Modeling results of calcium-containing minerals precipitation in the alkaline hydrotherms of Baikal Rift Zone: calcite and dolomite

The calculation modeling results of the nitric hydrotherms saturation in Baikal Rift Zone with calcite and dolomite are presented. The calcite and dolomite make the carbonate barrier to thermal waters equilibrium with primary minerals of igneous rocks. In the research territory, there are three main types of geochemical thermal waters which are characterized by the saturation degree with the calcite and dolomite and the proportion of precipitating minerals phases. It has been established that nitric thermal waters-rock system has equilibrium with these minerals, which leads to bonding migrated from the rocks calcium and magnesium by the secondary formed minerals - calcite and dolomite

Geochemical peculiarities of nitric thermal waters in Jiangxi Province (SE-China)

The chemical composition of nitric thermal waters in Jiangxi Province, SE-China, is considered. It is shown that the studied thermal waters are characterized by low TDS (293-412 mg/l), but they always have alkaline or highly alkaline pH values. It should be noted that the content of Na{+}, Si, F{-}, HCO[3]{-}, CO[3]{2-}, sometimes SO[4]{2-} is predominant, on the other hand, the content of Ca{2+}, Mg{2+}, Cl{-} is low. It has been established that the main factors responsible for low concentrations of some chemical elements and high concentrations of others are continuous dissolution of aluminosilicate minerals and simultaneous precipitation of the secondary minerals

The Method of “Cold” Snaring Mucosa Resection with Preliminary Hydro-Preparation for the Removal of Colorectal Epithelial Neoplasms through an Endoscope

Aim: to analyze the safety and effectiveness of the method of cold snaring resection with preliminary hydropreparation when removing superficially colorectal epithelial neoplasms with a diameter of 5 to 25 mm.Material and methods. The number of complications and disease recurrence after endoscopic excisions by “cold” snaring resection with preliminary hydropreparation of superficially neoplasms with a diameter of 5 to 25 mm was assessed.Results. Neoplasms were removed in a single block in 89/122 (72.95 %) cases. Neoplasms with a diameter of 5 to 9 mm were excisions in a single block in 100 % of cases, with a diameter of 9 to 14 mm in 28/30 (93.33 %) cases, with a diameter of 15 to 19 mm in 12/38 (31.57 %) cases. According to the results of a lifetime pathoanatomic examination of the removed material, serrated dysplasia (serrated dysplasia, low grade) was detected in 76 cases; micro vesicular hyperplastic polyps (Hyperplastic polyp, micro vesicular type MVHP) were established in 9 cases; hyperplastic polyps containing goblet cells (Hyperplastic polyp, goblet cell GCHP) were in 5 cases; tubular adenoma with dysplasia (Tubular adenoma, low grade) was in 32 cases. Delayed bleeding and perforation of the intestinal wall, both at the time of resection, and in the delayed period was not observed. No local recurrence was detected in the groups of patients with neoplasms diameters of 5-9 and 10-14 mm. One case of local recurrence was detected in a group of patients with a neoplasms diameter from 15 to 19 mm (1/38 = 2.63 %) and one case in a group with a neoplasms diameter of 20-25 mm (1/5 = 20 %).Conclusions. Cold endoscopic snaring resection of colorectal epithelial neoplasms with preliminary hydropreparation in the submucosa is a safe and effective method of excisions superficially epithelial neoplasms of the colon with a diameter of 5 to 19 mm

CLINICAL CASE SURGICALTREATMENT OF IATROGENIC BILE DUCT INJURY USING PERCUTANEOUS MINIMALLY INVASIVE TECHNOLOGIES

The article presents a clinical case with iatrogenic injury to the common bile duct after laparoscopic cholecystectomy and surgical treatment with the use of minimally invasive percutaneous techniques. The patient was admitted to the regional clinical hospital №2 of Krasnodar with iatrogenic injury to the common bile duct at ( 11 Bismush or (+1) Halperin), on the 3rd day after operation. Patient's health was hard, marked clinical manifestations a mechanical icterus syndrome and sys-temic inflammatory response syndrome. The patient performed ultrasound diagnosis of ab-dominal organs, laboratory blood tests. Patients showed signs of bile hypertension. We did per-cutaneous drainage of the bile ducts under the control of radiological methods as preoperative period. After 2 months, the patient made a planned reconstructive surgery - biliodigestive anas-tomosis Roux. There were not complications in the postoperative period. Literature review and difficulties of timely diagnosis, examination and minimally invasive treatment of these patients are showed

ULTRASOUND ELASTOMETRY OF THE PANCREAS IN A DIFFERENTIATED APPROACH TO THE FORMATION OF PANCREATOENTEROANASTOMOSIS IN PANCREATODUODENAL RESECTION

Aim. This study was conducted to assess the possibility of ultrasound elastometry using the shear wave method in the preoperative assessment of the stiffness condition of the  pancreatic parenchyma in order to predict the risk of complications and the choice of the method for the formation of pancreatoenteroanastomosis in pancreatoduodenal resection.Materials and methods. The study was performed in 10 patients operated in the volume of pancreatoduodenal resection. All patients  underwent preoperative ultrasound pancreatic elastometry with  transcutaneous shear wave access method. The results were  compared with the intraoperative data obtained by the visual  examination and palpation. Depending on the average "stiffness"  indicators of the parenchyma in comparison with the intraoperative  data, one of two ways of forming the pancreatic intestinal  anastomosis was preferred: either end-to-side or  pancreatoenteroanastomosis with a wide atraumatic peritonization of the pancreas stump cutoff by the jejunum according to the original technique.Results. The inconsistency of class A pancreatoenteroanastomosis was noted in 2 (20%) patients, it was transient, asymptomatic, did  not require additional medical interventions and did not extend the  duration of the postoperative period. There were no inconsistencies  of classes B and C, pancreonecrosis of the stump, repeated surgical  interventions, and lethal outcomes.Conclusion. Ultrasound pancreatic elastometry with the shear wave method can be used in the preoperative assessment of the  "stiffness" of the parenchyma in order to predict the risk of the  complications and the choice of the method for the pancreatoenteroanastomosis formation