Publications by authors named "A Petrovskaya"

7 Publications

ROLE OF THROMBODYNAMICS GLOBAL COAGULATION TEST IN IMPROVING TREATMENT RESULTS IN PATIENTS WITH CORONAVIRUS INFECTION AT A COVID-19 HOSPITAL.

Georgian Med News 2021 Apr(313):72-79

First Moscow State Medical University I.M. Sechenov (Sechenov University), Russian Federation.

The aim of the study was to evaluate the effectiveness of the global coagulation test of thrombodynamics for monitoring and correcting the hemostatic system and improving the results of complex treatment in patients with SARS-CoV-2 in the COVID hospital. From April 2020 to December 2020 on the basis of the University Clinical Hospital No. 4 of the First Moscow State Medical University named I.M. Sechenov (Sechenov University) of the Ministry of Health of the Russian Federation 245 patients between the ages of 27 and 89 with SARS-CoV-2 associated pneumonia were treated. The mean age of the patients was 56.7 ± 4.2 years. All patients participating in the study were divided by simple randomization into two groups. The volume of lesion of the lung parenchyma was assessed according to the data of computed tomography. All patients were treated for SARS-CoV-2 in a comprehensive manner in accordance with the temporary guidelines of the Ministry of Health of the Russian Federation with the mandatory prescription of low molecular weight heparins (LMWH). Assessment and correction of the hemostasis system in 177 patients (47.7%) of group 1 was carried out daily using local coagulation tests (LCT), including APTT, PT, TT, PTI, INR, Fibrinogen and D-dimer level. The second group included 128 patients (52.3%), who, in addition to local coagulation tests, used the integral coagulation test - the thrombodynamics test- to assess and correct the state of the hemostatic system. Assessment and correction of hemostasis were performed at the control points (1, 7, 14 days) of the study. Compared to LCT, the thrombodynamics test reliably more often revealed the state of hypercoagulability, which was promptly corrected by increased doses of LMWH in group 2. Positive dynamics of clinical symptoms were detected in patients of group 2 1.8 times more often than in group 1 (p<0.05): fever and shortness of breath in group 2 decreased faster, the SpO2 index recovered more rapidly, especially in patients with severe hypoxia (with SpO2<90), the number of patients with moderate and severe severity by the third point of the study in group 2 was 1.8 times less than in group 1 (p<0.05). Severe forms of lung damage (CT-3 and CT-4) were detected in group 2 3.2 times less frequently (p <0.01) compared with group 1, and the number of deaths was 3.3 times less frequent (p<0.01) by the end of the study. The average bed-day in group 2 of patients (15±1.6 days) was 1.6 times shorter than in group 1 (24±7.2 days). Hemorrhagic complications were not recorded, despite the therapeutic doses of LMWH in patients of group 2. The severity of the condition of patients with SARS-CoV-2 and the dynamics of their symptoms depend on the state of microcirculation in the lungs and in the periphery and on the volume of thrombotic lesions. Anticoagulant therapy prescribed as early as possible in adequate therapeutic doses in patients with SARS-CoV-2 associated viral pneumonia made it possible to achieve positive treatment results. The use of the global coagulation thrombodynamics test has shown high efficiency for the timely assessment and correction of the state of the hemostasis system.
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April 2021

[COMPLEX TREATMENT OF PATIENTS WITH VENOUS TROPHIC ULCER IN THE CONDITIONS OF COVID-19 HOSPITAL].

Georgian Med News 2021 Mar(312):7-14

Federal State Autonomous Educational Institution of Higher Education I.M. Sechenov First Moscow State Medical University (Sechenov University) of the Ministry of Health of the Russian Federation.

The aim of the study was to study the effectiveness of complex treatment of decompensated chronic venous insufficiency (CVI) using innovative techniques and proteolysis inhibitors with a wide spectrum of activity in patients with SARS-CoV-2 (COVID-19) in COVID hospital. This study was performed in the surgical department of COVID hospital on the basis of the Clinical Hospital No. 4 of the First Moscow State Medical University named I.M. Sechenov (Sechenov University). During the period from April 2020 to February 2021, 32 patients with confirmed SARS-CoV-2 (COVID-19) and the presence of venous trophic ulcers (VTU) of the lower extremities were treated. All patients underwent complex therapy for viral pneumonia in accordance with the order of the Ministry of Health of the Russian Federation. The protease inhibitor Aprotinin (Gordox ™) was used to improve microcirculation and prevent the development of a "cytokine storm". To accelerate the cleansing and epithelialization of venous trophic ulcers, the surface of the trophic ulcer was treated with an air plasma flow of NO and injections into the trophic ulcer of autoplasma. Against the background of complex treatment, all patients showed positive dynamics of the clinical picture: relief of hyperthermia, increase or stabilization of SpO2 values from 95% and above, significant decrease in CRP, LDH, D-dimer indices, increase in the number of lymphocytes, decrease in the VTU area by 1.5 times, active granulation and marginal epithelialization of the ulcer. In 14 patients (43.8%), complete epithelialization of the VTU defect was noted by the end of the third week. According to the CIVIQ-20 questionnaire, all 32 patients participating in the study showed positive dynamics. There were no lethal outcomes. Multicomponent therapy of decompensated forms of CVI of the lower extremities in the COVID hospital in patients with moderate severity of coronavirus infection with the use of proteolysis inhibitors leads to a rapid relief of symptoms of intoxication, prevents the progression of lung tissue and parenchymal organ damage and contributes to the positive dynamics of healing of ulcerative defects in the vast majority of patients.
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March 2021

Examining the effects of transcranial direct current stimulation on human episodic memory with machine learning.

PLoS One 2020 9;15(12):e0235179. Epub 2020 Dec 9.

Vivian L. Smith Department of Neurosurgery, University of Texas Medical School at Houston, Houston, Texas, United States of America.

We aimed to replicate a published effect of transcranial direct-current stimulation (tDCS)-induced recognition enhancement over the human ventrolateral prefrontal cortex (VLPFC) and analyse the data with machine learning. We investigated effects over an adjacent region, the dorsolateral prefrontal cortex (DLPFC). In total, we analyzed data from 97 participants after exclusions. We found weak or absent effects over the VLPFC and DLPFC. We conducted machine learning studies to examine the effects of semantic and phonetic features on memorization, which revealed no effect of VLPFC tDCS on the original dataset or the current data. The highest contributing factor to memory performance was individual differences in memory not explained by word features, tDCS group, or sample size, while semantic, phonetic, and orthographic word characteristics did not contribute significantly. To our knowledge, this is the first tDCS study to investigate cognitive effects with machine learning, and future studies may benefit from studying physiological as well as cognitive effects with data-driven approaches and computational models.
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http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0235179PLOS
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7725363PMC
January 2021

The Role of Catecholamines in the Development of Pathological Retina Neovascularization in an Experimental Model of Retinopathy of Prematurity in Rats.

Dokl Biochem Biophys 2019 Nov 4;489(1):373-376. Epub 2020 Mar 4.

Koltzov Institute of Developmental Biology, Russian Academy of Sciences, 119334, Moscow, Russia.

This work is dedicated to proving our hypothesis that catecholamines and their metabolites play a crucial role in the development of retinopathy of prematurity, which leads to progressive uncontrollable vascularization in the retina, leading to blindness. The study was performed in an animal model of retinopathy of prematurity, which was achieved by hyperoxygenation in rats on postnatal days 7, 14, 21, and 30. The content of catecholamines and their metabolites in the retina of rats was determined by high performance liquid chromatography with electrochemical detection. It was shown that, in the rats with retinopathy, the content of L-DOPA on days 21 and 30 was decreased as compared to the control, whereas the content of noradrenaline on day 14 life increased compared to the control. However, we did not observe changes in the content of dopamine in the experimental animals relative to the control in any period studied. Given the published data on the involvement of catecholamines in the regulation of vasculogenesis in the retina in normal state, our data on the changes in the catecholamine metabolism in the retina in the model of retinopathy of prematurity can be regarded as evidence of the important role of catecholamines in the pathogenesis of this severe disease.
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http://dx.doi.org/10.1134/S160767291906005XDOI Listing
November 2019

[The 'missing' of the duodenum].

Khirurgiia (Mosk) 2018(11):66-67

Chair of faculty-based surgery #2, Sechenov First Moscow State Medical University, Moscow, Russia.

The article presents the outcome in patient with duodenal congenital abnormality caused by defective intrauterine rotation of the intestinal tube with premature turn of back intestine.
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http://dx.doi.org/10.17116/hirurgia201811166DOI Listing
May 2019