Acute Necrotizing Pancreatitis (ANP)

Necrosis of the pancreas and the peripancreatic tissue is present in 10-20% of patients with acute pancreatitis (AP) and is the reason for the high levels of morbidity and mortality rate in these cases. In the initial phase of acute necrotizing pancreatitis (ANP), the most important moments in the treatment are permanent correction of fluid and electrolyte imbalance, early enteral nutrition, ERCP in patients with cholangitis and increased pressure in the biliary tract, and patient admission in intensive care unit. When pancreatic and peripancreatic necroses become infected, surgical treatment is an optimal option, which, if possible, should be delayed till the fourth week after the onset of the disease. The type of surgery also experienced changes - from a classic open approach, with the introduction of wide drainage for postoperative lavage, through half-open techniques with subsequent repeated laparotomy, to a percutaneous drainage with a subsequent access to the retroperitoneum to perform minimally invasive necrectomy

Surface properties of the Ni-silica gel catalyst precursors for the vegetable oil hydrogenation process: N-2 sorption and XPS studies

The effect of the type of the silica gel pore structure on the surface properties of the Ni-silica gel catalyst precursors for the vegetable oil hydrogenation process has been examined applying N-2 sorption and X-ray photoelectron spectroscopy techniques. The nickel catalyst precursors with identical composition (SiO2/Ni = 1.0) has been synthesized by precipitation of Ni(NO3)(2) center dot 6H(2)O solution with Na2CO3 solution on the three types of silica gel with different pore structures. It is shown that the usage of the silica gel supports with different texture as source of SiO2 causes different location of Ni-species into the support pores and on the external surface area. The XPS data confirm the formation of surface species with different strength of interaction and different dispersion. These surface characteristics of the precursors will predetermine the formation of the active nickel metallic phase as well as the mass transfer of the reactants and products to and from the catalytic sites