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Aim. Supraventricular arrhythmias (SVA) are associated with high morbidity and mortality. However, little attention is paid to this condition in patients undergoing hemodialysis. The aim of this study was to analyze the long-term relationship of intradialytic SVA, including asymptomatic arrhythmias, with adverse events in a cohort of patients undergoing hemodialysis.Material and methods. An observational prospective study was conducted in a group of patients on hemodialysis with a 10-year follow-up. The study involved 77 patients (42 men and 35 women; mean age 58±15 years) with sinus rhythm, then they were monitored for ECG for six consecutive hemodialysis sessions during recruitment.Results. Arterial hypertension was present in 68.8% of patients, diabetes mellitus in 29.9% of patients. SVA were reported in 38 patients (49.3%); they all had a short-term, asymptomatic character and were terminated independently. Age (hazard ratio [HR] 1.04 per year; 95% confidence interval [CI] 1.00-1.08) and an increase of the atrium (HR 4.29; 95%CI 1.30-14.09) were associated with supraventricular arrhythmia in multidimensional analysis. During an average follow-up of 40 months, 57 patients died, and cardiovascular diseases were the main cause of death (52.6%). Variables associated with all-cause mortality in the Cox model were age (HR 1.04 per year; 95%CI 1.00-1.08), C-reactive protein (HR 1.04 per 1 mg/l; 95%CI 1.00-1.08) and supraventricular arrhythmias (HR 3.21; 95%CI 1.29-7.96). Patients with supraventricular arrhythmias also had a higher risk of nonfatal cardiovascular events (HR 4.32; 95%CI 2.11-8.83) and symptomatic atrial fibrillation during observation (HR 17.19; 95%CI 2.03-145.15).Conclusions. Strong relationships have been established between the presence of supraventricular arrhythmias recorded during ECG during dialysis and symptomatic AF developing in the future. Patients with supraventricular arrhythmias had a larger right atrium. Age and supraventricular arrhythmias are the main variables associated with mortality in dialysis patients.

Introduction. The article substantiates the idea of a psychological and pedagogical understanding of the reform and development of higher education, and departure from the Bologna Process. The international project «Fundamental University Education» put forward by Russia is revealed.Purpose setting. Understanding the logic and methodology of education as a social institution that performs the function of including an individual in the culture of a given society and introducing him to it, allows us to comprehend and get closer to understanding training and education as a process of transforming external knowledge into internal, spiritual, forming and shaping a person.Methods and methodology of the study. In accordance with the objectives of the study, the following general scientific methods were used: theoretical analysis of the literature, longitudinal and cross-sectional experimental research, verification, modeling, and qualitative analysis of the reforming.Results. In Russia the educational space is formed under the influence of processes associated with the development of information transformations in all spheres of life. Therefore, informatization becomes one of the factors causing significant changes in social institutions, in particular in the educational system. In the framework of higher education in personnel training, priority should be given to the creation of the foundation of the system and structure of education, the priority of which is methodologically important long-lived and invariant knowledge that contributes to a holistic perception of the scientific picture of the world, the intellectual flourishing of the individual and its adaptation to rapidly changing conditions.Conclusion. In the development of the Russian society, the strategy of civilizational development is changing, there is a search for new values. We believed and continue to believe that it is inappropriate to abandon the Russian levels of training of professional personnel. The absence of the most important stage, the training of specialists, has caused significant harm to our youth in finding employment, because graduates of bachelor’s and master’s degree do not have a specialty, but only higher education in a certain area, which does not make it possible to professionally perform work. The departure from the Bologna System will allow us to return to the best Russian traditions aimed at the development of all levels of education.

Relevance. Supraventricular arrhythmias are frequent comorbid conditions in patients with end-stage renal failure undergoing dialysis. The prevalence of atrial fibrillation (AF) in this group of patients is higher than in the general population and is associated with increased mortality. Aim. To analyze the effect of a dialysis session on echocardiographic parameters and to assess their relationship with the occurrence of supraventricular arrhythmias and AF during hemodialysis. Material and methods. The study included 78 patients on hemodialysis. All patients underwent Holter electrocardiography monitoring, taking into account the heart rate before and after dialysis, the number and duration of AF episodes associated with the dialysis session. Using echocardiography, which was performed before and after the dialysis procedure, all patients were also evaluated for the presence of left ventricular (LV) hypertrophy, impaired systolic and diastolic function, as well as LV myocardial mass, sizes of the left atrium, its volume, volume of the right atrium and LV ejection fraction. Results. An analysis of the differences in echocardiographic parameters before and after dialysis showed a significantly larger volume of the left atrium, the volume of the right atrium, the width of the inferior vena cava, and the parameter P(early transmitral velocity) before dialysis compared with the state after dialysis. Also, AF paroxysms were recorded much more frequently after dialysis. The volume of the left atrium 32 mm and the right atrium 30 mm (limit values) were observed much more often in patients before dialysis. A relationship was found between an increased number of paroxysms of atrial fibrillation and a decrease in the volume of the right atrium 5 mm and the left atrium 7 mm after dialysis. No correlation was found between the mass of the LV and the volume of the left atrium. Conclusions. 1. The age and duration of dialysis therapy in hemodialysis patients are associated with an increased risk of atrial fibrillation. 2. A decrease in the volumes of the right and left atriums after the hemodialysis procedure has a positive correlation with paroxysmal AF. 3. The hemodialysis procedure leads to a decrease in the volumes of the right and left atriums, as well as the width of the inferior vena cava and a decrease in the speed of movement of the mitral valve in early diastole. 4. No relationship was found between the volume of the left atrium and the mass of the LV myocardium in patients on hemodialysis.

Aim. To evaluate the prevalence of arrhythmias in patients undergoing chronic hemodialysis, to characterize the arrhythmia types in relation to the dialysis procedure and to determine their relationship with clinical findings and echocardiographic characteristics.Material and methods. The study involved 152 patients with kidney failure undergoing chronic hemodialysis. All patients underwent an assessment of dialysis parameters, collection of clinical data, and 48-hour Holter monitoring. In addition, 93 patients underwent an echocardiography with an assessment of left ventricular (LV) mass index, LV ejection fraction, left atrial (LA) volume index, E/e’, cardiac output and preload, which was defined as increased LV filling pressure (E/e’ >12) and LA enlargement (LA volume index >30 ml/m2).Results. Among the 152 examined patients, premature supraventricular and ventricular contractions (PVCs) were observed in almost all patients, while 41% had paroxysmal supraventricular tachycardia. Clinically significant arrhythmias included persistent atrial fibrillation (AF) in 8,6% of patients, paroxysmal AF in 3,9%, nonsustained ventricular tachycardia in 19,7%, bradycardia in 4,6%, second-degree atrioventricular block in 1,3% and third-degree atrioventricular block among 2,6%. PVCs were more common on dialysis days, while tachyarrhythmias were more common during dialysis and in the immediate post- dialysis period. Older age (odds ratio (OR) 10 years older, 1,53; 95% confidence interval (CI): 1,15-2,03; P=0,003), lower cardiac output (OR 1 L/min more, 0,66; 95% CI: 0,44-1,00; P=0,05) were independently associated with clinically relevant arrhythmias.Conclusion. In patients on chronic hemodialysis, older age, increased preload and lower cardiac output are independently associated with clinically relevant arrhythmias. In addition, a positive association between increased LV mass index and AF episodes has been demonstrated. Lower cardiac output had positive correlation with AF and ventricular arrhythmias.