Aim. The high prevalence of obesity in a cohort of patients with heart failure and mildly reduced ejection fraction (HFmrEF) determines the relevance of clarifying the role of biomarkers and autonomic imbalance in myocardial remodeling, taking into account metabolic risk factors.Material and methods. We examined 19 men with postinfarction cardiosclerosis and class II HFmrEF (median age 62 years), overweight/class I-II obesity, type 2 diabetes in 53/47%, 48% of cases, respectively, who received therapy. The biomarker panel included N-terminal pro-brain natriuretic peptide (NT-proBNP), galectin-3, pro-collagen I C-terminal propeptide (PICP), N-terminal propeptide of procollagen type III (PIIINP), C-terminal telopeptide of type I collagen, matrix metalloproteinase-9 (MMP-9), tissue inhibitor of matrix proteinase-1 (TIMP-1), leptin and adiponectin. Heart rate variability (HRV) and turbulence were obtained using 24-hour Holter monitoring. We assessed the time and frequency domains of HRV (24 h) and 5 min recordings of wakefulness at rest, calculated TO (turbulence onset) and TS (turbulence slope).Results. Significant positive associations of leptin and TIMP-1 levels with left ventricular hypertrophy markers were confirmed. Positive correlations of peak e' with following HRV indicators were revealed: SDNN (r=0,68; p=0,02) and RMSSD (r=0,69; p=0,003). Lower TS values were associated with higher index parameters of left ventricular mass (p<0,05 for all). Associations of biomarkers with autonomic nervous system (ANS) were observed: MMP-9 with RMSSD (r=0,54) and pNN50 (r=0,51); TIMP-1 with TO (r=0,46); PICP/PIIINP ratio with HFn (5 min) (r=-0,49); NT-proBNP/adiponectin ratio with SDNN (r=-0,49); leptin level with TS (r=-0,54) (p<0,05 for all).Conclusion. In patients with HFmrEF of ischemic origin and additional metabolic risks, serum biomarkers of fibrosis, adipokines, and ANS parameters are associated mainly with markers of increased left ventricular filling pressure. The study results predetermine the further search for potential risk-stratification markers of unfavorable myocardial remodeling and prognosis in large samples of patients with metabolic deviations and HF with EF >40% against the background of modern drug therapy.

Background. The choice of an antiarrhythmic drug, proof of its effectiveness and safety in a short period of time in patients with non-coronary ventricular arrhythmia are the most pressing problems of practical arrhythmology. Objective. To resolve the issue of choosing an antiarrhythmic drug in patients with a mixed nature of ventricular arrhythmia, several ectopic foci, and to optimize further tactics for their management. Design and methods. Of 167 patients with ventricular arrhythmia distribution during periods of wakefulness who performed a stress test, 32 individuals with non-coronary arrhythmias of a mixed nature (by the participation of the autonomic nervous system) were selected. All patients underwent an acute pharmacological stress test with a beta-blocker. Antiarrhythmic therapy was selected under the control of multi-day ECG telemonitoring. Results. In the pretest of exercise tests, single ventricular parasystole was recorded in all 32 patients. In 3 patients, the arrhythmia persisted throughout the entire load, in 4 patients it progressed, in 25 patients the parasystole of the initial morphology disappeared, and at the peak of the load/early recovery period, arrhythmia of a different morphology appeared. Indications for drug treatment were determined for all patients with the choice of the drug after acute pharmacological tests. Then, therapy with two antiarrhythmic drugs was initiated using multi-day ECG telemonitoring, the purpose of which was to control the efficacy, safety, choice of doses and time of drug administration. On days 5–6, combination therapy was effective in 25 patients (78 %). Conclusion. With the help of stress tests, it is possible to accelerate not only the search for the cause of ventricular arrhythmia, but also the choice of a personalized method of treatment. Supplementing the examination with pharmacological tests allows predicting the result of combined antiarrhythmic therapy with a beta-blocker and a class IС drug with an anticholinergic effect.

Background. The use of antiarrhythmic (AA) drugs requires constant monitoring due to the risk of arrhythmic and side effects. It is impossible to quickly identify and respond to emerging adverse events using 24-hour monitoring of the electrocardiogram (ECG), due to the method technical features. The introduction into practice of multi-day telemonitoring (MTM) of ECG contributes to an increase in the detection of rare and asymptomatic arrhythmias, and improves control over the AA therapy effectiveness. Objective. To study the possibilities and advantages of MTM in the selection of AA therapy and the prevention of its complications in patients with ventricular arrhythmias (VA). Design and methods. The study included 73 patients with frequent symptomatic high-grade VA (44 women and 29 men) aged 28 to 86 years (56.6 ± 28.3 years), in whom MTM ECG was performed for the purpose of individual selection of AA therapy. Results. In 19 % patients using MTM, the psychogenic nature of VA and a necessity to avoid prescribing was suspected. In 63 % patients with VA the optimal AA therapy in the minimum effective doses was selected using MTM, in 18 % patients the futility of drug therapy was proven and radiofrequency ablation was recommended. Conclusion. MTM ECG is justified for the selecting AA therapy in patients with VA. MTM has undoubted advantages over daily monitoring and helps to reduce the time for AA agent choosing.

The pathogenetic mechanisms of arrhythmias, including high-grade ventricular arrhythmias (including non-sustained ventricular tachycardia), in patients with coronary heart disease may be different. Therefore, the characteristics of ventricular arrhythmias must be considered based on the totality of data, taking into account all the available features. The importance of a personalized approach to the management of a patient with coronary heart disease who had extensive myocardial infarction 18.5 years ago, followed by mammary coronary artery bypass grafting, aneurysmectomy and the de-velopment of heart failure with a low ejection fraction, in whom ventricular arrhythmias occurred against the background of a stable course of coronary disease , but after emotional stress, is reflected in this work. An extended examination, as well as a detailed study of the nature of ventricular arrhythmias, made it possible to determine the main provoking factor and select an individualized pathogenetic treatment with a good antiarrhythmic result that persists for several years of observation. Conducting mental tests and psychological questioning can be recommended for patients with coronary heart disease and chronic heart failure as an additional examination to assess the contribution of the psycho-emotional factor to arrhythmogenesis after excluding the ischemic and sympathetic nature of ventricular ectopia. It is incorrect to consider that all ventricular arrhythmias in patients with coronary heart disease are ischemic in nature, and in some clinical situations this statement is even erroneous.

Aim. To evaluate the relationship between the clinical decision support system use (CDSS) and adherence to clinical guidelines.Materials and methods. Medical records of 300 patients with atrial fibrillation and hypertension from the electronic medical database of the Almazov National Medical Research Center were analyzed. Demographic and clinical data, as well as information on anticoagulant, antiarrhythmic and antihypertensive prescriptions were analyzed. The primary endpoint was adherence of prescribed treatment to current clinical guidelines for each of the three therapies. Firstly, a group of independent clinical experts assessed primary endpoint for retrospective prescriptions. Secondly, new prescriptions were simulated by another group of clinical experts using CDSS and blinded to previous therapy. Primary endpoint at the second step was analysed by independent experts. We compared adherence to relevant clinical guidelines with and without use of CDSS. Additionally, we analyzed predictors of failing to meet the current recommendations in the retrospective records.Results. Out of 300 patients, only 291 (97%) had all characteristics and were included in the analysis. In 26 patients (18%), all three treatment strategies were in accordance with current clinical guidelines. Anticoagulant therapy was adherent to the guidelines in 92% of cases. Experts who used CDSS were 15% (95% confidence interval [CI], 10-21%) more likely to prescribe novel oral anticoagulants and 14% (95% CI, 10-19%) less likely to prescribe warfarin compared to baseline. Antiarrhythmic therapy was adherent to the guidelines in 69% of cases. When the CDSS platform was applied, experts were 14% (95% CI 4-19%) more likely to prefer antiarrhythmic drug (AAD) monotherapy and 32% (95% CI 26-37%) more often prescribed radiofrequency ablation (RFA) of left atrium. At baseline, antihypertensive therapy combinations were adherent clinical guidelines in 28% of cases. The use of the CDSS platform by experts was significantly associated with an increase in the frequency of prescribing dual and triple antihypertensive therapy.Conclusion. CDSS use is associated with improved adherence to current clinical guidelines. Prospective randomized trials are needed to evaluate the CDSS effectiveness in the prevention of cardiovascular events.

The ongoing pandemic caused by virus SARS-CoV-2 encourages the search for ways to save the population. Since people first encountered this disease, it is being actively studied, and updating medical information is extremely valuable. Since people first encountered this disease, it is being actively studied, and updating medical information is extremely valuable. The purpose of this review is to systematize the literature on the effect of SARS-CoV-2 on the cardiovascular system, focusing on changes in the surface electrocardiogram depending on the clinical course of the disease, the characteristics of the treatment and outcomes, and the possible identification of electrocardiographic predictors of complications, as well as sudden cardiac death in patients with non-coronarogenic syndromes with new virus infection (COVID-19).

The review presents an analysis of literature data on the use of exercise stress tests in patients with disorders of heart rhythm and conduction, such as sinus node dysfunction, atrioventricular blockade, WPW-phenomenon, atrial fi brillation, canalopathy. The value of clinical and electrocardiographic parameters registered during the exercise stress tests for verifi cation of the diagnosis and determination of the patient management tactics is shown. Clinical examples from own practice are given.

КАРДИОЛОГИЧЕСКИЙ ВЕСТНИК, 1, 2019 www.cardioweb.ru Согласно данным литературы, существуют три основных направления при ведении пациентов с желудочковыми нарушениями ритма: «политика невмешательства», или наблюдательная тактика, медикаментозная терапия и радиочастотная абляция (РЧА). При этом в последнее время инвазивное лечение желудочковых аритмий (ЖА) зачастую считается предпочтительным [1—3]. В основном это связано с усовершенствованием техники абляций аритмогенных очагов, а также накопленным опытом аритмологов, позволившим упростить хирургические операции, сделать их доступнее. Кроме того, все большее предпочтение хирургических процедур можно объяснить ограниченным числом существующих эффективных и безопасных антиаритмических препаратов (ААП), укоренившимся мнением об их недолгосрочном эффекте. Хотя РЧА стала доминировать над другими антиаритмическими (АА) методами лечения ЖА, обсуждается и целый ряд недостатков инвазивных воздействий. Это прежде всего труднодоступность некоторых очагов эктопии, возможные осложнения процедуры, отсутствие современного оборудования и необхо© Коллектив авторов, 2019 https://doi.org/10.17116/Cardiobulletin20191401146