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Öğe Effect of Ascitic Media Formed by Glycerin on the Prevention of Peritoneal Adhesions(KARGER, 2009) Aksoy, Fatih; Vatansev, Celalettin; Tekin, Ahmet; Pamukcu, A.; Küçükkartallar, T.; Yılmaz, Hüseyin; Vatansev, HüsamettinAim: We aimed to investigate whether or not artificial ascites media formed using glycerin are effective in the prevention of intraperitoneal adhesions. Methods: Thirty-six Wistar albino male rats were used in the study. The rats were divided into 3 groups as follows. Group I: control group; group II (isotonic group): 3 ml of 0.9% NaCl was injected into the peritoneal cavity, and group III (glycerin group): 0.5 ml of liquid glycerin and 3 ml of 0.9% NaCl was injected into the peritoneal cavity. Results: There were serious adhesions in the control group. Adhesion rates were lower in the isotonic group compared with the control group, but the difference was not statistically significant (p > 0.05). When adhesion rates of the glycerin group were compared with the control and isotonic groups, significant differences were found, especially between the glycerin and control groups (p < 0.05). Conclusions: According to the results of our study, the use of isotonic solution and liquid glycerin decreases postoperative adhesions. We suggest that glycerin was more effective as it has the chemical ability to draw water to its media. As such, the formation of adhesions may be decreased by increasing the amount of physiological liquid inside the abdomen. Copyright (C) 2009 S. Karger AG, BaselÖğe The Effects of Splenic Artery Ligation in an Experimental Model of Secondary Hypersplenism(Royal College Surgeons Edinburgh, 2000) Şahin, Mustafa; Tekin, Şakir; Aksoy, Fatih; Vatansev, Hüsamettin; Şeker, Muzaffer; Avunduk, Mustafa Cihat; Kartal, AdilObjective: To induce hypersplenism in rats by splenic vein ligation and to investigate the effects of splenic artery ligation in this model. Background: Selective arterial embolisation and splenic artery ligation (SAI,) are used in the treatment of secondary hypersplenism in some medical centres but these methods are not common. Materials and Methods: Thirty male Saprague-Dawley rats were allocated to three groups (n=10). The first group underwent laparotomy, the second and third groups underwent laparotomy and splenic vein ligation. At the end of the third week, laparotomy was performed in the first and second groups and splenic artery ligation in the third group. Erythrocyte, leukocyte and platelet counts were performed weekly. At the end of the sixth week, the animals were sacrificed and the spleens were taken for histopathologic examination. Results: In the second and third groups, after splenic vein ligation, the erythrocyte and platelet counts mere significantly reduced at the end of the second week (p<0.01), In the second group, which underwent splenic vein ligation only, the levels remained low throughout the experiment. In the third group, after splenic artery ligation, there were rises in both erythrocyte and platelet counts; the levels were similar to the levels in the control group at three weeks after splenic artery ligation (p>0.05), No significant changes were observed in the leukocyte counts throughout the experiment (p>0.05), Conclusions: Splenic vein ligation successfully induces experimental secondary hypersplenism, This state can be ameliorated by splenic artery ligation.Öğe Percutaneous Drainage for Liver Hydatid Cysts - Rely(CANADIAN MEDICAL ASSOCIATION, 2002) Şahin, M.; Aksoy, Fatih[Abstract not Available]Öğe PROCESS OPTIMIZATION FOR BIODIESEL PRODUCTION FROM NEUTRALIZED WASTE COOKING OIL AND THE EFFECT OF THIS BIODIESEL ON ENGINE PERFORMANCE(ECOPETROL SA, 2018) Eryilmaz, Tanzer; Aksoy, Fatih; Aksoy, Lacine; Bayrakceken, Huseyin; Aysal, Faruk-Emre; Sahin, Seda; Yesilyurt, Murat-KadirIn this study, the methyl ester production process from neutralized waste cooking oils is optimized by using alkali-catalyzed (KOH) single-phase reaction. The optimization process is performed depending on the parameters, such as catalyst concentration, methanol/oil ratio, reaction temperature and reaction time. The optimum methyl ester conversion efficiency was 90.1% at the optimum conditions of 0.7 wt% of potassium hydroxide, 25 wt% methanol/oil ratio, 90 min reaction time and 60 degrees C reaction temperature. After the fuel characteristics of the methyl ester obtained under optimum conditions were determined, the effect on engine performance, CO and NO,, emissions of methyl ester was investigated in a diesel engine with a single cylinder and direct injection. When compared to diesel fuel, engine power and torque decreased when using methyl ester, and specific fuel consumption increased. NOx emission increases at a rate of 18.4% on average through use of methyl ester.Öğe A rare cause of ileus : Invagination due to ectopic pancreas(ACTA MEDICAL BELGICA, 2008) Tekin, Ahmet; Aksoy, Fatih; Vatansev, Celalettin; Küçükkartallar, Tevfik; Belviranlı, Metin; Toy, HaticeIntroduction : Invagination is seen rarely as a cause of ileus in adults. The cause of invagination in children differs from that in adults. In adults it is mostly due to organic lesions (tumour). Case report: In a 49 years old patient, with 3 months of intermittant abdominal pain, radiologic investigations suspected a of small bowel tumour. The patient was operated on. At exploration, there was an ileo-ileal invagination on the terminal ileum over 40 cm distance A totally necrosed ileum segment was resected and an end-to-end anastomosis Was performed. Inside the excised ileal loop their was a polyp-like lesion originating from submucosa, bordered by the wall but not protruding to the lumen. The pathological examination of the lesion revealed ectopic pancreatic tissue between the muscular layers of the bowel wall. Result : Intestinal invagination must be got in mind as a rare cause of ileus in adults. During it's clinical course their is enough time to reach the diagnosis. So unnecessory resections and postoperative complications can be prevented.Öğe Rare cause of ileus in the mesenteric cavity of terminal ileum: A report of three cases(W J G PRESS, 2006) Tekin, Ahmet; Aksoy, Fatih; Vatansev, Celalettin; Küçükkartallar, T.Internal herniation is one of the rare reasons of intestine clog, which is hard to diagnose and usually needs an urgent surgical treatment. We report 3 patients with internal herniation in the mesenteric cavity of the terminal ileum. Besides intestinal congestion, they also had peritoneal irritation. Laparotomy revealed that herniation caused disorder in nutrition of the intestine and necrosis. The patients underwent subtotal small intestine resection and were discharged 10, 12 and 14 d after operation. (c) 2006 The WJG Press. All rights reserved.
