[Endoscopic ultrasonography in diagnosis of chemical esophageal burn and prediction of cicatricial stenosis].

Objective: To analyze the role of endoscopic ultrasonography (EUS) in predicting the risk of cicatricial stenosis after chemical esophageal burn.

Material And Methods: A retrospective study included 56 patients with chemical esophageal burn grade III/IV. Primary endoscopy was performed upon admission.

[Endoscopic vacuum therapy in minimally invasive treatment of esophageal perforations].

Objective: To compare the results of endoscopic vacuum therapy (EVT) and open surgery for esophageal perforations.

Material And Methods: The study included 60 patients with esophageal perforations between 2010 and 2022. The main group included 29 patients who underwent minimally invasive treatment with EVT, the control group - 31 patients after open surgical interventions.

[The role of endosonography in the treatment of chemical ulcerative-necrotic burns of the esophagus].

The authors present ultrasonography-assisted endoscopic diagnosis of chemical burn of the esophagus. This method early predicted decompensated cicatricial stenosis of the esophagus that was valuable to determine treatment strategy. Preventive mini-invasive endoscopic percutaneous gastrostomy provided adequate enteral nutrition in a patient with decompensated esophageal stenosis before reconstructive surgery.

True Molecular Composites: Unusual Structure and Properties of PDMS-MQ Resin Blends.

Poly(dimethyl siloxane)-MQ rubber molecular composites are easy to prepare, as it does not require a heterophase mixing of ingredients. They are characterized by perfect homogeneity, so they are very promising as rubber materials with controllable functional characteristics. The manuscript reveals that MQ resin particles can significantly, more than by two orders of magnitude, enhance the mechanical properties of poly(dimethyl siloxane), and, as fillers, they are not inferior to aerosils.

Hybrid Polycarbosilane-Siloxane Dendrimers: Synthesis and Properties.

A series of carbosilane dendrimers of the 4th, 6th, and 7th generations with a terminal trimethylsilylsiloxane layer was synthesized. Theoretical models of these dendrimers were developed, and equilibrium dendrimer conformations obtained via molecular dynamics simulations were in a good agreement with experimental small-angle X-ray scattering (SAXS) data demonstrating molecule monodispersity and an almost spherical shape. It was confirmed that the glass transition temperature is independent of the dendrimer generation, but is greatly affected by the chemical nature of the dendrimer terminal groups.