Introduction. Liver transplantation is currently considered to be the only method of radical treatment for adults and children with incurable liver diseases. The most important aspects of liver transplantation are the correct selection of an appropriate recipient and compilation and maintenance of a liver transplant waiting list. This article aims to analyze the structure of the severe chronic liver disease patient population included in the liver transplant waiting list at the G. G. Kuvatov Republican Clinical Hospital (the City of Ufa).Materials and methods. We analyzed the waiting list drawn and maintained over the 2007-2018 period based on the examination of 789 patients with liver cirrhosis of various etiologies.Results and discussion. Out of all the patients with liver cirrhosis of different etiologies (Child-Pugh score classes A, B, and C) 149 (18.8 %) were included in the waiting list. The ages of patients included in the liver transplant waiting list ranged from 19 to 69. The mortality rate amounted to 38.9 % (58 people); of these patients 31 (53.4 %) had hepatic cirrhosis (HC) of autoimmune etiology, 18 (31.0 %) — HC of viral etiology, and 6 (10.3 %) — alveococcosis of the liver. The rate of the waiting list expansion for patients aged 20-29 compared to those aged 0-19 amounted to 1.32 %. Such a dynamics for the 30-39 age group compared to the 20-29 age group was 11.51 %. The number of people aged 40-49 compared to the preceding age group remained the same.Conclusion. Our analysis of the waiting list sets the percentage of patients with autoimmune HC in the population of patients with this disease at 59 %. These patients are characterized by a rapid progression of liver failure and high mortality. The statistical analysis of liver transplant waiting lists facilitate the optimization of procedures used to select and manage such patients, as well as to prevent, in a timely manner, the development of complications thus improving the prognosis of survival.

Introduction. Refeeding syndrome is a condition underpinned by metabolic disorders emerging as a result of the resumption of feeding in patients after a protracted period of starvation. The real figures of the potentially life threatening refeeding syndrome incidence are unknown. This paper aims to demonstrate the clinical picture and methods of resolving of the refeeding syndrome by presenting a clinical case.Materials and methods. The clinical presentation of the refeeding syndrome with pronounced neurological and cardiological symptoms is demonstrated on the example of a female patient with acute pancreatitis of medium severity at the resumption of enteral feeding. A review of available literature on the subject is also presented.Results and discussion. The range of diagnostic considerations was rather broad as the authors had to eliminate acute coronary and neurological disorders. The auxiliary laboratory examination methods helped form the hypothesis of a developing refeeding syndrome and correct the treatment. Parenteral phosphate-containing preparations and enteral feeding with phosphates were administered. The patient was transferred to the neurology department for further treatment. The patient was discharged home on day 53 with total regression of neurological symptoms.Conclusion. Hypophosphataemia — a very low level of phosphorus in blood — is a key clinical marker of the syndrome. However, low blood levels of potassium, calcium, magnesium and vitamin В1 may also play a role. Chronically undernourished patients and those not having any enteral feed for over 10 days are fall in the high risk group. The feeding should be resumed at a low level energy intake. Vitamins should be prescribed at the resumption and continued for at least 10 days. The electrolyte and fluid balance does not have to be corrected prior to the resumption of feeding; it can be done simultaneously with feeding.

The kinetics of the reduction of orthorhombic and tetragonal lead oxides to lead with hydrogen has been investigated in the temperature range from 450 to 525°C. The degree of reduction of lead in the orthorhombic oxide as a function of the reaction time is described by the Erofeev equation in which the exponent n is unity. No significant difference in reactivity toward hydrogen between orthorhombic and tetragonal lead oxides has been revealed. The activation energy of the lead oxide reduction reaction is 85.8 ± 8.3 kJ/mol for the orthorhombic phase and 93.1 ± 5.0 kJ/mol for the tetragonal phase, so these values are equal within the activation energy determination error.