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Search Results: 1 - 10 of 434356 matches for " Fatih Kür?at F?rat "
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The 2011 Earthquake in Simav, Turkey and Seismic Damage to Reinforced Concrete Buildings
Adem Do?angün,Ali Ural,Halil Sezen,Yücel Güney,Fatih Kür?at Frat
Buildings , 2013, DOI: 10.3390/buildings3010173
Abstract: Reinforced concrete buildings suffered significant damage in the region affected by the 29 May 2011 earthquake in Simav (Kutahya), Turkey. Typical building damage is classified and potential causes of damage are investigated. Reinforced concrete moment resisting frames with hollow brick infill walls are the most common structural system in and around the Simav city center while masonry construction is common in rural areas. Although the Simav earthquake, with a magnitude of 5.7 to 5.9, can be classified as a moderate earthquake, many buildings experienced damage varying from frequent diagonal cracking and brittle failure of infill walls to collapse or severe damage to frames due to short columns, soft stories or other reasons including insufficient or poor detailing of reinforcement. This study investigates and presents the seismicity of the region, characteristics of the measured ground motions, seismic load demands including response spectra, and damage mechanisms, potential causes and classification of observed damage in reinforced concrete buildings.
Surgical second-look in epithelial ovarian cancer: high recurrence rate after negative results and lack of survival benefit limits its role in standard management
Salih Ta?k?n,Mete Güng?r,Elif Aylin Ta?k?n,Frat Orta?
Journal of the Turkish-German Gynecological Association , 2011,
Abstract: Objective: To evaluate the role of surgical second look (SSL) in epithelial ovarian cancer. Material and Methods: One hundred and seventy-one patients clinically free of disease were assessed retrospectively. Ninety-eight (57.3%) patients underwent SSL and 73 (42.7%) were observed. Fifty-one (52.0%) of the SSL operations were negative, 31 (31.6%) microscopically positive, and 16 (16.3%) macroscopically positive. Cytoreduction and∕or chemotherapy were administered after positive SSL. Negative SSL and observation group patients were observed without treatment until recurrence was detected. Disease free survival (DFS), overall survival (OS) and clinical characteristics of groups were compared. Results: While DFS and OS of negative SSL group were better than the observation , microscopic and macroscopic positive SSL groups (p<.01), no significant difference was found between positive SSL and observation groups (p>.05). However, DFS and OS of the microscopic positive SSL group were significantly longer than the macroscopic positive SSL group (p<.01). Thirty-two patients have had recurrences (62.8%) after negative SSL. Only the use of paclitaxel as first-line chemotherapy was seen to prevent recurrence after negative SSL (p<.05). Recurrence after negative SSL was not affected by stage, grade, age, CA-125 level, ascites volume, histologic type or optimal cytoreduction. Conclusion: Rate of recurrence after negative SSL remains high, and secondary efforts following positive SSL could not lead to an obvious survival benefit. Therefore, routine use of SSL seems ineffective and unnecessary.
A case of fatal endocarditis due to Suttonella Indologenes
Frat ?zcan,Ali Y?ld?z,Mehmet Fatih ?zlü,Mehmet Do?an
Anadolu Kardiyoloji Dergisi , 2011,
Abstract:
Diagnostic accuracy of P-wave dispersion in prediction of maintenance of sinus rhythm after external cardioversion of atrial fibrillation
Nurcan Ba?ar,?zgül Mal?ok Gürel,Frat ?zcan,Mehmet Fatih ?zlü
Anadolu Kardiyoloji Dergisi , 2011,
Abstract: Objective: P-wave dispersion (PWD) is an electrocardiographic measurement, which reflects a disparity in an atrial conduction. In this study, we aim to demonstrate the diagnostic accuracy of PWD in predicting recurrence of atrial fibrillation (AF) in patients with sinus rhythm restoration after external cardioversion. Methods: This prospective, observational study consists of 26 patients, who underwent external cardioversion for non-valvular persistent AF and successfully cardioverted to sinus rhythm (13 men, mean age 58.1±11 years). Twelve-lead surface electrocardiogram of each patient was recorded immediately after the external cardioversion process to measure the P-wave duration. Recurrent AF was assessed for each patient during the 12-month follow-up after restoring the sinus rhythm. Patients were divided into the 2 groups with respect to the AF recurrence (recurrent AF group, (n=19), and sinus rhythm group, (n=7)) and variables that can affect AF development were compared between the two groups. Stepwise logistic regression analysis was used to identify the independent predictors of AF recurrence and ROC curve analysis was performed to determine the cut-off value of independent factors.Results: The two groups have similar demographic, clinical and echocardiographic features. Patients with recurrent AF had significantly higher PWD than those who continued to have a sinus rhythm (80±21 msec vs 53±11 msec, p=0.001, respectively). There is a positive correlation observed between the increase in PWD and the risk of AF recurrence (r=0.643; p<0.001). In logistic regression analysis, PWD was found to be an independent predictor of AF recurrence (OR 1.192 (95% CI 1.032-1.375), p= 0.013). Receiver operating characteristic analysis revealed that the best cut-off value of PWD for maintenance of sinus rhythm was 58 msec (sensitivity: 86%, specificity: 95%, AUC=0.917, 95% CI=0.785-1.05, p=0.001).Conclusion: This study suggests that PWD analysis after successful external cardioversion has diagnostic accuracy to predict the recurrence of AF.
The relationship between mean platelet volume and mortality in patients in intensive care unit
Ya?ar Altun,Fatih Demircan,Frat Zafer Mengelo?lu,Mehmet Namuslu
Journal of Clinical and Experimental Investigations , 2011,
Abstract: Objectives: In this study we aimed to investigate the mortality rate and the effect of mean platelet volume (MPV) which is a reliable parameter of Glascow Coma Scale (GCS) and thrombocyte function on the mortality of the patients in intensive care unit (ICU).Materials and methods: Data of consecutive 300 patients who interned in ICU were examined retrospectively and 119 patients of those were included in the study. GCS and MPV values, the mortality rate, length of stay in ICU and the mechanic ventilation duration of the patients were calculated. The level and volume of thrombocyte was measured by Beckman Coulter LH 780.Results: The most of our patients were interned from the emergency room (n:116). Fifty-one patiens were transferred to other departments and 19 patients were discharged. The number of the patients who died was 49 and the mortality rate was 41.2%. The mean GCS of survived patients (9.24±1.22) was significantly higher than the mean GCS of dead patients (6.78±1.76) (p<0.001). No statistically significant difference was found between the mean MPV values of the survived patients (8.87±1.34) and the dead patients (9.15±1.65) (p>0.05). Forty-four of 47 patients who had mechanic ventilation died.Conclusion: MPV values of the survived and dead patients were similar. GCS was found associated with mortality. This study supports that MPV values in admission to ICU don’t effect the mortality. J Clin Exp Invest 2011; 2 (4): 408-411
An examination of some physical fitness and somatotype characteristics of Turkish national police
Ali ?zkan,Gürhan Kay?han,Yusuf K?klü,Frat Ak?a
International Journal of Human Sciences , 2012,
Abstract: The purpose of this study was to determine physical fitness and somatotype characteristics of Turkish National Police. A total of 351 male police from a Turkish General Directorate of Security participated in this study voluntarily ( :21.49±1.06 yrs). Subjects’ height, body weight, body mass index, body fat percentage and somatotype characteristics were determined. Body fat percentage was determined by Jackson & Pollock formula and somatotype properties were determined according to Heath-Carter system. The sit and reach test was used for the determination of flexibility, the visual reaction test was used for determination of reaction time, the counter movement (CMJ) and squat jump (SJ) tests were used for the determination of anaerobic performance,10-30 meter transition (speed) times were used for the determination of sprint performance and 1-mile run test was used for determination of determined of maximal oxygen consumption capacity (VO2max). Results indicated subjects have normal body mass index (22.11 ± 2.05), low body fat percentage (8.51 ± 2.87) and ectomorphy-mesomorphy properties (2.67-4.59-2.96). Results of flexibility, visual reaction values was 30.45±5.9 cm, 420.47±43.87. Anaerobic performance; the anaerobic power of CMJ, relative CMJ, SJ and relative SJ values of subjects were 948.49±121.27 watt, 13.40±.90 watt/kg, 899.99±117.83 watt and 12.71±.89watt/kg respectively while the 10m, 30m and VO2max values was 1.75±.07, 4.35±.18 second and 52.4±2.0 respectively. As a conclusion, the findings of the present study indicated that Turkish National Police have good physical fitness and somatotype characteristics.
Effects of High Dose and Long Term Montelukast Treatment on Skin:An Experimental Rat Study
Kaan Gidero?lu,Mualla Polat,Tülin Frat,Aysel Kükner
Turkderm , 2008,
Abstract: Background and Design: The aim of this study was to assess the effects of long term, high dose montelukast administration on normal rat skin by histological examination.Material and Method: Sixteen rats were randomly divided into 2 groups-the control and the montelukast treated (study) group (n=8). In the control group 0.2ml of 0.9% NaCl was administered intraperitonealy (i.p.) daily for 6 weeks. In the study group the same amount of solution containing 1 mg/kg montelukast was administered i.p. daily for six weeks. At the end of the 6 weeks skin biopsies were taken and histologically examined.Results: There was no significant difference between two groups regarding the dermal and epidermal thickness. Histologic examination of collagen fiber structure did not show difference between two groups. Toluidin blue stained specimens showed that the number of mast cells in dermis significantly decreased in montelukast treated group (p=0.001). Conclusion: Montelukast treatment has significantly decreased the number of mast cells in dermis without any effect on the dermal or epidermal thickness and collagen fiber structure. We think that with the support of further studies, high dose montelukast may have an effective role on the treatment of inflammatory skin disease. (Turkderm 2008; 42: 118-21)
Demand, usage and postoperative assesment of the donor cornea and evaluation of the information returning from the Eye Banks
Sad?k ?encan,Burcu Asarkaya,Harun Bilen,Frat Helvac?o?lu
Medical Journal of Bakirk?y , 2005,
Abstract: The ophthalmologists who want to make keratoplasty within the borders of Turkey have some legal rights and duties. To make them remember these rights and duties and to protect them from punishment and to teach them the rules of correspondence with the eye banks, the laws of T.C and H.M and the forms of USA Eye Bank Association, Istanbul Medicine Lions Eye Bank, Haseki Eye Bank were explained. The principles of form filling, medical factors affecting the quality of the cornea as well as success of the operation and the legal and medical facts that the surgeon must take into consideration were indicated. The meticulous studies of the eye banks to protect the high standards were pointed out. Lastly, the ophthalmologists were advised to work with experienced and reliable eye banks.
How to found an eye bank
Sad?k ?encan,Harun Bilen,Frat Helvac?o?lu,Hasan O?uzhan
Medical Journal of Bakirk?y , 2005,
Abstract: The cornea which has lost its function and transparency by any reason is changed with cornea taken from a dead body. The journey of cornea from the time it is taken from a dead body in a morgue up to the time it is placed into the recipient’s eye in an operating room takes place in a legal and scientific discipline. The foundation which provides the cornea to the ophthalmologist in this discipline is the eye bank. The aim of this article is to introduce these foundations to the ophthalmologist and review how to get a scientifically prepared cornea while protecting the ophthalmologist from prosecution.
Changes in left ventricular functions after coronary artery by-pass surgery
Celal Yavuz,Frat Ayaz,A?k?n Ender Topal,Zuhal At?lgan
Journal of Clinical and Experimental Investigations , 2010,
Abstract: Objectives: The aim of this study was to evaluate the left ventricular functions with transthoracic echocardiography after coronary bypass surgery.Methods: Sixty-four patients who underwent coronary bypass surgery between January 2008 and March 2009 were retrospectively evaluated. The diagnosis, age and gender of the patients, presence of diabetes mellitus and/or hypertension, smoking, and left ventricle functions before and after surgery were recorded.Results: The mean age of the patients was 58 ± 6,2 years. Forty-four of 64 patients were male, and 20 were female. The lowest ejection fraction was measured in two patients as 30% preoperatively. The mean preoperative and postoperative left ventricle ejection fractions were 48 ± 5.4% and 58 ± 2.4% respectively. This difference was found statistically significant. The mortality rate of by-pass surgery was 4.68% (3 patients).Conclusion: The left ventricular functions were significantly recovered after coronary by-pass surgery.
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