ABSTRACT
Due to the rather specific course of COVID-19, the question of what day after the start of hospitalization should be expected to be the maximum risk of death in patients both during hospitalization and after discharge is relevant. Aim. The aim of the study was to determine the time of maximum risk of death during hospitalization of patients with COVID-19 as well as after their discharge from the hospital. Methodology and Research Methods. A total of 2, 410 patients hospitalized with a diagnosis of COVID-19 were retrospectively studied. Inhospital 28-day mortality rate was 131 patients, and 28-day mortality rate after discharge from the hospital was 9. The accelerated failure time model (AFT) was used to determine the time of maximum risk of death in patients with COVID-19 after hospitalization as well as after discharge from the hospital during the period up to 28 days. Results. Without taking into account the influence of pathological values of other risk factors, lethal outcomes in patients occurred on days 9-11 after admission to hospital. Age over 60 years and the elevated levels of D-dimer, glucose, urea, creatinine, AST, and C-reactive protein were the risk factors (p < 0.01) that shortened the time to death, except for total protein, which lengthened this period. The maximum risk of death in patients after discharge from the hospital occurred on days 13-25, and an increase in creatinine and a decrease in INR were associated with a shorter time to death. Conclusion. The periods of maximum risk of death as well as the factors affecting these periods in patients with COVID-19 were determined for both hospital stay (days 9-11) and time after discharge from hospital (days 13-25). © 2022 Tomsk State University. All rights reserved.
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Background. The sudden emergence and rapid spread of the novel coronavirus infection (COVID-19) caused tremendous burden on the health care system including the economic one. In this regard, many questions concerning the prioritization of funding for various restrictive and preventive procedures have arisen;also the introduction of various intervention methods for monitoring and timely treatment of post-COVID consequences became an urgent problem. These challenges actualized the development of pharmacoeconomic methods that improve the quality of decisions making in such extreme conditions. Objective(s): to systematize available studies on the assessment of the global economic burden of the novel coronavirus infection. Material and methods. A feature of the proposed review design was the highlighting of the observed shortcomings and areas in which scientists make additions to the assessment methods taking into account the chronology of the pandemic determining changes in the information field. Therefore, an analysis was made of 80 studies published in 2020-2022 and dedicated to the assessment and forecast of the global economic burden of COVID-19. The main inclusion criteria for the studies was the estimation of COVID-19 global burden. The search was carried out in PubMed/MEDLINE, Web of Science, Scopus, and eLibrary databases. Using a predefined data collection form, two reviewers independently extracted information characterizing the studies. Results. An analysis of the publications showed a fairly wide variety of studies in the field of the COVID-19 burden, including those determined by the difference in observation objects, analysis methods, factors taken into account, etc. Scientists actively use international (73.8%) and national (90%) databases, and surveys (57.5%). Predominantly, the estimates involve the calculation of quality-adjusted life years lost (QALY) (66.3%), 37.6% of the studies are based on the results of constructing scenario models, 28.8% consume algorithms of epidemiological SIR (susceptible, infected, or recovered) models, and 66.3% provide for cost assessment. As part of the estimated economic burden, the loss of productivity (26.3% of publications), the introduction of vaccination (32.5%), comorbidity (25%), post-COVID complications (17.5%) are considered. Conclusion. A significant interest of the world scientific community in assessing the COVID-19 global burden is observed, determined by the search for the most effective study methods. Further investigations in this area should focus on detailing within the estimated economic burden of losses associated with post-COVID-19 complications, including their various combinations, as well as on the analysis of the correlation and mutual compensation of effects from various types of treatment, with a deeper study of indirect losses. The results of this work will be also useful in conducting similar studies, including for determining their design and applying modern mathematical modeling tools. Copyright © 2022 Obstetrics, Gynecology and Reproduction. All rights reserved.
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Introduction. Treatment with MRI-guided focused ultrasound (MRgFUS) is a new, non-invasive surgical technique for treating extrapyramidal movement disorders. This article presents the first use of MRgFUS in Russia for treating patients with essential tremor (ET). Materials and methods. Patients (n = 26;17 men and 9 women) aged 21-82 years (median age 46.0 years) and with severe and refractory ET, underwent MRg- FUS thalamotomy (ExAblate 4000, Insightec). One side was treated in 22 patients (left thalamus in 18 and right thalamus in 6), both sides were treated concurrently in two patients, and both sides were treated consecutively in two patients. Tremor was assessed using the Clinical Rating Scale for Tremor (CRST). Because international clinical specialists could not visit Russia due to the COVID-19 pandemic, MRgFUS was performed via telehealth on May 5, 2020, in a world first. Results. A satisfactory result was achieved in 25 (96%) out of 26 patients. CRST scores improved by 64.7% on the side of the operation, by 10.2% on the control side, and by 37.5% overall. Intraoperative side effects included headache during sonication (42.3%), vertigo (15.4%), nausea (11.5%), vomiting (7.7%), numbness (3.8%), ataxia (3.8%), and pathological response to cold exposure (3.8%). The symptoms resolved immediately after surgery. Unstable gait was noted in five patients, which completely resolved two weeks after surgery. Median postoperative follow-up duration was 109 days [53;231], with a maximum of 625 days. No relapses (if the hyperkinesia had completely disappeared) or increased tremor (if reduced after surgery) were observed. Conclusion. The efficacy of MRgFUS for ET was 96%, with no long-term complications. Both bilateral concurrent and bilateral consecutive MRgFUS thalamotomy is possible, but its efficacy and safety should be assessed in a randomized study. In a world first, MRgFUS was successfully implemented using telehealth. © 2022, Annals of Clinical and Experimental Neurology.
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Background. The COVID-19 pandemic is associated with significant number of complications and mortality and a burden on the healthcare system. In 10–15% of hospitalized patients, the invasive and non-invasive mechanical ventilation (IMV/NIMV) is required. At the same time, it is important to stratify the risk of mechanical ventilation upon admission to the hospital. Aims — to identify clinical and laboratory risk factors for transfer to IMV and NIMV in hospitalized patients with COVID-19-associated pneumonia. Methods. A retrospective one-center nonrandomized study of 386 consecutive hospitalized patients with COVID-19-associated pneumonia was performed. The primary endpoints were IMV (n = 22) and NIMV (n = 28). Risk factors of artificial ventilation were considered for periods up to 14 and 28 days for both variants. To select a risk predictor, a univariate analysis based on Cox survival regression was performed, followed by multivariate analysis to determine risk factors at these time points. Results. After 28 days from admission the mortal exit was registered in 20 patients from 386 patients (5.2%). 22 patients (5.7%) were transferred to IMV, and 28 patients (7.3%) — to NIV, and 9 of the latter were transferred later to IMV. As a result of univariate and multivariate analyzes, the risk factors for transfer to mechanical ventilation on 14th day were: age > 65 years (OR = 5.91), a history of stroke (OR = 17.04), an increased serum level of urea (OR = 6.36), LDH (OR = 7.39), decreased sodium (OR = 12.32), GFR < 80 mL/min/1.73 m2 (OR = 13.75) and platelets (OR = 4.14);on the 28th day — age > 65 years (OR = 4.58), J-wave on the ECG (OR = 2.98), an increase of LDH (OR = 9.99) and a decrease in albumin (OR = 2.77) in serum. Predictors of the transfer of patients with COVID-19 to NIV within the period up to 14 days from the beginning of hospitalization were the age > 65 years (OR = 5.09), procalcitonin level in the blood > 0.25 ng/ml (OR = 0.19), leukocytes > 11×109 (OR = 19.64) and increased LDH (OR = 3.9). Conclusions. In patients with COVID-19, the risk factors for transfer to IMV/NIVL in the period of 14 and 28 days from the beginning of hospitalization were identified, which enable patient’s mechanical ventilation stratification and to plan respiratory support resources.
ABSTRACT
The coronavirus disease 2019 (COVID-19) affects not only the respiratory system, but also the cardiovascular system in 20-28% of cases, causing endothelial dysfunction, vasculitis, hyper-and hypocoagulation, myocarditis, endothelial dysfunction and other adverse effects. The presence of cardiovascular risk factors and diseases has been shown to worsen the disease severity and increase mortality from COVID-19. Recent studies have also found that elevations in some serum cardiovascular biomarkers can stratify the disease severity, in particular rates of hospitalizations to an internal medicine or intensive care unit, intubation, and mortality. They can be divided into markers of damage (TnT/I, creatine phosphokinase (CPK) and CPK-MB, myoglobin, NT-proBNP), coagulation (prothrombin time, fibrinogen and D-dimer), as well as prospective biomarkers for which the available evidence base is limited but there is a pathophysiological rationale (homocysteine and sST2). This review presents studies on the use of above serum biomarkers to stratify the risk of death in patients with COVID-19.
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The classic Osborn wave in the form of characteristic changes at the depolarization end or ventricular repolarization beginning is more often associated with hypothermia (body temperature below 35,60 C). Some researchers have noticed Osborn wave at normal body temperature, various pathological conditions and diseases: hypercalcemia, myocardial ischemia, postoperative pericarditis, with central nervous system, etc. We presented a case report of a 72-year-old female inpatient with moderate COVID-19, confirmed by polymerase chain reaction, and 48% lung damage. Before admission to the hospital, electrocardiogram had no Osborn wave, which first appeared at admission. There was a significant increase in serum C-reactive protein and a moderate increase in serum biomarkers and no changes in intervals and segments on the electrocardiogram. The appearance of Osborn wave may be associated with intramyocardial electrolyte imbalance, a consequence of antiviral and antibacterial therapy that violate intraventricular conduction. © 2021, Silicea-Poligraf. All rights reserved.
ABSTRACT
We present a case report of a patient with a previously identified cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy (CADASIL), who was admitted due to coronavirus disease 2019 (COVID-19), confirmed by polymerase chain reaction and computed tomography. Examination and treatment of these patients presents certain difficulties due to the large number of thromboembolic complications caused by a combination of congenital and infectious angiopathies. CADASIL syndrome and COVID-19 were manifested by the progression of neurological symptoms and increasing cognitive impairment. During therapy, there was a positive change with a gradual regression of these disorders. Представлен клинический пример пациентки с выявленной ранее доминантной артериопатией с субкортикальными инфарктами и лейкоэнцефалопатией (CADASIL - cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy), поступившей в клинику с новой коронавирусной инфекцией (COVID-19), подтвержденной данными ПЦР и компьютерной томографии. Обследование и терапевтическое лечение этих пациентов представляет определенные трудности в связи с большим числом тромбоэмболических осложнений, обусловленных сочетанием врожденной и инфекционно-обусловленной ангиопатий. CADASIL-синдром и новая коронавирусная инфекция, вызванная вирусом SARS-CoV-2, проявлялись прогрессией неврологической симптоматики и нарастающими когнитивными нарушениями. На фоне терапии отмечалась положительная динамика в виде постепенного регресса данных нарушений.
ABSTRACT
The COVID-19 pandemic has had a huge impact on the health of millions of people around the world on an unprecedented scale. Unfortunately, the process of creating effective antiviral drugs and vaccines is being delayed. Therefore, drugs that are already available and may have an effect on COVID-19 are being investigated. Due to the fact that viral infection often affects the cardiovascular system, causing myocardial infarction, viral myocarditis, tachyarrhythmias and stress cardiomyopathies, a theory was put forward that HMG-CoA reductase (3-hydroxy-3-methyl-glutaryl-CoA reductase) inhibitors (statins) can reduce the risk of cardiovascular complications in these patients. In recent years, this class of drugs has been proposed, including for viral infections, such as the influenza virus or MERS-CoV. The review discusses both the latest clinical data on the efficacy of statins in COVID-19 and the pleotropic mechanisms of statins that can limit the pathogenic effect of viruses. In particular, statins can act on lipid cell rafts (subdomains of the plasma membrane), decreasing their lipid concentration;limiting the interaction of the virus with the receptors of angiotensin-converting enzyme-2 and CD-147. Statins have an anti-inflammatory effect (blocking the molecular mechanisms of inflammation, including NF-?B and NLRP3), limit the development of a "cytokine storm" in severe patients with COVID-19;can inhibit SARS-CoV-2 basic protease;influence coagulation, limit sympathetic activity and have other effects. In two large cohort observational studies (n = 96032 and n = 13981), hospitalized patients with COVID-19 who were taking statins showed a decrease in hospital mortality and mortality 28 days after the admission to the hospital. Thus, statins can play a role in the treatment of COVID-19. © 2020 All-Russian Public Organization Antihypertensive League. All rights reserved.
ABSTRACT
The new coronavirus infection (COVID-19) is a serious threat to humanity. Although its pathogenesis has not been fully studied, angiotensin-converting enzyme 2 (ACE 2) has recently been identified as a receptor for entry into the cell of the coronavirus SARS-CoV-2, thereby contributing to the spread of infection in the body. The goal of the review was to study the significance of the renin-angiotensin-aldosterone system (RAAS) in the pathogenesis of the action of the coronavirus SARS-CoV-2, the function and regulation of ACE 2, and the effects of RAAS inhibitors in cardiovascular diseases. ACE 2 promotes the transformation of angiotensin (AT) I into AT 1-7, which have a number of beneficial effects on the state of endothelium and cardiomyocytes (vasodilation, inhibition of cell growth, inhibition of cell proliferation and inhibition of cardiomyocyte hypertrophy). SARS-CoV-2 virus, in addition to interaction with ACE 2 on the surface cells in the lungs and vascular wall, leads to dysregulation of ACE 2, which in turn leads to a shift in the balance of RAAS towards activation of ACE 1 receptors, which have the opposite effects. ACE inhibitors and angiotensin receptor blockers (ARBs) play a key role in the treatment of major cardiovascular diseases such as hypertension and chronic heart failure, and today there is no evidence that ACE inhibitors or ARBs worsen severity of cardiovascular diseases. Therefore, it is not recommended to discontinue these drugs in patients with stable cardiovascular diseases and afflicted by COVID-19. The human recombinant hrACE 2 protein may be a potential therapy for CVI by blocking virus entry and eliminating the imbalance in RAAS. Copyright © 2020 All-Russian Public Organization Antihypertensive League. All rights reserved.
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A new coronavirus infection (CVI) is a challenge to the medical system of the Russian Federation and requires precise flow forecasting to take the necessary measures on time. The article provides an overview of modern mathematical tools for predicting the course of CVI in the world. The created CVI forecasting project office allowed to determine the most effective analysis tools in the Russian Federation - the ARIMA, SIRD and Holt-Winters exponential smoothing models. Implementation of these models allows for prediction of short-term morbidity, mortality and survival of patients with an accuracy of 99 % both in the Russian Federation in general and in the regions. In addition, the distribution of CVI was characterized. Particularly, Moscow and Moscow region have the maximum spread of infection, and other regions are lagging behind in the dynamics of the incidence by 1-3 weeks. The obtained models allow us to predict the course of the disease in the regions successfully and take the necessary measures in a timely manner. Copyright © 2020 All-Russian Public Organization Antihypertensive League. All rights reserved.