Preoperative Endoscopy and Its Impact on Perioperative Management in Bariatric Surgery

BACKGROUND The role of preoperative upper-gastrointestinal endoscopy for bariatric surgery is still understood only with controversy. The aim of this study was to evaluate the prevalence of endoscopic findings and its impact on perioperative management. METHODS Patients who underwent bariatric surgery at our center between 2010 and 2013 were systematically analyzed from a prospective database. RESULTS Two hundred and twelve patients with a median body mass index of 50 kg/m(2) (range 29-87) underwent 216 bariatric procedures at our center between 2010 and 2013. All patients received preoperative upper endoscopy. In 159 cases (75%), the endoscopy was performed at our center. These cases were included in this study. In 37 cases (23%), no abnormal findings were detected. In 122 cases (76%), upper endoscopy revealed pathologies. No further treatment was necessary in 24 cases (15%). Medical treatment was changed in 81 cases (51%). The operation was delayed due to medical treatment and re-endoscopy in 13 cases (8%). The surgical approach was changed in 4 cases (3%). CONCLUSION Routinely performed preoperative endoscopy before bariatric surgery revealed a high prevalence of gastrointestinal diseases with a significant impact on perioperative management in two thirds of the cases. Therefore, we recommend routine gastroscopy about 2-4 weeks prior to surgery

Реализация инвестиционных проектов и проектов технического перевооружения реконструкции на примере АО «Транснефть-центральная Сибирь»

Объектом исследования является нефтяное предприятие АО "Транснефть - Центральная Сибирь", являющееся дочерним предприятием ПАО "Транснефть". Цель работы - изучить особенности реализации инвестиционных проектов, технического перевооружения и реконструкции на примере АО "Транснефть - Центральная Сибирь". В процессе исследования проводились Анализ инвестиционной деятельности АО "Транснефть - Центральная Сибирь", Оценка эффективности вложения инвестиций АО "Транснефть - Центральная Сибирь". В результате исследования определен экономический эффект применения противотурбулентной присадки при перекачке нефти, а так же экономический эффект от технического перевооружения и реконструкции части магистрального нефтепровода.The object of the study is the oil enterprise of Transneft-Central Siberia JSC, which is a subsidiary of PJSC Transneft. The purpose of the work is to study the specifics of implementing investment projects, technical re-equipment and reconstruction using the example of Transneft-Central Siberia JSC. In the process of the study, the analysis of the investment activity of Transneft-Central Siberia JSC was conducted, and the evaluation of the investment efficiency of Transneft-Central Siberia. As a result of the study, the economic effect of using an anti-turbulent additive in pumping oil was determined, as well as the economic effect of technical re-equipment and reconstruction of part of the main oil pipeline

Ресурсосберегающий метод синтеза нитрида ниобия

Разработка новых методов синтеза нитридов в настоящее время актуальна, поскольку эти нитриды, нитриды и другие металлы широко используются в промышленности.Development of new methods for synthesis of nitrides is currently relevant because these nitrides, and nitrides of other metals are commonly used in industry

Stability of Drugs Stored in Helicopters for Use by Emergency Medical Services: A Prospective Observational Study.

STUDY OBJECTIVE Drugs stored in rescue helicopters may be subject to extreme environmental conditions. The aim of this study was to measure whether drugs stored under the real-life conditions of a Swiss helicopter emergency medical service (HEMS) would retain their potency over the course of 1 year. METHODS A prospective, longitudinal study measuring the temperature exposure and concentration of drugs stored on 2 rescue helicopters in Switzerland over 1 year. The study drugs included epinephrine, norepinephrine, amiodarone, midazolam, fentanyl, naloxone, rocuronium, etomidate, and ketamine. Temperatures were measured inside the medication storage bags and the crew cabins at 10-minute intervals. Drug stability was measured on a monthly basis over the course of 12 months using high-performance liquid chromatography. The medications were considered stable at a minimum remaining drug concentration of 90% of the label claim. RESULTS Temperatures ranged from -1.2 °C to 38.1 °C (29.84 °F to 100.58 °F) inside the drug storage bags. Of all the temperature measurements inside the drug storage bags, 37% lay outside the recommended storage conditions. All drugs maintained a concentration above 90% of the label claim. The observation periods for rocuronium and etomidate were shortened to 7 months because of a supply shortage of reference samples. CONCLUSION Drugs stored under the real-life conditions of Swiss HEMS are subjected to temperatures outside the manufacturer's approved storage requirements. Despite this, all drugs stored under these conditions remained stable throughout our study. Real-life stability testing could be a way to extend drug exchange intervals

Ordered arrays of nanoporous silicon nanopillars and silicon nanopillars with nanoporous shells

The fabrication of ordered arrays of nanoporous Si nanopillars with and without nanoporous base and ordered arrays of Si nanopillars with nanoporous shells are presented. The fabrication route is using a combination of substrate conformal imprint lithography and metal-assisted chemical etching. The metal-assisted chemical etching is performed in solutions with different [HF]/[H2O2 + HF] ratios. Both pore formation and polishing (marked by the vertical etching of the nanopillars) are observed in highly doped and lightly doped Si during metal-assisted chemical etching. Pore formation is more active in the highly doped Si, while the transition from polishing to pore formation is more obvious in the lightly doped Si. The etching rate is clearly higher in the highly doped Si. Oxidation occurs on the sidewalls of the pillars by etching in solutions with small [HF]/[H2O2 + HF] ratios, leading to thinning, bending, and bonding of pillars