Acute respiratory distress syndrome (ARDS) is a serious challenge in the contemporary reanimatology due to its prevalence, versatility of pathogenesis mechanisms, and continuously high mortality. The development of an uncontrolled cascade of systemic inflammation reactions, ‘cytokine storm’, followed by multiple organ failure (MOF) is an essential pathophysiological trigger of acute lung injury. Besides, critically ill patients are characterized by a relative intestinal ischemia, wherein, according to the ‘intestine-lung axis’ concept that treats intestinal and pulmonary epithelium as a continuous surface, translocation of bacteria and/or endotoxin directly into blood flow might occur. Extracorporeal removal of excessively produced inflammatory response mediators and endotoxin (bacterial lipopolysaccharide, LPS) from systemic circulation by selective hemosorption might represent a life-saving approach in sepsis.Purpose: to evaluate the efficacy of selective sorption in a combined therapy for acute lung injury related to postoperative injury after lung cancer surgery.Results. A single 4-hour selective sorption procedure in the combined therapy of a critically ill postoperative patient produced fast (within 24 hrs.) effects: decreased leukocytosis (the leukocyte count fell down from 32X109 to 13X109, L-1) and endotoxin activity (EAA — from 0.67 to 0.32, units), reduced blood plasma anti-inflammatory cytokine (IL-6 — from 1860 to 62, pg/ml) and procalcitonin (PCT — from 46 to 0.32, ng/ml), recovery of gas exchange, discontinuation of hemodynamic support with pressor amines as no longer needed (as early as 2 hours after sorption).Conclusion. The clinical case of a successful therapy including selective sorption based on hyper-crosslinked styrene-divinylbenzene copolymer with immobilized LPS-selective ligand warrants further clinical studies on the efficiency of a novel selective hemosorption column use to correct post-radical respiratory complications in oncological patients.
Objective. To evaluate resistance rates to carbapenems and III–IV generation cephalosporins among gramnegative bacteria, including production of carbapenemases and extended-spectrum beta-lactamases (ESBL). Materials and Methods. A total of 460 gram-negative bacteria isolated from hospitalized patients aged 1 to 85 years from 8 medical institutions of Rostov-on-Don and the region from April 2018 to December 2019 were tested by conventional microbiological methods. The most common acquired carbapenemases genes were determined by real-time PCR using commercial kits (Central Research Institute of Epidemiology, Russia). Results. The tested isolates included 180 (39.1%) isolates of K. pneumoniae, 87 (18.9%) – E. coli, 101 (22.0%) – A. baumannii and 92 (20.0%) – P. aeruginosa. K. pneumoniae and E. coli isolates exhibited the high resistance rates to cefotaxime – 96.7% and 71.2%, to ceftazidime – 95.5% and 54.0%, and to cefepime – 95.5% and 54.0%, respectively. ESBL production was detected in 35.0% and 78.2% of K. pneumoniae and E.coli isolates, respectively. K. pneumoniae and E. coli isolates were resistant to imipenem, meropenem, and ertapenem: 57.8% and 3.4%; 55.0% and 2.3%; 60.0% and 4.6%, respectively. Carbapenemase production was detected in 27.8% of K. pneumoniae and 4.6% of E. coli isolates. The most common beta-lactamases were metallo-beta-lactamases (NDM) and serine carbapenemases (OXA-48). A. baumannii isolates showed the high resistance rates to imipenem and meropenem (87.1% and 85.1%). The most common beta-lactamases were metallo-beta-lactamases (NDM) and serine carbapenemases (OXA-24⁄40 and OXA-23). P. aeruginosa isolates also showed the high resistance to carbapenems – imipenem (61.9%) and meropenem (58.7%). The most common betalactamases were metallo-beta-lactamases (VIM) and GES-5. Conclusions. The results of this microbiological study indicate the extremely high prevalence of aerobic gram-negative bacteria in different infections. A. baumannii, P. aeruginosa, K. pneumoniae and E. coli isolates being resistant to third- and fourth-generation cephalosporins and carbapenems are particularly dangerous, especially due to production of ESBL and carbapenemases. The most clinically important are OXA and NDM beta-lactamases.
Objectives: to analyze the prevalence of strains of gram-negative bacteria - pathogens of infectious complications resistant to carbapenems, including through the production of carbapenemases isolated from various clinical biomaterials in hospitalized patients of hospitals in the city of Rostov-on-Don.Materials and methods: 366 gram-negative bacterial isolates were studied, from patients from 16 wards, 9 treatment-and-prophylactic institutions of the city of Rostov-on-Don and the region. The study was conducted by traditional microbiological method. Species identification of strains and sensitivity to antimicrobial drugs were determined on a Vitek 2 automatic analyzer (BioMerieux, France). The strains insensitive to carbapenems were tested for the presence of carbapenemases using CIM-test. MBL was detected by the effect of suppression of their activity in the presence of EDTA. MBL genes were detected by PCR-RV test kit “AmpliSens MDR MBL-FL”, “AmpliSens MDR KPC/OXA-48-FL”. The conclusion about the production of BLRS was made by the presence of synergism of cephalosporins of III-IV generation with clavulanic acid by the method of double discs.Results: of the 366 isolates tested, gram-negative bacteria accounted for 74.2 %: Klebsiella pneumoniae — 33.0 %, Escherichia coli — 19.0 %, Acinetobacter baumannii — 18.0 %, Pseudomonas aeruginosa — 15.0 %. Resistance to carbapenems was detected in 90.9 % of A.baumannii strains, more than 50 % of P.aeruginosa and K.pneumoniae. LBR production was detected in more than 90 % of K.pneumoniae and about 80 % of E. coli. In A. baumannii and K.pneumoniae isolates, the presence of OXA and NDM genes was found, and in P.aeruginosa, VIM groups.Conclusion: enterobacteria resistant to beta-lactams, producing extended-spectrum beta-lactamases and carbapenemases are one of the leading causative agents of infectious complications in hospitals of Rostov-on-don and the region, almost not inferior in frequency of occurrence of bacteria of the genus Acinetobacter spp. and Paeruginosa. This determines the importance of detection of resistance mechanisms not only for the purpose of optimal etiotropic therapy, but also for epidemiological control of the spread of resistant strains and the development of infection control measures.
Objective: to assess perspectives using biomarkers for early detection of developing acute kidney injury (AKI) among patients during partial nephrectomy under the warm ischemia of the kidney. Materials and methods: data of 100 patients was assessed with a localized renal cancer Т1N0М0 aged 56,5±8,7 years. All the patients underwent partial nephrectomy under warm ischemia of the kidney. The concentration of the following “early markers of AKI” was tested in blood of the patients using the ELISA technique and standard test-systems: cystatin С (BioVendor, Czech Republic), NGAL (BCMDiagnostics, USA), L-FABP (Hycult Biotechnology, Netherlands). The duration of warm ischemia was also fixed and the rate of diuresis was valued either. The test was carried out 24 hours prior to and 16 hours after the surgical interference. All the patients were diagnosed and classified by the presence or absence of AKI during the early postoperative period according to the generally accepted classification KDIGO. The obtained results were processed with the help of Microsoft Excel software, the statistical reliability of the results was defined on the basis of the use of Wilcoxon non-parametric test. Simultaneously the expert analysis of the clinical data and results of the laboratory research was carried out. Results: the method of the early diagnostics of AKI among patients who underwent partial nephrectomy under the warm ischemia of the kidney was developed. The method is based on the successive identification of the concentration of the early biochemical markers of AKI, the duration of warm ischemia and the rate of diuresis. Conclusions: the use of the developed method allows diagnosing the development of AKI among patients undergoing partial nephretomy under the warm ischemia already in 16 hours after the surgical interference (before the rise in the creatinine level).
Цель исследования-изучить влияние эпидуральной блокады на функциональное состояние почек у больных локализованным раком при поведении резекции почки в условиях тепловой ишемии. Материал и методы. Обследовали 45 больных (25 мужчин и 20 женщин) локализованным раком почки T 1 N 0 M 0 в возрасте 56,5±8,7 года. Всем больным выполнили резекцию почки в условиях тепловой ишемии (15-20 минут). Больных разделили на 2 группы: основную (25 человек), в которой в периоперационном периоде применяли эпидуральную блокаду, и контрольную (20 пациентов)-без эпидуральной блокады. В крови и моче методом ИФА исследовали-цистатин С, L-FABP, КИМ-1 , ИЛ-18, а также СКФ. Обследование проводили за 1 час до операции, через 20 минут после этапа тепловой ишемии, в 1-е и 3-и сутки. По исходной концентрации цистатина С в крови больные каждой группы были разделены на 2 подгруппы: 1-концентрация цистатина С 1000 нг/мл и ниже, 2-выше 1000 нг/мл. Статистическую обработку результатов проводили с использованием пакета программ «Statistiсa 6.0» по t-критерию Стъюдента для 2-х независимых выборок. Различия считали статистически значимыми при p<0,05. Результаты. Установили, что при выполнении резекции почки в условиях тепловой ишемии функциональные показатели почек к 3-м суткам после операции на фоне проводимой в периоперационном периоде эпидуральной блокады соответствовали исходным. В контрольной группе наблюдали нарушения со стороны тубулоинтерстиция и гломерулярного аппарата. Значения СКФ у больных основной группы к 3-м суткам сохранялись в пределах нормальных значений, тогда как у больных контрольной группы СКФ была снижена относительно исходных значений на 38,8% (p<0,05). Заключение. Применение в периоперационном периоде эпидурального блока у больных локализованным раком почки, подвергнутых резекции органа в условиях тепловой ишемии, оказывает нефропротективное влияние, обеспечивая сохранение функциональных показателей почек на исходном уровне. Ключевые слова: локализованный рак почки; тепловая ишемия; острое почечное повреждение; маркеры острого почечного повреждения; эпидуральная блокада The purpose of the study is to investigate the effect of epidural block on the functional state of the kidneys in patients with localized cancer during kidney resection under the conditions of warm ischemia. Materials and methods. We examined 45 patients (25 men and 20 women) with a localized kidney cancer (T 1 N 0 M 0) aged 56.5±8.7 years. All the patients underwent kidney resection performed under conditions of warm ischemia (15-20 minutes). Patients were divided into 2 groups: the main group (25 subjects) in which the perioperative epidural block was applied and the reference group (20 patients) without the epidural block. The following parameters were tested in blood and urine using the ELISA technique: cystatin C, L-FABP, KIM-1 , IL-18, and GFR. The test was carried out 1 hour prior to surgery, 20 minutes after the warm ischemia stage, and on Days 1 and 3. Based on the baseline cystatin С level, the patients in each group were divided into 2 subgroups: subgro...
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