Highlights. Using ECHO and MSCT data, a numerical assessment of hemodynamic effects of paraprosthetic regurgitation following transcatheter aortic valve replacement was performed. A significant increase in the fluid flow, wall and viscous shear stresses in the area of regurgitation is shown. The modeling technique described in the paper can be used prospectively in assessing the optimal treatment modality in terms of predicting the quantitative characteristics of the flow, associated with the risks of destruction of red blood cells and thrombosisAim. To make a numerical assessment of hemodynamic effects of paraprosthetic regurgitation following transcatheter aortic valve replacement based on retrospective clinical data.Methods. The study included echocardiography and multi-slice computed tomography data as input data for modeling one pulsation of a fluid similar in properties to blood. Reconstruction of the paraprosthetic fistula and the ascending aorta was performed in the Mimics medium (Materialise, Belgium). The obtained 3D models were processed in the Salome software (OPEN CASCADE SAS, France), after which they were exported to HELYX-OS (ENGYS, Great Britain) to build a finite element mesh. The flows were modeled using the OpenFOAM software package version 6 (The OpenFOAM Foundation Ltd, UK).Results. The simulation result, expressed quantitatively and qualitatively in the form of diagrams of the measured parameters – fluid flow velocities, wall and viscous shear stresses, shows a significant increase in indicators in the area of paraprosthetic regurgitation. Thus, the velocity in the affected area was 1.9–4.2 m/s, which is 3.8 higher than the average value in the entire computational area. The wall shear stress value was up to 61 Pa in the critical area, which may indicate an increased risk of thrombus formation due to the initiation of the clotting cascade through the von Willebrand factor. The value of viscous shear stress, the main component of the destruction of red blood cells in laminar flow, amounted to 20–26 Pa, which, in general, is not enough for mechanical hemolysis.Conclusion. The modeling technique described in the paper can be used prospectively in assessing the optimal treatment modality in terms of predicting the quantitative characteristics of the flow, associated with the risks of destruction of red blood cells and thrombosis.

Introduction. An effective way to reduce the volume of infusion (restrictive strategy) in hypovolemic shock, in particular in burn shock, is invasive hemodynamic monitoring and choosing the appropriate regimen for the use of inotropic agents, considering the data obtained. However, the use of inotropic agents in hypovolemic shock is still controversial. The most cutting issue is the choice of effective doses of inotropic agents. Aim. Justification of the need to use inotropic agents and assessment of the safety and effectiveness of dobutamine use in burn shock. Materials and methods. The pilot clinical study conducted in 2021–2022 included 9 patients aged 15–70 years who were admitted to the intensive care unit (ICU) of the Burn Center of the Novosibirsk State Regional Clinical Hospital with a total body surface area burned > 40% (II–III degree), in most cases – thermal inhalation injury, who were in the ICU for over 3 days. Intensive care of burn injury in the acute phase was performed according to conventional clinical recommendations. Myocardial samples for morphological and immunohistochemical studies were taken from 34 patients who died from burn shock (27 men and 7 women, aged from 21 to 51 years) from 2015 to 2019. The samples were taken post mortem, and with minimal atherosclerotic changes of the coronary arteries (lesions no more than 20–25%). The control group for morphological and immunohistochemical studies comprised samples which were taken from 25 individuals who died because of sudden circulatory arrest (19 men, 6 women). Results. Studies have shown a decrease in myocardial contractility in patients with burn shock. Morphological examination revealed contraction lesions of individual cardiomyocytes of varying degree, as well as foci of primary clumping of myofibrils’ cytoplasm and myocytolysis. The immunohistochemical study of myocardial sections showed a decrease in the actin expression by 2.4 times (p < 0.05) and desmin – by 2 times (p < 0.05) in comparison with the control group. The results of the clinical study showed that dobutamine at a rate of up to 5.0 μg/kg/min does not cause an arrhythmogenic effect and/or lactic acidosis. Conclusion. The data obtained on structural changes of the myocardium confirm the need for the use of inotropic agent in burn shock. Dobutamine at a rate of up to 5.0 μg/kg/min allows for a restrictive strategy of fluid resuscitation and rapid recovery from burn shock.

We present a case report of stenting the aortic isthmus to manage a rare complication – stenosis caused by the patent ductus arteriosus occlude previously implanted to a child at the age of 7 months. After 7 years the patient was re-admitted to the cardiology hospital with the signs and symptoms of the aortic coarctation. The echocardiography revealed a peak pressure gradient of 40 mm Hg in the area of the aortic isthmus. The pressure gradient between the upper and lower extremities was 25-30 mm Hg. At the age of 8 the compromised blood flow in the aorta was completely resolved by stenting the aortic isthmus with covering of the implanted occluder. Andrastent XL (Andramed GmbH, Reutlingen, Germany) stent was implanted. Characteristics of this stent allow expanding it up to 14 mm. The pressure gradient in the area of the aortic isthmus was completely eliminated after the procedure. The effectiveness of the intervention was confirmed after 7 months with echocardiography. In conclusion, the aortic stenting using devices with the potential for further expansion as the child grows is justified due to its effectiveness, minimal invasiveness, and radical nature. Received 5 March 2022. Revised 10 July 2022. Accepted 11 July 2022. Informed consent: The patient’s informed consent to use the records for medical purposes is obtained. Funding: The study did not have sponsorship. Conflict of interest: Authors declare no conflict of interest. Contribution of the authors: The authors contributed equally to this article.

Представлен клинический случай стентирования перешейка аорты с целью устранения редкого осложнения — стеноза, вызванного окклюдером, который был имплантирован в открытый артериальный проток ребенку в возрасте 7 мес. Через 7 лет пациент повторно поступил в кардиологический центр с клиникой коарктации аорты, по данным эхокардиографии выявили пиковый градиент давления в зоне имплантации окклюдера 40 мм рт. ст., градиент давления между верхними и нижними конечностями 25–30 мм рт. ст. В возрасте 8 лет компрометацию кровотока в аорте полностью устранили стентированием перешейка аорты с армированием имплантированного окклюдера открытого артериального протока. Имплантировали стент Andrastent XL (Andramed GmbH, Ройтлинген, Германия), который можно раскрыть до 14 мм. При контрольной тензиометрии градиент давления на перешейке аорты полностью устранен. Через 7 мес. эффективность вмешательства подтвердили данными эхокардиографии. Тактика стентирования аорты устройством с потенциалом расширения по мере роста ребенка является обоснованной в силу эффективности, малоинвазивности и радикальности. Поступила в редакцию 5 марта 2022 г. Исправлена 10 июля 2022 г. Принята к печати 11 июля 2022 г. Информированное согласие Получено информированное согласие пациента на публикацию и использование медицинских данных в научных целях. Финансирование Исследование не имело спонсорской поддержки. Конфликт интересов Авторы заявляют об отсутствии конфликта интересов.

This work is devoted to the topical issue of surgery and anesthesiology, namely, anesthesia and sedation in circulatory shock, in particular, burn shock. The aim of the study was to evaluate the effectiveness and safety of ketamine analgosedation in the acute period of severe burn injury. The pilot study included 9 adult patients aged 15–70 years having a severe burn injury with an area of >40% of the body surface, who were in the intensive care unit for more than 3 days. Intensive care in burn shock was carried out according to the accepted national clinical guidelines. Ketamine after a preliminary bolus (0.25–0.5 mg/kg) was administered through a perfusor (up to 25 mg/h). According to the totality of clinical and laboratory data (dynamics of lactate level, pH, BE, urination rate), shock was controled by the end of the second day from the moment of injury. The assessment of the level of sedation on the RASS scale in patient treated with ketamine showed on average at the level of 2 points during the observation period, the need for narcotic analgesics was limited by the need to perform surgical procedures. Side effects of the use of ketamine (intestinal paresis, vomiting, development of delirium) were not observed. Thus, we can conclude that ketamine analgosedation is safe and effective in burn shock.

Despite of the growing number of patients, the understanding of diastolic dysfunction (DD) and heart failure with preserved ejection fraction (HFpEF) is still not sufficient. The pathophysiological mechanisms of HFpEF are not fully investigated. The mortality rate among patients suffering from heart failure with preserved ejection fraction is the same as among patients with heart failure and reduced ejection fraction. At the moment, the diagnosis and treatment of patients with HFpEF has not been optimized despite these alarming trends. Echocardiography is the main diagnostic tool. The identification of clinically significant echocardiographic changes, even without an evident clinical picture, can contribute to a change in the patient's treatment plan or a revision of surgical tactics and anesthetic management.

In the literature devoted to the problems of liver transplantation, there is no clearly indicated attitude of the authors to intraoperative epidural blocks, although theoretically the benefits of a sympathetic block are considered. Some sources recommend prophylactic sodium bicarbonate infusion to alleviate post-reperfusion syndrome, but its effectiveness is questionable. Purpose: to present the physiological, biochemical and hematological characteristics of recipients at the stages of orthotopic liver transplantation with an assessment of the feasibility of using sodium bicarbonate for the prevention of reperfusion complications. Materials and methods. An observational study, contains an analysis of data from 39 participants operated on in 2020 in the volume of: hepatectomy, an orthotopic liver transplantation, with an initial assessment on the Child- Turcott- Pugh scale of 11 points. All participants were operated on under general inhalation anesthesia with sevoflurane and thoracic epidural three- component anesthesia according to the Breivik- Niemi method. There are 3 stages of data registration: the beginning of the anhepatic stage; the beginning of the neohepatic stage; the end of the operation. Results and discussion. Significant fluctuations in hemodynamics, violations of the acid-base state and energy metabolism were not revealed; a decrease in hepatic protein synthesis, a shift of the P50 point to the left, and moderate metabolic acidosis did not exceed the levels described in the literature. The dynamics of acidosis, РСО2 and natremia did not depend on the infusion of soda. There was no close correlation between arterial blood pH and lactate concentration. Conclusion. The benefits and safety of epidural anesthesia in orthotopic liver transplants are obvious and make it possible to recommend this component as a routine element of anesthesia during these operations. The indications for sodium bicarbonate infusion should be narrowed and consensus is needed to determine the critical pH value for sodium bicarbonate infusion.

Introduction. The prevalence of colorectal cancer in the world is increasing every year. In more than 40% of patients, the disease debuts with a clinical picture of acute intestinal obstruction, while in one third of cases the tumor is located in the right half of the colon. This leads to the necessity to perform colon resection or bypass surgery, the main stage of which is making entero- colic anastomosis. However, up to 15% of these anastomoses has a leakage. Development of methods of forming a reliable anastomosis is thus critical.Materials and methods. 37 patients with acute intestinal obstruction, divided into 2 groups (17 and 20 people), are included into the study. All of them, as a surgical stage of treatment, underwent a right hemicolectomy with the formation of an entero- colic anastomosis or a bypass surgery. A double-row side-to-side anastomosis was used in the comparison group, and a single-row “end-to-side” anastomosis in the main group (patent No. 2709253). The incidence of anastomotic leakage and mortality were assessed. Comparison was performed using Fisher’s exact test.Results. There were no cases of anastomotic leakage and mortality in the main group. In the comparison group, there were 5 leakages and 1 death.Discussion. When a modified entero-colic anastomosis is formed, adequate blood flow is maintained in the walls of the anastomosed intestinal loops, which contributes to adequate regeneration.Conclusion. The first clinical experience with the modified end-to-side entero- colic anastomosis is successful. It is planned to further recruit patients and study the features of the postoperative period.

The category of newborns with congenital malformations is considered the most difficult to treat. The influence of “stress”factors on the body in a short period of time triggers a pathogenetically determined chain reaction that leads to the development of multiple organ failure syndrome. The forecasting methodology determines the timeliness and directions of intensive care to approach and achieve positive results in this group of patients.The aim of the study: is to show the diagnostic and practical value of metabolic markers and functional indicators of homeokinesis in newborns with congenital malformations of the gastrointestinal tract.Materials and methods. An observational study of 81 patients in the neonatal period. The prognostic assessment of functional parameters and biochemical markers was performed by ROC analysis.Results. In newborns with malformations of the gastrointestinal tract, the course of the pre-and early postoperative period is associated with cardiopulmonary maladaptation, which requires the protection of vital functions. By the end of the first week, priority is given to therapy aimed at restoring the motility of the gastrointestinal tract. The prognostic value of the adverse outcome was determined: stress index greater than 3503 Sp = 98.36% (95%CI 86.3–99.2) and Se = 99.2% (95%CI 87.3–100), lactatemia level greater than 3.3 mmol/L Sp = 73.7% (95% CI 59.6–84.7) and Se = 93.6% (95% CI 78.9–100). The control of the infectious process and the selection of antibacterial therapy is important, since the risks of developing septic shock are high. Prolonged epidural analgesia is the optimal method of analgesia and is indicated in suspected cases of failure to achieve 75% of the volume of enteral nutrition by the week of the postoperative period Sp 85.42% (95%CI 48.2–97.7), Se 46.8% (95% CI 62.0–84.2).Conclusions. Prognostic models allow predicting the outcome of critical conditions and timely adjusting the volume of therapy.

The aim of the study is the evaluation of results of endoscopic tunnel interventions in submucosal tumors and achalasia.Material and methods. Endoscopic tunnel interventions during 2017–2020 years were performed in 80 patients (34-men, 46-women). The duration of the age ranged from 15 to 72 years. The indications for interventions were: achalasia in 53, subepithelial tumors in 27.Results. During the intervention, complications occurred in 22 patients. Among the complications: carboxyperitoneum in 16 cases, carboxytorax in 2, esophageal mucosa perforation in 2, bleeding moderate intensity bleeding in 2. Most of the complications (20) were in patients with esophageal achalasia. Postoperative complications were observed in two patients operated for esophageal achalasia (bleeding and hematoma, esophageal mucosa necrosis). All patients were treated by using conservative methods. The results of the interventions were assessed in terms of 1 month to 3 years. There were no violations of food or liquid the passage through the cardia. Patients after operation for submucous tumors of the esophagus had no complaints. The main complaint of patients after myotomy was heartburn. Endoscopic examination revealed erosive reflux esophagitis (A-C) in 18 patients.Conclusion. Tunnel endoscopic interventions in patients with esophageal achalasia and submucous tumors are highly effective and low-traumatic, allowing relatively safe restoration of the patency of the cardia and removal of the subepithelial neoplasm. The problem of gastroesophageal reflux after oral endoscopic myotomy requires further accumulation of data in order to develop optimal tactics. The limiting factor for the these operations performance is the material and technical equipment of medical institutions and the lack of trained specialists.

Aim. To analyze in-hospital and long-term (12 months) results of percutaneous coronary intervention (PCI) supported by extracorporeal membrane oxygenation (ECMO) in patients with stable coronary heart disease and multivessel coronary artery disease, and to justify the use of such approach in the treatment of this group of patients.Methods. The retrospective analysis included 13 patients with stable coronary artery and multivessel coronary disease. The mean SYNTAX score before the intervention was 31.4±10.8. Between 30 days and 12 months in the postoperative period, the frequency and type of the following major adverse cardiovascular events (MACE) was assessed: all-cause death, myocardial infarction, stroke, repeat revascularization. Twelve months after the event, the data on the frequency and type of adverse cardiovascular events were collected by means of telephone follow-up.Results. Coronary intervention supported by ECMO was performed in all patients. 8 (61.6%) patients required an open surgical approach for ECMO cannula insertion. Door to balloon time was 109.6±79.2 minutes. The mean duration of ECMO support was 101.7±45.4 minutes. Haemodynamic instability, abnormalities in pulmonary gas exchange and rhythm disturbances were not revealed during primary PCI, making it possible to wean off the ECMO post-PCI. The mean residual SYNTAX score was 9.3±11.8. BARC class ≥3 bleeding complications were observed in 6 of 13 patients. Long-term major adverse cardiovascular events with fatal outcomes occurred in 3 (23.1%) patients.Conclusion. Supporting high-risk PCI with ECMO in patients with stable coronary artery disease, multivessel coronary artery disease and low left ventricular ejection fraction made it possible to successfully perform the intervention in all patients. Nevertheless, the long-term (12 months) results show a high percentage of recurrent myocardial infarction, which can be associated with high residual SYNTAX score.

Ganyukov, Vladimir; Sucato, Vincenzo; Vereshchagin, Ivan; Kochergin, Nikita; Tarasov, Roman; Shukevic, Dmitry; Shilov, Aleksandr; Ganyukov, Ivan; Kornelyuk, Roman; Diana, Davide; Vadala, Giuseppe; Galassi, Alfredo R. Author Information

Hypernatremia along with septic complications is the most frequent and dangerous complication in patients with severe burn trauma. The intravenous infusion of hypoosmolar solutions is considered to be a common tactic in overcoming critical hypernatremia, although the safety and effectiveness of this approach is questioned. The aim of the work was to clarify the pathogenesis of hypernatremia and define the tactic for its correction in the acute period of severe burn trauma. Material and Methods. The retrospective study included 82 adult patients treated in the ICU of the Burn Trauma Center of Novosibirsk Regional Clinical Hospital between 2015–2018 years. There were patients both with partial thickness burns TBSA >40 % or with full thickness burns TBSA 20 % with or without the thermoinhalation trauma. Results. Hypernatremia (serum Na > 150 mmol/L) usually occurred 4–6 days after a severe burn injury. This complication was detected in 27 % of patients. Cortisol serum levels were at the upper limit of the norm, meantime the serum concentration of aldosterone was significantly increased on 3rd day after trauma. Based on the obtained data, hypernatremia was corrected using enteral rehydration (oral water up to 20–30 ml/kg/day), Spironolactone (200–300 mg/day), intravenous titration of furosemide in small doses (60–100 mg/day). Permanent renal replacement therapy started when a patient›s serum sodium level was greater than 160–163 mmol/L. Conclusion. Significant increase of the serum aldosterone concentration in patients with severe burn trauma was noted by the 3 day, so the use of spironolactone should begin in these terms. Titrated intravenous introduction of furosemide in small doses (60–100 mg/day) allows removing sodium without adverse effects. In addition, the use of additional enteral rehydration is necessary.

Purpose of the study: to evaluate the organoprotective effects of veno-arterial extracorporeal membrane oxygenation and intra-aortic balloon pump during high-risk percutaneous coronary intervention in acute coronary syndrome.Materials and methods. Patients required mechanical circulatory support (n=51) were divided into two study groups: patients who received mechanical circulatory support by veno-arterial extracorporeal membrane oxygenation (ECMO) (Group 1, n=29) during high-risk percutaneous coronary intervention, and Group 2 patients who received mechanical circulatory support by intra-aortic balloon pump (IABP) during high-risk percutaneous coronary intervention (Group 2, n=22). The dynamics of instrumental parameters and laboratory markers of organ damage were evaluated by electrocardiography, echocardiography, determining troponin I, creatine phosphokinases and creatinine levels, NGAL, venous blood saturation to compare the organoprotective properties of mechanical circulation support in the intra- and postoperative period.Results. The following values of the parameters were found the next day after the intervention: troponin I — 0.18 (0.1; 2.3) ng/ml in the ECMO group and 1.64 (0.92; 2.36) ng/ml in the IABP group (P=0.045); serum NGAL —139.4 (88.1; 166.7) ng/ml in the ECMO group and 212.3 (102; 279) in the IABP group (P=0.027); renal dysfunction (stages R, I, F according to RIFLE) — 2 (6.8%) observations in the ECMO group and 7 (31.8%) in the IABP group (P=0.021); multiple organ failure (2 or more points according to SOFA) — 3 (10.3%) cases in the ECMO group and 12 (54.5%) in the IABP group (P=0.001).Conclusion. Veno-arterial ECMO in comparison with IABP has a more pronounced organoprotective effect by achieving better hemodynamic stability, which, in turn, prevents hypoxia and the subsequent development of organ dysfunction. In addition, in conditions of veno-arterial ECMO, better completeness and quality of revascularization is ensured, and hospital mortality is also reduced.

determinant factor of sepsis severity, as an exact diagnostic criterion, and as an object of therapy Streltsova Е.I. 1, 2 , Peshkova I.

AIM The purpose of the study was to analyse clinical peculiarities of the development of acute coronary syndrome in patients after coronary artery bypass grafting procedures and to evaluate the in-hospital results of treatment PATIENTS AND METHODS: Within the frameworks of a single-centre register over the period from 2006 to 2016 the study included 81 patients (with a total of more than 5000 coronary artery bypass grafting operations performed during this period). We examined the preoperative, intraoperative, and in-hospital periods, as well as the patients' status at the moment of the development of the clinical course of acute coronary syndrome, its structure and terms of manifestation, the dynamics of the coronary bed condition, also carrying out the analysis of treatment strategies and the in-hospital outcomes thereof. RESULTS The development of acute coronary syndrome after coronary artery bypass grafting procedures was revealed in patients with a mean age of 58 (52; 63) years, with a history of postinfarction cardiosclerosis (70.37%), arterial hypertension (92.59%), dyslipidemia (51.83%), obesity (77.78%) and a multiple-vessel lesion of the coronary bed (67.90%) of intermediate risk according to the SYNTAX score estimated as an average of 26 (22; 32) points. In the structure of acute coronary syndrome having developed in patients with previously endured coronary artery bypass grafting operations, prevailing was its form of non-ST-segment elevation (87.65%), predominantly of a low risk (61.73%) which manifested itself averagely 24 (12; 35) months after the operation. The main factor of the development of acute coronary syndrome was progression of atherosclerosis (60.49%). The dominating strategy of treatment was medicamentous therapy (55.56%). The in-hospital mortality rate amounted to 2.47%. In the dynamics of the clinical status of the patients prior to coronary artery bypass grafting by the moment of the manifestation of acute cardiac ischaemia there took place a significant decrease in the left ventricular ejection fraction (p=0.01) and progression of atherosclerosis to the multifocal status (p=0.004). CONCLUSION Patients with acute coronary syndrome, having previously endured coronary artery bypass grafting procedures appear to belong to a special cohort presenting with a series of clinical peculiarities and despite satisfactory in-hospital results do require special attention, with the development of appropriate algorithms for risk stratification and optimal therapeutic decision-making.

The aim of the study was to develop a prognostic model based on statistical discriminant analysis to assess the risk of postoperative disturbance of cardiac conduction and paraprosthetic regurgitation after transcatheter aortic valve replacement. Materials and Methods. Clinical data of 10 patients implanted with CoreValve (TM) prostheses (Medtronic Inc., USA) were used to develop prognostic models. To that end, we analyzed changes in hemodynamic and functional parameters provided by echocardiography in the pre- and postoperative periods. Results. We observed significant positive changes in the severity of left ventricular myocardial hypertrophy; on the contrary, volume indicators did not significantly change, which might be associated with the concentric type of left ventricular hypertrophy. The discriminant analysis made it possible to determine major (preoperative) morphological and functional indicators associated with the two most common complications of the procedure: left bundle branch block and paraprosthetic regurgitation. Left ventricular posterior wall thickness, interventricular septal thickness, left atrium dimension, and myocardial mass are the critical factors that determine the development of these complications. Conclusion. In the prognostic model, the proposed weighting coefficients allow one to assess the risk of postoperative complications; however, the presence of false-positive results requires further refinement of these coefficients within the linear equation.

Aim To evaluate cardioprotective effects of combined intracoronary phosphocreatine and succinic acid administration after primary percutaneous coronary intervention (PCI) in patients with ST elevation acute coronary syndrome who were present within 12 hours of symptom onset. Methods Seven patients with STEMI presenting within 12 hours of onset of symptoms and thrombotic occlusion of the left anterior descending artery were included in the study. Evaluation of efficiency and safety was performed with the recording of major adverse cardiac events, evaluation of the procedure success, and the rate of composite endpoints. Results Six (85.7%) patients after primary PCI showed TIMI grade 3 flow on control coronary angiography. None complications had been reported after intracoronary administration of phosphocreatine and succinic acid. Acquired left ventricular aneurysms were found in two patients in the in-hospital period. One patient was readmitted with acute coronary syndrome without ST-segment elevation. Coronary angiography reported restenosis of the previously implanted stent. No definite increase in the left ventricular ejection fraction had been found in the in-hospital and long-term period. Conclusion There were no evidences on definite increase in myocardial contractility. The obtained results might partially be explained by the median symptom-to-balloon time over 400 minutes.

Purpose. To assess changes in nucleic acid (NA) metabolism in severe burn injury and to develop recommendations for correction of the alimentary status taking into account changes in the NA metabolism. Materials and methods. All patients (37 patients with II–III degree thermal burns and a burn area of more than 40%) were divided into 2 groups: Group I included survivors (23 patients), group II consisted of the deceased. The intensity of the NA metabolism was assessed based on the dynamics of the of uric acid (UA) and oligonucleotides serum concentrations. Results. In the acute period of burn injury, marked decrease in UA levels (less than 100 μmol/l), with gradual stabilization in survivors is typical. In addition, a 2–3-fold increase in the concentration of serum oligonucleotides compared to the normal limit is typical for survivors in the acute period, and these changes were significantly different from the group of deceased patients starting from day 5. Taking into account the data obtained, the level of serum UA can be recommended in clinical practice for the assessment of alimentary status in burn disease, as well as a criterion for f the prescription of glutamine administration in critically ill patients. In patients with burn disease a decrease in the UA level to less than 100 μmol/l was regarded as an absolute indication for the use of L-glutamine products. The use of glutamine in patients with significant decrease in UA levels was accompanied by a significant increase in the intensity of NA metabolism, which was demonstrated by both an increase in uric acid levels (by 85% by day 10 after the start of glutamine administration, P<0.01) and restoration of repair processes. Conclusion. Therefore, there was a marked alteration of NA metabolism in both groups of patients with severe burn injury. At the same time, surviving patients are characterized by rapid recovery of NA metabolism. Glutamine was employed as a pharmacological agent that effectively abrogates the depression of NA metabolism.