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Search Results: 1 - 10 of 1413 matches for " Georgios Oikonomou "
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Trends in Central Bank Transparency  [PDF]
Georgios Oikonomou, Eleftherios Spyromitros
Theoretical Economics Letters (TEL) , 2017, DOI: 10.4236/tel.2017.77142
Abstract: In this paper we have updated Central Bank Transparency Index from 2011 to 2016, following the methodology of Eijffinger and Geraats (2006) [1]. Then, we break down the index’s aspects and we analyze which are more likely to be changed through time. This, in respect to the annual data we have collected, makes clearer how the recent financial crisis has affected the Central Banks’ transparency trend and offers interesting insights for monetary policy transmission. Also, we divided the countries into developed, emerging and frontiers, as there is difference in their indexes changes, probably related to their economic and financial development.
Combined Use of Percutaneous Canulated Screws and External or Internal Fixation for Less Invasive Treatment of Tibial Plateaux Fractures  [PDF]
Konstantinos C. Xarchas, Georgios Kyriakopoulos, Dimitrios Mavrolias, Leon Oikonomou, Ioannis Petropoulos
Open Journal of Orthopedics (OJO) , 2015, DOI: 10.4236/ojo.2015.54011
Abstract: The classic way of treatment of tibial plateau fractures with an extensive approach, opening of the knee and compressive internal fixation can lead to major complications such as infection, skin necrosis and knee stiffness. Here we present a less invasive and thus safer surgical technique, and its indications and results. Twenty patients with various types of fractures according to Schatzker’s classification (mainly V and VI) were treated during a time period of seven years. Surgical treatment usually consisted of a combination of percutaneous canulated screws with a hybrid external fixator. In three cases canulated screws were combined with a laterally applied anatomic locking plate. Patients were followed up for six months to three years postoperatively. Indications as well as intra and postoperative parameters such as surgical time, stability of fixation, blood loss, wound healing, infection, fracture healing and final result were studied. No major complications were recorded either early or later. The use of external οr less invasive internal fixation in combination with percutaneous canulated screws appears to be an adequate method for the treatment of most types of these fractures.
A Connectivity-Based Legalization Scheme for Standard Cell Placement  [PDF]
Antonios N. Dadaliaris, Panagiotis Oikonomou, Maria G. Koziri, Evangelia Nerantzaki, Thanasis Loukopoulos, Georgios I. Stamoulis
Circuits and Systems (CS) , 2017, DOI: 10.4236/cs.2017.88013
Abstract: Standard cell placement algorithms have been at the forefront of academic research concerning the physical design stages of VLSI design flows. The penultimate step of a standard cell placement procedure is legalization. In this step the manufacturability of the design is directly settled, and the quality of the solution, in terms of wirelength, congestion, timing and power consumption is indirectly defined. Since the heavy lifting regarding processing is performed by global placers, fast legalization solutions are protruded in state-of-the-art design flows. In this paper we propose and evaluate a legalization scheme that surpasses in execution speed two of the most widely used legalizers, without not only corrupting the quality of the final solution in terms of interconnection wirelength but improving it in the process.
Esophageal Crohn's Disease Treated “Topically” with Swallowed Aerosolized Budesonide
Petros Zezos,Georgios Kouklakis,Anastasia Oikonomou,Michail Pitiakoudis,Constantinos Simopoulos
Case Reports in Medicine , 2010, DOI: 10.1155/2010/418769
Abstract: Proximal Crohn's disease, involving the esophagus, the stomach, the duodenum, and the proximal jejunum, is uncommon. Treatment for proximal Crohn's disease is based on data derived from case series than from controlled trials. We present a case of Crohn's colitis with concomitant proximal esophagogastroduodenal involvement treated with conventional treatment plus swallowed aerosolized budesonide as a novel adjuvant topical treatment for the esophageal disease, and we review the treatment options for proximal Crohn's disease.
Georgios Zacharis,Argyris Tzouvelekis,Marios Froudarakis,Anastasia Oikonomou
Pneumon , 2011,
Ruptured echinococcus cyst
Georgios Zacharis,Andreas Koulelidis,Argyris Tzouvelekis,Anastasia Oikonomou
Pneumon , 2010,
Total Splenectomy due to an Unexpected “Complication” after Successful Extended Laparoscopic Partial Decapsulation of a Giant Epidermoid Splenic Cyst: A Case Report
Michail Pitiakoudis,Petros Zezos,Anastasia Oikonomou,Prodromos Laftsidis,Georgios Kouklakis,Constantinos Simopoulos
Case Reports in Medicine , 2011, DOI: 10.1155/2011/318208
Abstract: Splenic cysts are rare entities and are classified as true cysts or pseudocysts based on the presence of an epithelial lining. Congenital nonparasitic true cysts can be epidermoid, dermoid, or endodermoid, present at a young age, and are commonly located in the upper pole of the spleen. Surgical treatment is recommended for symptomatic, large (more than 5 cm), or complicated cysts. Depending on cyst number, location, relation to hilus, and the major splenic vessels, the surgical options include aspiration, marsupialization, cystectomy, partial cystectomy (decapsulation), and partial or complete splenectomy. Laparoscopic techniques have now become the standard approach for many conditions, including the splenic cysts, with emphasis on the spleen-preserving minimally invasive operations. We present the successful extended partial laparoscopic decapsulation of a giant epidermoid splenic cyst in a young female patient that, although asymptomatic, was unfortunately followed by complete splenectomy five days later due to a misinterpreted abdominal CT suggesting splenic postoperative ischemia.
Endoscopic Treatment of a Gastrocutaneous Fistula Using the Over-The-Scope-Clip System: A Case Report
Georgios Kouklakis,Petros Zezos,Nikolaos Liratzopoulos,Anthia Gatopoulou,Anastasia Oikonomou,Michail Pitiakoudis,Eleni Efremidou,Constantinos Simopoulos
Diagnostic and Therapeutic Endoscopy , 2011, DOI: 10.1155/2011/384143
Abstract: The over-the-scope-clip (OTSC; Ovesco Endoscopy GmbH, Tuebingen, Germany) system is a newly designed method for the mechanical compression of large areas in the gastrointestinal tract. So far, indications for OTSC application are hemostasis of primary or postinterventional bleeding, closure of iatrogenic full-thickness or covered perforations. Recently closure of gastrointestinal tract fistulas using this device has been described. A 44-year-old man developed a gastrocutaneous fistula after surgical treatment for a perforated gastric ulcer. We describe the successful endoscopic closure of the fistula using the OTSC system. The patient's clinical followup was uneventful. Fistula closure was successfully implemented as it was documented by imaging and endoscopic examinations performed on the 2nd day and 6th week after the application of the clip. Endoscopic application of the OTSC device was safe and effective for the treatment of a gastrocutaneous fistula. 1. Introduction The over-the-scope-clip (OTSC) system (Ovesco Endoscopy GmbH, Tuebingen, Germany) is a newly designed method for the mechanical compression of large areas in the gastrointestinal tract. So far, indications for OTSC application are hemostasis primary or postinterventional bleeding and closure of iatrogenic full-thickness or covered perforations during endoscopic mucosal resection or after natural orifice transluminal endoscopic surgery procedures (NOTES) [1]. We report the successful treatment of a gastrocutaneous fistula with closure of the gastric orifice using the OTSC system without postprocedure complications. 2. Case Presentation A 44-year-old man, who had been having a history of recurrent abdominal pain, attended the emergency services with peritonitis. Upright chest X-ray demonstrated free subdiaphragmatic air bilaterally (Figure 1). An emergent laparotomy was performed and a perforated pyloric ulcer was found which was treated with simple surgical sutures and omental patches. Figure 1: Upright posteroanterior chest radiograph: there is free subdiaphragmatic air bilaterally that is more clearly noted on the left side (white arrows). A few days later the patient displayed a septic course with persistent fever and leukocytosis. An abdominal CT scanning revealed an abscess in the left subphrenic space and in the space of Douglas. A new surgical intervention was undertaken and peritoneal drainage was reestablished in the areas with the abscesses. The immediate postoperative period was uneventful with the exception of a persistent draining of gastric contents by the abdominal drains
Microbial Diversity of Bovine Mastitic Milk as Described by Pyrosequencing of Metagenomic 16s rDNA
Georgios Oikonomou, Vinicius Silva Machado, Carlos Santisteban, Ynte Hein Schukken, Rodrigo Carvalho Bicalho
PLOS ONE , 2012, DOI: 10.1371/journal.pone.0047671
Abstract: Dairy cow mastitis is an important disease in the dairy industry. Different microbial species have been identified as causative agents in mastitis, and are traditionally diagnosed by bacterial culture. The objective of this study was to use metagenomic pyrosequencing of bacterial 16S rRNA genes to investigate bacterial DNA diversity in milk samples of mastitic and healthy dairy cows and compare the results with those obtained by classical bacterial culture. One hundred and thirty-six milk samples were collected from cows showing signs of mastitis and used for microbiological culture. Additionally, 20 milk samples were collected from healthy quarters. Bacterial DNA was isolated from the same milk samples and the 16S rRNA genes were individually amplified and pyrosequenced. Discriminant analysis showed that the groups of samples that were most clearly different from the rest and thus easily discriminated were the normal milk samples from healthy cows and those characterised by culture as Trueperella pyogenes and Streptococcus spp. The mastitis pathogens identified by culture were generally among the most frequent organisms detected by pyrosequencing, and in some cases (Escherichia coli, Klebsiella spp. and Streptococcus uberis mastitis) the single most prevalent microorganism. Trueperella pyogenes sequences were the second most prevalent sequences in mastitis cases diagnosed as Trueperella pyogenes by culture, Streptococcus dysgalactiae sequences were the second most prevalent sequences in mastitis cases diagnosed as Streptococcus dysgalactiae by culture, and Staphyloccocus aureus sequences were the third most prevalent in mastitis cases diagnosed as Staphylococcus aureus by culture. In samples that were aerobic culture negative, pyrosequencing identified DNA of bacteria that are known to cause mastitis, DNA of bacteria that are known pathogens but have so far not been associated with mastitis, and DNA of bacteria that are currently not known to be pathogens. A possible role of anaerobic pathogens in bovine mastitis is also suggested.
Spontaneous idiopathic pneumoperitoneum presenting as an acute abdomen: a case report
Michail Pitiakoudis, Petros Zezos, Anastasia Oikonomou, Michail Kirmanidis, Georgios Kouklakis, Constantinos Simopoulos
Journal of Medical Case Reports , 2011, DOI: 10.1186/1752-1947-5-86
Abstract: We present the case of an idiopathic spontaneous pneumoperitoneum. A 69-year-old Greek woman presented with acute abdominal pain, fever and vomiting. Diffuse abdominal tenderness on deep palpation without any other signs of peritonitis was found during physical examination, and laboratory investigations revealed leukocytosis and intraperitoneal air below the diaphragm bilaterally. Her medical history was unremarkable except for previous cholecystectomy and appendectomy. The patient did not take any medication, and she was not a smoker or an alcohol consumer. Emergency laparotomy was performed, but no identifiable cause was found. A remarkable improvement was noticed, and the patient was discharged on the seventh postoperative day, although the cause of pneumoperitoneum remained obscure.A thorough history and physical examination combined with the appropriate laboratory tests and radiologic techniques are useful tools in identifying patients with non-surgical pneumoperitoneum and avoiding unnecessary operations.Pneumoperitoneum is the result of a gastrointestinal (GI) tract perforation in more than 90% of cases [1]. Perforation of the stomach or duodenum caused by peptic ulcer is considered the most common cause of pneumoperitoneum. Pneumoperitoneum can also be the result of a diverticular rupture or of an abdominal trauma [1]. It commonly presents with signs and symptoms of peritonitis, and subphrenic free gas in an upright chest radiograph is the most common radiologic finding. In most cases, pneumoperitoneum requires urgent surgical exploration and intervention [1].However, sometimes pneumoperitoneum not associated with a perforated viscus can occur; this is called spontaneous pneumoperitoneum (SP) or "non-surgical" pneumoperitoneum. SP is associated with intrathoracic, intraabdominal, gynecologic, iatrogenic or other miscellaneous causes [1]. Although it is not usually complicated with peritonitis, SP is characterized by a benign course and can be managed conserv
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