Mehmet Guven
Sakarya University
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Featured researches published by Mehmet Guven.
International Journal of Pediatric Otorhinolaryngology | 2014
Mahmut Sinan Yilmaz; Mehmet Guven; Oznur Akidil; Gurkan Kayabasoglu; Deniz Demir; Hasan Mermer
OBJECTIVES The aim of this study is to evaluate the outcomes of septoplasty and the effects of septoplasty on the quality of life and to determine postoperative patient satisfaction in children using nose obstruction symptom evaluation (NOSE) and visual analog scale (VAS). METHODS Only pediatric patients who underwent septoplasty were included in the study. Patients who underwent adenoidectomy, endoscopic sinus surgery, or turbinate surgery in addition to septoplasty and total septal reconstruction with open technique septorhinoplasty were excluded from the study. Patients and their parents were inquired about their nasal obstruction symptoms using the NOSE scale before and 3 and 12 months following the surgery. VAS was used to analyze overall satisfaction of the patients and their parents on the outcomes of surgery, at the last follow-up examination 12 months after the surgery. RESULTS Thirty-five patients with a mean age of 13.4 ± 2.8 (8-16) were included in the study. There was a very significant improvement in NOSE score at 3 months after septoplasty. The mean subjective satisfaction score measured with VAS at the 12th month postoperatively was 7.9 ± 2.1. Improvement in NOSE score was correlated with patient satisfaction. CONCLUSION Septoplasty is a very effective and satisfactory treatment for nasal obstruction caused by nasal septal deviation in children. The NOSE scale can be used for the evaluation of nasal obstruction symptoms.
Otolaryngology-Head and Neck Surgery | 2013
Mahmut Sinan Yilmaz; Mehmet Guven; Sultan Sevik Elicora; Recep Kaymaz
Objective The purpose of this study is to examine the usability of biodegradable synthetic polyurethane foam (BSPF) after septoplasty by comparing it with Merocel and silicone intranasal splints as packing materials in terms of patient comfort and efficiency. Study Design A prospective, unmasked, randomized trial. Setting A tertiary referral center. Subjects and Methods This study was designed to be a prospective, randomized clinical trial. Sixty-eight patients who underwent septoplasty were included in this study. The patients were randomized to receive Merocel, silicone intranasal septal splint (INS), or BSPF after septoplasty. Clinical efficacy on bleeding, pain, and subjective symptoms related to packing materials was evaluated. Results There was a statistically significant difference between the Merocel group and the other 2 groups in terms of bleeding and adhesion. The average score on the pain scale was 2.47 ± 1.01 for BSPF, 3.68 ± 1.27 for INS, and 6 ± 2.21 for Merocel. Scores on general satisfaction scales were 6.95 ± 1.42 for Merocel, 8.44 ± 2.12 for INS, and 8.28 ± 1.88 for BSPF. Conclusion The efficacy of BSPF was comparable with that of Merocel and INS. Biodegradable synthetic polyurethane foam significantly reduced pain and patient discomfort during packing and removal, followed by INS, compared with Merocel.
Otolaryngology-Head and Neck Surgery | 2013
Mehmet Guven; Oguz Karabay; Oznur Akidil; Mahmut Sinan Yilmaz; Muzaffer Yıldırım
Objective Staphylococcal exotoxins have been reported in the pathogenesis of many chronic inflammatory diseases. Recent reports have hypothesized that staphylococcal exotoxins might be related to inflammatory mucosal changes seen in chronic sinusitis with nasal polyps (CRS-NPs). Staphylococcal exotoxins have the capacity to act as superantigens (SAgs), bypassing normal antigen processing and directly stimulating a massive inflammatory response. The objective of this study was to analyze polyp tissue samples from patients with antrochoanal polyps (ACPs) and CRS-NPs for the presence of staphylococcal exotoxins. Study Design Prospective cohort study. Setting Tertiary medical center. Subjects and Methods Tissue samples were obtained from 29 patients and 16 controls. Thirteen of 29 patients had ACPs, and 16 had CRS-NPs. Specimens were analyzed for the presence of 5 staphylococcal exotoxins (SEA, SEB, SEC, SED, and toxic shock syndrome toxin–1) using enzyme-linked immunosorbent assay (ELISA). Results At least 1 toxin was detected in 7 of 13 patients with ACPs and in 13 of 16 patients with CRS-NPs, whereas it was detected in only 4 controls. There were no statistically significant differences between ACP and control groups (P = .063). Our results showed a statistically significant association between toxin detection and patients with CRS-NPs (P = .003). Conclusion Inflammatory triggers in ACP remain a subject of debate, and this study does not support the hypothesis that staphylococcal exotoxins may play a role in ACP ethiopathogenesis. Our research is consistent with the possibility of SAgs as etiological agents in the development of bilateral nasal polyposis.
Otolaryngology-Head and Neck Surgery | 2012
M. Sinan Yilmaz; Mehmet Guven; Deniz Gin Buyukarslan; Recep Kaymaz; Unal Erkorkmaz
Objective. This study aims to compare the effects of Merocel nasal packs and silicone nasal septal splints with integral airway on the ventilation and pressure of the middle ear when applied intranasally after septoplasty for isolated septal deviation. Study Design. A prospective, randomized trial. Setting. A tertiary referral center. Subjects and Methods. Fifty-one patients who underwent septoplasty for nasal respiratory impairment caused by septal deviation were randomized into 2 groups. After septoplasty, bilateral anterior Merocel nasal packs were applied in one group, while silicone nasal septal splints with integral airway were applied in the other group. Middle ear pressures were compared using preoperative and post-operative tympanometry. Results. Pathological decrease in the middle ear pressure in at least 1 ear was determined in 17 patients (73.9%) in the Merocel group compared with only 6 patients (21.4%) in the silicone nasal septal splint group at the 48th postoperative hour. In the first 24 hours following surgery, decreases in tympanometric pressures were seen in both groups, but more in the Merocel group. After 24 hours, middle ear pressures continued to decrease in the Merocel group but started to increase in the silicone nasal septal splint group. Conclusion. Because they allow inhalation through the nose and cause less Eustachian tube dysfunction than Merocel, using silicone nasal septal splints with integral airway instead of packing after septoplasty seems a more reasonable option.
Journal of Craniofacial Surgery | 2013
Mahmut Sinan Yilmaz; Mehmet Guven; Ali Fuat Varlı
Objective This study aims to evaluate the efficacy of closed reduction and the effects of timing and fracture types on patient satisfaction. Methods Only patients with isolated nasal fractures were included in the study. Patients with additional maxillofacial fractures and patients whose application time to our clinic was more than 10 days after the trauma were excluded. Patients were classified into 5 types according to their fracture. All patients underwent closed reduction and external fixation under local anesthesia. Patients were asked about their satisfaction in a survey at 28th day and sixth month after the surgery. Patients were divided into groups according to fracture type and intervention time, and the results of the survey were evaluated. Results Of the 43 patients included in the study, 38 were male, 5 were female, and the average age was 24.9. The average intervention time of the patients was 5.44 days. Twenty-eight (65%) of 43 patients were satisfied with the result, whereas 15 (35%) patients were not happy with their operation. In a comparison of patient satisfaction rates according to fracture type, the mild fracture group had a higher satisfaction rate compared to the severe fracture group. Conclusion Closed reduction is an easy and sufficient treatment for nasal fractures, especially for mild nasal fractures. Early intervention raises the patient satisfaction rate.
Journal of Craniofacial Surgery | 2015
Gurkan Kayabasoglu; Alpen Nacar; Mahmut Sinan Yilmaz; Aytug Altundag; Melih Cayonu; Mehmet Guven
Background:In this study, we aimed to present a novel application and use of Kirschner wire–guided suturing that is less invasive and allows permanent fixation for nasal dorsal reconstruction. Methods:A total of 23 patients, who underwent surgery between 2009 and 2013, were included in this study: 19 with saddle nose deformity and 4 patients with keystone area damage, or collapse of the dorsal nasal support during primary septoplasty or rhinoplasty. The patients were asked to fill out a nasal obstruction symptom evaluation (NOSE) scale preoperatively and at the postoperative sixth month to assess breathing quality. The patients were followed up for complications such as nasal dorsal contour irregularity, dorsal collapse, as well as graft malposition and infections. The results of the surgeries were assessed on the basis of preoperative and postoperative examinations, septal support test, NOSE scale results, and photographic comparison. Results:The mean (SD) NOSE scales were 78.91 (10.09) and 30.48 (10.71) in the preoperative and postoperative periods, respectively. The difference of mean NOSE scale was statistically significant (P < 0.001). None of the patients experienced nasal dorsal collapse or graft malposition. Two patients had nasal dorsal irregularity complaints owing to inadequate costal cartilage edge beveling. None of the patients had complications of suture reaction, suture visibility, or suture extrusion. All of the patients stated that they were happy with the cosmetic outcome. Conclusions:Permanent sutures introduced through channels made with the Kirschner wire provide a less invasive, cosmetically pleasing, and functional solution, promising more reliable results in the long term.
Auris Nasus Larynx | 2015
Gurkan Kayabasoglu; Mahmut Sinan Yilmaz; Aytug Altundag; Melih Cayonu; Ali Fuat Varlı; Mehmet Guven
OBJECTIVE To evaluate long-term results of septal bone grafting and to show sustainable viability of bone grafts with objective parameters such as computed tomography. METHODS Nasal septal bones were used as splinting grafts during septo/rhinoplasty operations in 27 patients (Male=16; Female=11) between 2009 and 2013. Of these, only the 21 patients who were monitored long-term and who had computed tomography (CT) records were included in this investigation. The average duration of monitoring for the patients reported here was 17 (12-37 months) months. Patients were excluded for the following reasons: pregnancy; morbid obesity; uncontrolled diabetes; long-term oral steroid or chemotherapeutic agent use; inflammatory, systemic or immunodeficiency disease or acute local infections at the operative site. Bone graft positions, lengths and respective resorption were evaluated and compared pre-postoperatively for each patient. RESULTS Bone grafts retained 90% of their lengths in 14 of the 21 (66.6%) patients. In other cases, control computed sinus tomography showed four bone grafts at 80%, two grafts with 70%, and one graft retained 60% of the original lengths. None of the grafts showed resorption less than 50%. CONCLUSION Bone grafts are reliable grafts and can be used as an alternative to cartilage grafts.
European Archives of Oto-rhino-laryngology | 2018
Ahmet Kara; Mehmet Guven; Mahmut Sinan Yilmaz; Deniz Demir; Halil Elden
IntroductionThe aim of this study is to explore the relationship of neutrophil, platelet and eosinophil-to-lymphocyte ratios and red blood cell distribution width values with nasal polyposis, and whether this could be a predictive parameter that can be used for the severity and recurrence risk of the disease.MethodNeutrophil/lymphocyte, platelet/lymphocyte, eosinophil/lymphocyte ratios and red blood cell distribution width values were compared between nasal polyposis patients who were reviewed in a retrospective manner and the control group comparable for age and sex. Moreover, the nasal polyposis group was grouped for nasal polyposis severity and recurrence, and these subgroups were statistically compared, too.ResultsWhen the nasal polyposis patient group and the control group are compared, no statistically significant difference was found between two groups except for eosinophil/lymphocyte ratio. While only the difference between nasal polyposis severity and eosinophil/lymphocyte ratio is statistically significant, there was no parameter with statistically significant difference for recurrence.ConclusionWe think that caution should be exercised when using these new hematological parameters which can be affected by many factors for the presence, severity and recurrence risk of nasal polyposis, and literature data should be proven by conducting different and objective studies on this subject.
Journal of Laryngology and Otology | 2016
D Demir; K Asil; Mehmet Guven; Unal Erkorkmaz
OBJECTIVE To measure the dimensions of compensatory hypertrophy of the middle turbinate in patients with nasal septal deviation, before and after septoplasty. METHODS The mucosal and bony structures of the middle turbinate and the angle of the septum were measured using radiological analysis before septoplasty and at least one year after septoplasty. All pre- and post-operative measurements of the middle turbinate were compared using the paired sample t-test and Wilcoxon rank sum test. RESULTS The dimensions of bony and mucosal components of the middle turbinate on concave and convex sides of the septum were not significantly changed by septoplasty. There was a significant negative correlation after septoplasty between the angle of the septum and the middle turbinate total area on the deviated side (p = 0.033). CONCLUSION The present study findings suggest that compensatory hypertrophy of the middle turbinate is not affected by septoplasty, even after one year.
International Journal of Pediatric Otorhinolaryngology | 2016
Deniz Demir; Oguz Karabay; Mehmet Guven; Gurkan Kayabasoglu; Mahmut Sinan Yilmaz
OBJECTIVES Staphylococcal enterotoxins (SEs), acting as superantigens, have been reported to be involved in the pathogenesis of chronic inflammatory diseases of the upper and lower airway. There has been no previous study investigating the role of SEs in otitis media with effusion (OME). Therefore, this study was designed to analyze middle ear aspirates from children with and without OME for the presence of SEs. METHODS Middle ear aspirates were obtained from 24 patients and 24 controls. All samples were processed for bacterial culture and detection of five staphylococcal SEs (SEA, SEB, SEC and SED) and toxic shock syndrome toxin-1 using the Rapid Latex Agglutination Test. RESULTS In bacterial culture assays, six samples (25%) of the study group and five samples (20.8%) of the control group showed bacterial growth. At least one SE was demonstrated in 6 of 24 patients and in 3 of 24 controls. There was no statistically significant difference between the two groups with respect to the presence of SEs. CONCLUSION Although there is evidence that SEs have a potential role in the pathogenesis of chronic inflammatory diseases, there is no evidence that the inflammation process is initiated by SEs in patients with OME.