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Shall We Resect the Tip of Manubrium Mallei in Tympanoplasty?
Ahmet Kutluhan,Gökhan Yalçıner,Gülnur Güler,Kemal Kösemehmetog(lu,Kazım Bozdemir,Akif Sinan Bilgen 대한이비인후과학회 2011 Clinical and Experimental Otorhinolaryngology Vol.4 No.1
Objectives. In tympanoplasty operations if perforation is related with malleus handle, malleus handle is desepithelised. We planned this research to investigate whether the epithelial remnants remain as a result of this desepithelisation or not. Methods. The 35 patients who were performed tympanoplasty operation were divided into two groups. In the first group which included 13 patients the tip portion of manubrium mallei were cut off without desepithelisation. In the second group which included 22 patients the tip portions of manubrium mallei were cut off after the meticulous desepithelisation. The presence of squamous epithelium was examined histopathologically on the specimens. Results. Squamous epithelium was observed in 9 of the 13 non-desepithelised specimens and in 6 of 22 desepithelised specimens. Conclusion. In tympanoplasty operations despite careful desepithelisation, squamous epithelial remnants may remain on the malleus handle. So the tip of manubrium mallei could be resected to prevent the future development of cholesteatoma.
Dursun Aras,Ozcan Ozeke,Serkan Cay,Firat Ozcan,Kazım Baser,Umuttan Dogan,Murat Unlu,Burcu Demirkan,Omac Tufekcioglu,Serkan Topaloglu 한국심초음파학회 2015 Journal of Cardiovascular Imaging (J Cardiovasc Im Vol.23 No.3
The clinical diagnosis of right ventricular (RV) cardiomyopathies is often challenging. It is difficult to differentiate the isolatedleft ventricular (LV) noncompaction cardiomyopathy (NC) from biventricular NC or from coexisting arrhythmogenic ventricularcardiomyopathy (AC). There are currently few established morphologic criteria for the diagnosis other than RV dilation andpresence of excessive regional trabeculation. The gross and microscopic changes suggest pathological similarities between, orcoexistence of, RV-NC and AC. Therefore, the term arrhythmogenic right ventricular cardiomyopathy is somewhat misleading asisolated LV or biventricular involvement may be present and thus a broader term such as AC should be preferred. We describe anunusual case of AC associated with a NC in a 27-year-old man who had a history of permanent pacemaker 7 years ago due tosecond-degree atrioventricular block.
Visual Evoked Potentials in Guillain-Barré Syndrome
Levent Güngör,,İnci Güngör,Hilal Eser Öztürk,Musa Kazım Onar 대한신경과학회 2011 Journal of Clinical Neurology Vol.7 No.1
Background and Purpose:Guillain-Barré syndrome (GBS) is an acute demyelinating polyneuropathy with various clinical features. Optic neuritis occurs in rare cases. In this study we determined the incidence and patterns of visual evoked potential (VEP) abnormality in GBS in association with ophthalmologic findings. Methods:Thirty-two patients with a diagnosis of GBS were included in the study. The correlation between pathologic VEPs and categories of neurologic deficit and electrophysiological findings were examined statistically. Results:The patients ranged in age from 19 to 77 years. Five cases (16%) had abnormal VEPs. All five of these patients exhibited increased P100 latency differences between the two eyes. Other abnormalities were prolonged p100 latency, increased interocular amplitude difference, and distorted p100 configuration. Pathologic signs on ophthalmologic examination were observed in 80% of patients with abnormal VEPs. VEP abnormality was never present in pure axonal forms. There was no significant correlation between pathologic VEP and cerebrospinal fluid protein level or categories of neurologic deficits. Conclusions:Involvement of the optic pathways is not a frequent finding in GBS. When present it is always asymmetric and generally accompanied with pathologic findings on ophthalmologic examination. VEPs may be abnormal in different clinical variants of GBS, and especially in demyelinating forms.
Non-Price Competition in the Port Sector: A Case Study of Ports in Turkey
Soner ESMER,Hong-Oanh NGUYEN,Yapa Mahinda BANDARA,Kazım YENİ 한국해운물류학회 2016 The Asian journal of shipping and Logistics Vol.32 No.1
Although the port sector has been facing increasing competition, there is limited research on how ports compete using non-price competition strategies. There are a few studies on non-price competition in the port sector. However they mainly focus on the marketing aspect. This paper seeks to fill this gap in the literature, especially from a combined marketing-economic perspective. Especially the paper’s main objective is to identify the determinants of non-price competition in the port sector and evaluate their effect on various aspects of non-price competition. We start with a general conceptual framework to explain how competition in the sector can be affected by various factors and then propose an analytical framework on non-price competition. The analytical model is then used to support the design of a survey questionnaire. Next, hypothesis tests are conducted using exploratory factor analysis (EFA) and structural equation modeling (SEM) and data collected from a survey of Turkish ports. Based on the analysis results, the implications for port management and future research are also discussed.
Tezcan Ezgi Akyildiz,Levendoglu Funda,Durmaz Mehmet Sedat,Kara Hasan,Batur Elif Balevi,Gezer Ilknur Albayrak,Korez Muslu Kazım 대한류마티스학회 2023 대한류마티스학회지 Vol.30 No.1
Objective: The aim of the present study is to assess carpal tunnel syndrome's (CTS’s) ultrasonography (US) and magnetic resonance imaging (MRI) findings in patients with psoriatic arthritis (PsA) and compare them with healthy controls. Methods: Thirty-nine PsA and twenty-eight healthy volunteers were examined in this study. Demographic and clinical features were recorded. CTS-6, a diagnostic algorithm, was used to estimate the probability of CTS. Electrodiagnostic study (EDS) was applied to all wrists included in the report, where the diagnosis of CTS was made by EDS. The cross-sectional area (CSA) of the median nerve was measured at pisiform bone level by US and MRI. Results: Regarding to the demographic characteristics, no statistically significant difference was found between the groups. Twelve of 39 (30.76%) PsA patients had CTS, whereas CTS was not detected in the control group (p=0.001). US and MRI showed increased median nerve CSA in PsA patients compared to healthy controls (p=0.005, p<0.001; respectively). Also, US and MRI showed increased median nerve CSA in CTS patients compared to others (p=0.002, p<0.001; respectively). The Pearson correlation coefficient between MRI and US measurements of the CSA was 0.85 (p<0.001). Conclusion: CTS frequency in PsA patients is found higher than healthy controls. The relationship between CTS diagnosed by EDS and CSA measured by both US and MRI was observed in PsA patients.