[Oral cholangioscopy for biliary system diseases].

Objective: To improve the results of treatment of obstructive jaundice by using of oral cholangioscopy.

Material And Methods: There were 321 patients with obstructive jaundice between October 2020 and November 2021. Of these, cholangioscopy (SpyGlass video system) was used in 18 patients.

Intraluminal endoscopy in diagnosis and treatment of fluid collections in acute pancreatitis.

Objective: To improve treatment outcomes in patients with acute pancreatitis through a differentiated approach to transluminal drainage.

Material And Methods: There were 1074 patients with acute pancreatitis between January 2018 and December 2021 at the Sklifosovsky Research Institute for Emergency Care. EUS was used as a final diagnostic method to determine localization, dimensions, shape and contours of fluid collections.

Endoscopic transluminal drainage for infected pancreatic necrosis.

Objective: To evaluate the effectiveness of intraluminal drainage of acute fluid accumulations for infected pancreatic necrosis.

Material And Methods: There were 848 patients with acute pancreatitis between January 2018 and December 2020 at the Sklifosovsky Research Institute for Emergency Care. Necrotizing pancreatitis was detected in 232 (27.

Anomalous size dependence of the thermal conductivity of graphene ribbons.

We investigated the thermal conductivity K of graphene ribbons and graphite slabs as the function of their lateral dimensions. Our theoretical model considered the anharmonic three-phonon processes to the second-order and included the angle-dependent phonon scattering from the ribbon edges. It was found that the long mean free path of the long-wavelength acoustic phonons in graphene can lead to an unusual nonmonotonic dependence of the thermal conductivity on the length L of a ribbon.