Vol 10, No 4 (2019)

Aim. To assess the influence of concomitant chronic obstructive pulmonary disease (COPD) on the frequency of repeat myocardial revascularization in patients with coronary artery disease (CAD) after percutaneous coronary interventions (PCI), as well as to determine independent predictors of repeat revascularization in patients with concominant COPD. Materials and methods. A prospective cohort study included 646 patients with CAD, of which 254 had concominant COPD. All patients underwent PCI (46.9% for acute coronary syndrome in the main group and 44.9% in the control group. Remaining interventions were elective). The frequency of repeat myocardial revascularization and the time till re-intervention was registered during the follow-up period up to 36 months. Results. COPD increases risk of repeat myocardial revascularization (hazard ratio - HR 1.46; 95% confidence interval - CI 1.03-2.06), repeat PCI (HR 1.62; 95% CI 1.03-2.32) and is accompanied by an earlier onset of re-intervention. An independent predictors of repeat myocardial revascularization in the Cox regression model are: glomerular filtration rate (p=0.001), ankle-brachial index (p=0.004), frequent exacerbations of COPD (p=0.028), total number of coronary artery stenosis (p=0.039) and blood concentration of C-reactive protein (p=0.066). Conclusions. COPD is a significant risk factor of re-intervention after PCI in patients with acute and chronic forms of CAD and leads to its earlier performing. The patients with frequent COPD exacerbations have the highest risk of repeat myocardial revascularization during follow-up.

Aim. To assess the quality of life (QOL) in patients with left ventricular reconstructions with an ejection fraction of less than 30%and left ventricle (LV) aneurysm of type 2 and 3 according to L. Menicanti. Materials and methods. The retrospective one-center study included 72 patients with left and right ventricular aneurysms of the second and third types according to the classification of L. Menicanti and an extremely reduced ejection fraction (less than 30%). The observation period was up to 33 months. The study included 61 (84%) men and 11 (16%) women, whose average age at the time of surgery was 58.2±9.2 years. All patients underwent LV reconstruction under CPB. Patients independently filled in the questionnaire before surgery. Repeated questionnaires were conducted no earlier than a year after the operation, in order to exc-lude the influence of possible complications associated with surgical access on the physical and mental health components. QOL was assessed using a standard SF-36 questionnaire. Results. According to the analysis, it was found that during the observation period of up to 33 months in patients, the "physical functioning" parameter is significantly lower than the initial value ( p =0.001). Also at a fairly high level the value of the indicator "body pain" is maintained, which is higher than the initial value ( p =0.001). According to other indicators, in patients with a low ejection fraction after reconstruction of the LV, an improvement in the QOL parameters was revealed. The mental and physical health of patients after reconstruction of the LV is significantly higher than the values before surgery. Results. Reconstruction of the LV in patients with LV aneurysm of type 2 and 3 according to L. Menicanti significantly improves the QOL of patients in such parameters as role-playing activity, general health, vitality, social functioning, emotional condition and mental health. A decrease in the indexed value of stroke volume of less than 23% is a predictor of a decrease in both physical and mental components of health.

Aim. To study the association of single nucleotide polymorphism (SNP) rs556621 (G>T) with the development of stroke in patients of the East Siberian population with cardiovascular pathology and risk factors. Material and methods. The study involved 260 patients with stroke (157 men and 103 women) and 272 patients of the control group (170 men and 102 women). The following cardiovascular pathology and risk factors were present in the patients of the main group: arterial hypertension, paroxysmal supraventricular tachycardias, dyslipidemia, atherosclerosis of the brachiocephalic arteries, disorders of the hemostatic system. All patients underwent clinical, instrumental and molecular genetic examination. Statistical processing of the material was carried out using the set of application programs Statistica for Windows 7.0, Excel and SPSS 22. Results. As a result of the study, no statistically significant associations of genotypes and alleles of the rs1800801 polymorphism (C>T) with stroke were found in any of the analyzed groups and subgroups. Conclusion. SNP rs1800801 (C>T) does not have a significant effect on the development of stroke in people of the East Siberian population, regardless of the preceding cardiovascular pathology and risk factors.

Aim. To study the influence of type of behavioral activity on the development of cardiovascular diseases, to evaluate the effect of type of behavior on the frequency of repeated hospitalizations and fatal outcomes after acute coronary syndrome. Materials and methods. The study included 100 patients with acute coronary syndrome who were subsequently divided into groups according to the main disease - acute myocardial infarction and unstable angina. The median age was 62.09±5.46 years, the therapy according to the underlying disease. All patients had anamnesis of previous and concomitant diseases, anthropometric measurements, physical examination, and observation during the next 24 months after inclusion in the study. In dynamics he carried out daily monitoring of electrocardiogramm, daily monitoring of blood pressure, echocardiography. Diagnosis of types of behavioral activity was carried out using the test method "type of behavioral activity" developed on the basis of the questionnaire Jenkins Activity Survey, published in 1974 by C. Jenkins, the Russian-language adaptation was performed in NIPNI Bekhtereva (L.I. Wasserman, N.V. Gumenyuk). Results. In patients with behavioral activity type A more frequent occurrence of diseases such as angina, hypertension, acute myocardial infarction, acute violation of cerebral circulation, type 2 diabetes than in persons with behavior type AB and B. Repeated hospitalizations for unstable blood pressure and unstable angina on the background of standard therapy in patients with type a behavior occur more often than in patients with type AB and B.

Background. The topic relevance is determined by the increasing number of children with congenital heart defect (CHD) who require surgical correction at an early age. For further follow-up it is necessary to determine a functional status of the cardiovascular system (CVS), its adaptation to new conditions of hemodynamics, that is especially important in childhood during the period of morphological and functional changes in the growing organism. Aim. To assess the functional status of the CVS in children with CHD using a test with dosed exercise load (EL) to determine the need for an individual approach to physical rehabilitation.Materials and methods. The study included 80 children, who have been surgically treated for CHD by the age of 1 year. The study population included 32 (40.0%) boys and 48 (60.0%) girls; an average age of patients was 33.5 ± 4.28 months. The control group included 50 conditionally healthy children, with an average age of 35.0 ± 4.1 months; of which 23 (46%) were boys and 27 (54%) were girls. To assess the functional status of the CVS, a test with dosed EL was performed (10 squats in 20 s). Blood pressure and heart rate were measured at rest and after exercise, the double product and the quality of response index were calculated. Results. In children with CHD 2 years after surgery, resting blood pressure was lower compared with healthy children, no significant differences in heart rate between groups were found. The double product in children of the main group was close to above average value. Analysis of hemodynamic changes due to EL showed a more pronounced increase in heart rate and less pronounced increase in pulse pressure and stroke volume in children with CHD after correction, which indicates the adaptation of CVS to EL due to an increase in the rate rather than the strength of heart contractions. The quality of response index in the group of children with CHD corresponded to an irrational reaction to EL. Analysis of CVS responses to the load showed that the most prevalent type was asymptaticotonic one (when there is an increase in heart rate and almost no changes in blood pressure). In the hypertensive type (revealed in a small number of children), there is a significant increase in both heart rate and systolic and diastolic blood pressure. The time of hemodynamics backing up to the baseline parameters did not exceed 5 minutes in both groups, no child complained during the test. Conclusions. In young children who had surgical correction for septal CHD in infancy, blood pressure is characterized by low parameters, that is associated with a possible alteration in the regulation of vascular tone. The predominant type of the CVS response to EL in young children with septal CHD which was corrected in infancy is the asympathicotonic one with a normal period of restoration of hemodynamics to the baseline parameters. The test with EL allows us to individualize the program of physical rehabilitation of young children who had surgery for septal CHD in infancy, taking into account the status of CVS and the initial fitness