rhinol Allergy 24, 428-432, 2010; doi: 10.2500/ajra.2010.24.3546)
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    Long-term results in endoscopic dacryocystorhinostomy: Is intubation really required?
    Unlu, HH; Gunhan, K; Baser, EF; Songu, M
    OBJECTIVE: The long-term (median follow-up eight years) results of endoscopic dacryocystorhinostomy approach and silicone intubation were evaluated by various aspects. STUDY DESIGN: Case series with planned data collection of 38 procedures for postsaccal stenosis were analyzed. SUBJECTS AND METHODS: Silicone intubation was not used in 19 of the randomly selected procedures. Anatomical and functional surgical success was evaluated subjectively and objectively. RESULTS: The patients' complaints improved in 84.2 percent of eyes in the intubation group, and in 94.7 percent of the group without intubation, with a mean follow-up of 112 and 96 months after surgery. respectively. Postoperative endoscopic examinations revealed that the rhinostomy opening was visible in 17 sides with intubation (89.5%) and IS sides without intubation (94.7%). CONCLUSIONS: Considering the similar surgical success rates. and disadvantageous factors such as granulation formation, patient discomfort. and cost related to intubation, we recommend endoscopic dacryocystorhinostomy without intubation as the treatment of choice in cases of chronic epiphora due to postsaccal stenosis of the lacrimal drainage system.
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    Turkish Guideline for Diagnosis and Treatment of Allergic Rhinitis (ART)
    Ecevit, MC; Özcan, M; Can, IH; Tatar, EC; Özer, S; Esen, E; Atan, D; Göde, S; Elsurer, C; Eryilmaz, A; Coskun, BU; Yazici, ZM; Dinç, ME; Ozdogan, F; Gunhan, K; Bilal, N; Korkut, AY; Kasapoglu, F; Türk, B; Server, EA; Çelebi, ÖÖ; Simsek, T; Kum, RO; Adali, MK; Eren, E; Aslier, NGY; Bayindir, T; Çetin, AC; Göker, AE; Güvenç, IA; Köseoglu, S; Özler, GS; Sahin, E; Yilmaz, AS; Güne, C; Yildirim, GA; Öca, B; Durmusoglu, M; Kantekin, Y; Özmen, S; Kubat, GO; Sanal, SK; Altuntas, EE; Selçuk, A; Yazici, H; Baklaci, D; Yaylaci, A; Hanci, D; Dogan, S; Fidan, V; Uygur, K; Keles, N; Cingi, C; Topuz, B; Çanakçioglu, S; Önerci, M
    Object: To prepare a national guideline for Oto-rhinolaryngologist who treat allergic rhinitis patients Methods: The study was conducted by three authors, namely the writing support team. The support team made the study plan, determined the writing instructions, chose the subgroups including the advisory committee, the advisors for authors and the authors. A workshop was organized at the very beginning to explain the details of the study to the team. Advisors took the chance to meet their coworkers in their subgroups and determined the main headings and subheadings of the guideline, together with the authors. After key words were determined by the authors, literature search was done in various databases. The authors keep in touch with the advisors and the advisors with the advisory committee and the support group at every stage of the study. National and International published articles as well as the abstracts of unpublished studies, imperatively presented in National Congresses, were included in this guideline. Only Guideline and meta-analyses published in last seven years (2013- 2017) and randomized controlled studies published in last two years (2015- 2017) were included. After all work was completed by the subgroups, support team brought all work together and edited the article. Results: A detailed guideline about all aspects of allergic rhinitis was created. Conclusion: The authors believe that this guideline will enable a compact and up-to-date information on allergic rhinitis to healthcare professionals. This guideline is the first in the field of Otolaryngology in Turkey. It should be updated at regular intervals.