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Öğe Acute volvulus of the right colon: a case report(Elsevier Science Bv, 2009) Hasdemir, Ahmet Oguz; Kordon, Ozgur; Cakmaz, Ridvan; Turkeli, Vildan; Col, CavitAcute volvulus of the right colon is an uncommon cause of intestinal obstruction and is rarely diagnosed correctly at the time of presentation. The aim of the study is to discuss the clinical features and management volvulus of right colon. We report a case in an 81-year-old man was referred from a primary care centre with a four-day history of abdominal pain, distension and vomiting. He had undergone left inguinal hernioraphy for incarseration before 5 days. An emergency laparotomy was performed. The caecum was grossly distended with several areas of gangrene, and lay in the left side of the abdomen in operation. Right colon had rotated in a counter-clockwise rotation. An extended right hemicolectomy was subsequently performed. The operative management of volvulus of the right colon remains controversial. A review of the literature, it appears that right hemicolectomy is the treatment of choice for volvulus of the right colon, as it avoids all risk of recurrence and mortality is lower than that obtained with conservative treatment.Öğe An adult patient with patent omphalomesenteric duct: Case report(Yerkure Tanitim & Yayincilik Hizmetleri A S, 2008) Hasdemir, Ahmet Oguz; Buyukasik, Oktay; Dinler, Kahraman; Yalcin, Ercan; Col, CavitAn adult patient with patent omphalomesenteric duct who presented with fecal umbilical discharge was excised with median incision. The omphalomesenteric duct was followed up to the junction with the small intestine and resection of this segment with the duct was performed. There were no postoperative complications. In the presence of feculent, bilious, seropurulent, or serous discharge at the umbilicus, omphalomesenteric duct or an intestinal umbilical fistula must be remembered in the differential diagnosis.Öğe CARCINOMA OF THE GASTRIC STUMP FOLLOWING BILLROTH II OPERATION(Oxford Univ Press, 2011) Col, Cavit; Hasdemir, Oguz; Buyukasik, OktayÖğe A Case of Morgagni Hernia Resulting with Respiratory Arrest(Derman Medical Publ, 2011) Kilicgun, Ali; Hasdemir, Ahmet Oguz; Bozgcyik, Murat; Cakmaz, Ridvan; Col, CavitMorgagni's hernia is seen at a rate of 3-4% among all diaphragmatic hernias. It develops from a defect in the pleuroperitoneal membrane. Herniation of the omentum is seen most commonly, that of the colon frequently, and herniation of small bowel and stomach is seen rarely. When being examined due to anemia and dyspnea, a 53-year-old male patient suffered from a respiratory arrest and was hence intubated and placed under treatment at the intensive care unit. On radiological examination, a giant diaphragmatic hernia was observed bilaterally, more marked on the right side. On laparotomy, especially on the right side, the caecum, the ascending colon, the transverse colon, the appendix, the omentum and part of the small bowel was seen to be herniated. Primary diaphragmatic repair + right hemicolectomy + end-to-end ileo-transversostomy was performed. We have reported this case because it was a giant hernia which caused respiratory arrest.Öğe The comparison of adhesion formation effects of HI-TEX®PARP NT and Proceed Mesh(Aves, 2008) Yalcin, Ercan; Hasdemir, Oguz; Buyukasik, Oktay; Dinler, Kahraman; Col, CavitPurpose: Aim of this experimental study is to compare the adhesion formation effects of two different prosthetic materials (HI-TEX (R) Parp NT mesh and Proceed mesh) in hernia repair. Material and Methods: Twenty Wistar-Albino rats were used for the study. Defects of 2x1 cm size were created at the right and left of each rat's anterior abdominal wall. Proceed mesh is implanted on the right side and HI-TEX mesh on the left side at half of them (Group A), and Proceed mesh is implanted on the left side and HI-TEX mesh on the right side at the other half (Group B) to repair the defect. Two rats of each group is sacrificed at the 7th, 14th, 21st, 28th and 35th days postoperatively and extension and severity of the adhesion and tissue reaction to the implants are evaluated. Results: At the end of the study, no difference was found between two groups concerning extension and severity of the adhesion. Adhesion were more frequent in the rats sacrificed on the 7th and 14th days. Proceed mesh adhesion extension (U=376, p < 0.05) and severity (U=352, p < 0.05)) were significantly less than HI-TEX mesh. Tissue reactions to implants were more with HI-TEX mesh, however, no difference was found statistically significant (x2=0.41, p > 0.05). Conclusion: We have the opinion that Proceed mesh is superior to HI-TEX mesh in hernia repair as it has less adhesion formation effect. As a result, Proceed mesh is thought to be a more suitable hernia repairment material compared to HI-TEX mesh.Öğe The Effect of an Intraperitoneal Injection of Melatonin on Serum Amylase Levels in Acute Pancreatitis(E S Burioni Ricerche Bibliografiche, 2009) Col, Cavit; Dinler, Kahraman; Hasdemir, Ahmet Oguz; Bugdayci, GulerContext Several experimental studies have been carried out to explain the physiopathological mechanisms and to introduce endocrinological, enzymatic, biochemical and histopathological changes in organisms during acute pancreatitis. Objective To evaluate the effect of an intraperitoneal injection of melatonin on serum amylase levels. Design Experimental acute pancreatitis was experimentally caused through pancreatic duct ligation in 20 Winstar Albino rats. The rats were then divided into two groups: control and melatonin groups. Intervention The serum amylase level was measured on the 7th day after acute pancreatitis had developed. In the melatonin group, an intraperitoneal injection of melatonin (20 mg/kg/day) was performed starting from the 2nd day after pancreatic duct ligation. Main outcome measure The levels of serum amylase were measured with an auto analyzer. Results It was found that the mean (+/- SD) level of serum amylase in the control group was 947 +/- 182 IU/mL while it was 358 +/- 177 IU/mL in the experimental group (P< 0.001). Conclusions The 20 mg/kg/day intraperitoneal injection of melatonin which was carried out for one week attenuated the serum amylase levels to a statistically significant degree. The researchers believe that intraperitoneal injections of melatonin decrease the severity of acute pancreatitis.Öğe THE EFFECTS OF INTRAPERITONEAL MELATONIN INJECTION AND PINEALECTOMY IN EXPERIMENTAL ACUTE PANCREATITIS(Istanbul Univ, Faculty Medicine, Publishing Office, 2009) Dinler, Kahraman; Hasdemir, Ahmet Oguz; Col, Cavit; Gunduz, Blent; Bugdayci, Gler; Kukner, AyselObjectives: In this study the aim was to evaluate the effects of on biochemical markers and histopathological findings of pancreas tissue of decreeasing and increasing serum melatonin levels in rats with had experimental acute pancreatitis. Materials and methods: This study was conducted three groups of Winstar Albino rats (ten animals in every group) that have experimental acute pancreatitis. First group was evaluated as control group. Surgical pinealectomy was applied in the second group and the source of endogen melatonin was (low melatonin levels group). Third group of rats injected with 0.1 ml daily intraperitoneal injection of 20 mg/ml melatonin solution for one week was high melatonin levels group. The effects of melatonin levels on acute pancreatitis were evaluated by comparing these group according to histopathologial results of polimorphonuclear leukocytes. infiltration, oedema, haemorrhagie, apoptosis, aciner cellular degeneration in pancreatic tissue and the levels of malonyledialdeyde (MDA), glutathione reductase (GSH), superoxyde dismutase (SOD), aspartate transaminase (AST), alanine transpherase (ALT), amylase, lactate dehydrogenase (LDH) and bilirubine. Results: We investigated that high melatonin levels has an decreasing effect on of polimorphonuclear leukocyte infiltration, oedema, haemorrhage, aciner cellular degeneration, apoptosis in pancreatic tissue, AST, LDH, bilirubine and MDA levels. Conclusion: As a conclusion exogenous melatonin may have a preventive effect on inflammatory process by reducing oxidative damage in pancreatic tissue.Öğe Gastric Volvulus Associated with Wandering Spleen in Adult: Case Report(Derman Medical Publ, 2012) Buyukasik, Oktay; Hasdemir, Ahmet Oguz; Kahramansoy, Nurettin; Col, Cavit; Erkol, HayriGastric volvulus associated with wandering spleen is a rare diagnosis in adult ages. So far, only two cases have been reported in the literature. 82 year old male patients admitted to emergency department with complaint of nausea, vomiting and constipation. Physical examination and computerize tomography detected a big solid mass with regular contour which is full filling abdominal left lower quadrant. Exploratory laparotomy revealed a wandering spleen in sizes of 13x13x15 cm in the mentioned region. The spleen which had two masses on was partially ischemic. The stomach had rotated through cardiopyloric axis due to long pedicle of the spleen and adhesions neighborhood to corpoantral junction. Thus gastric passage was partialy obstructed. Splenectomy and anterior gastropexy were applied. The patient was discharged in health at 6th day postoperatively.Öğe Metastatic Mature Teratoma Presented with Massive Intraabdominal Bleeding: A Case Report(Galenos Yayincilik, 2011) Buyukasik, Oktay; Hasdemir, A. Oguz; Kahramansoy, Nurettin; Kilicgun, H. Ali; Korkmaz, Tanzer; Col, Cavit; Erkol, HayriTeratomas are rarely encountered. A 17-year-old male patient presented to the emergency clinic with findings of acute abdomen and hipovolemic shock. Massive hemorrhagic blood collection, multiple metastatic lesions in the liver and a bleeding retroperitoneal mass with dimensions of 5x5x3 cm were detected in abdomen at laparotomy. The bleeding mass was excised totally. The pathologic diagnosis was metastatic teratoma. Scrotal ultrasonography revealed a mass with dimensions of 2x1 cm in the right testis. While the investigations proceeded, he died of a new massive bleeding on the postoperative 24th day.
