LECTURES
Hypertension is one of the key risk factors for cardiovascular morbidity and mortality. Metabolic syndrome (synonyms: syndrome X, insulin resistance syndrome) is characterized by increased visceral fat mass, decreased sensitivity of peripheral tissues to insulin (insulin resistance) and hyperinsulinemia, which cause disorders of carbohydrate, lipid, and purine metabolism. Hypertension is an integral component of the metabolic syndrome. The severity of hypertension in patients with metabolic syndrome is higher in comparison with patients without metabolic disorders. In patients with metabolic syndrome, the probability of cardiac and brain damage increases fivefold, kidney damage threefold, and the vessels twofold. The presence of diabetes reduces the likelihood of achieving effective control of blood pressure by 1.4 times, hypercholesterolemia — by 1.5 times, obesity — by 1.7 times. In the presence of any three factors, the effectiveness of treatment is reduced twofold. In this article, approaches to the management of patients with hypertension and metabolic syndrome, aspects of non-drug therapy, target blood pressure levels, and the choice of drugs are presented in accordance with evidence-based medicine and current recommendations.
REVIEW ARTICLE
The presented review concerns contemporary views on specific aspects of anticoagulant and thrombolytic treatment of venous thromboembolism and mostly of acute pulmonary embolism. Modern classifications of patients with acute pulmonary embolism, based on early mortality risk and severity of thromboembolic event, are reproduced. The importance of multidisciplinary approach to the management of patients with pulmonary embolism with the assistance of cardiologist, intensive care specialist, pulmonologist, thoracic and cardiovascular surgeon, aimed at the management of pulmonary embolism at all stages: from clinical suspicion to the selection and performing of any medical intervention, is emphasized. Anticoagulant treatment with the demonstration of results of major trials, devoted to efficacy and safety evaluation of anticoagulants, is highlighted in details. Moreover, characteristics, basic dosage and dosage scheme of direct (new) oral anticoagulants, including apixaban, rivaroxaban, dabigatran, edoxaban and betrixaban are described in the article. In particular, the management of patients with bleeding complications of anticoagulant treatment and its application in cancer patients, who often have venous thromboembolism, is described. Additionally, modern approaches to systemic thrombolysis with intravenous streptokinase, urokinase and tissue plasminogen activators are presented in this review. The indications, contraindications, results of clinical trials devoted to various regimens of thrombolytic therapy, including treatment of pulmonary embolism by lower doses of fibrinolytic agents, are described.
ORIGINAL ARTICLES
Background: In the Russian Federation, newborn screening comprises thyroid stimulating hormone determination to exclude primary congenital hypothyroidism. Screening is carried out throughout Russia. Neonatal TSH can be used to assess iodine deficiency and monitor iodine prevention programs.
Objective: To assess and compare official statistical data on congenital hypothyroidism, the prevalence of hypothyroidism and iodine deficiency syndrome in children, as well as urinary iodine in the Russian regions.
Materials and methods: The level of neonatal TSH was determined in 97.69% of children born in the Russian Federation in 2017. This article represents the results on the prevalence of hypothyroidism in the regions with various iodine availability. The correlation analysis was used to assess the relationship of CH incidence in newborns and iodine availability.
Results: The calculated correlation coefficient, which was 0.2, reflects a weak relationship between the degree of iodine deficiency in the region and the number of newborns diagnosed with congenital hypothyroidism.
Conclusions: In the Russian Federation, a law on universal salt iodization does not exist, and many regions are still in conditions of moderate or severe iodine deficiency. To assess the iodine status in these particular regions, we could use the results of newborn TSH screening
Study objective. To assess the association between intracardiac hemodynamics and airway obstruction with pulmonary hyperinflation in patients with chronic obstructive pulmonary disease.
Materials and methods. Ninety-six patients with chronic obstructive pulmonary disease, aged 40 to 75 years, without concomitant cardiovascular disease, were examined and divided into 4 groups according to the severity of the disease. The patients underwent general clinical examination, spirometry, 24-hour pulse oximetry and echocardiography with assessment of linear and volumetric parameters, as well as diastolic function of left and right ventricles.
Results. Linear and volumetric parameters of the left ventricle, LV myocardial mass and geometry in the examined patients with chronic obstructive pulmonary disease matched threshold values. The progression of the severity of chronic obstructive pulmonary disease was accompanied by decrease of the end-diastolic size of the left ventricle, ratio of peak early to late diastolic filling velocity for the left ventricle (E/A) without significant changes in the left ventricle isovolumetric relaxation time (IVRT). Moderate correlations of the inspiratory capacity with the end-diastolic size of the left ventricle (r=0.612; p=0.001) and the left ventricle E/A (r=0.464; p=0.001); forced expiratory volume in 1 second (FEV1) with the left ventricle E/A (r=0.600; p=0.011) were established. As a result of the logistic regression performed, the predictor value of the inspiratory capacity was confirmed (Wald χ2 — 5.795; р=0.024). Impairment of left ventricular diastolic function of grade I was revealed in 12 (31.6 %) patients in group 2, in 7 (24.1 %) patients in group 3, and in 9 (56.2 %) patients in group 4.
Conclusion. Airway obstruction severity and pulmonary hyperinflation progression in patients with chronic obstructive pulmonary disease and without concomitant cardiovascular disease is associated with a decrease of left ventricular size and diastolic filling, contributes to the development of the left ventricular diastolic dysfunction, predominantly due to the decrease in filling velocity parameters.
Objective: to evaluate the innovative organizational, medical and pharmacoepidemiological approaches for the prevention of circulatory system diseases in pre-primary care using mobile health technologies.
Materials and methods: 3,694 people went through preventive consultation (questionnaires, anthropometry, body fat and blood pressure evaluation, electrocardiography, glucose and blood cholesterol) at equipped medical sites in shopping centers and rural health posts.
Results. Among the surveyed, there were both healthy people and patients cardiovascular diseases and diabetes mellitus. Behavioral (insufficient consumption of fruits and vegetables, adding more salt without trying food, physical inactivity, smoking and alcohol abuse) and nutritional (obesity, hypertension, hypercholesterolemia and glycaemia) risk factors of chronic noncommunicable diseases were detected that contribute to high mortality from circulatory system diseases in the Tver region. This is associated with low adherence to drug therapy and its lack of efficacy in patients with hypertension, ischemic heart disease and cerebrovascular diseases.
Conclusion: to assess the effectiveness of CSD prevention in pre-primary care, it is possible to use mobile medical sites in shopping centers and rural health posts.
Objective. The objective of our study was to compare the performance of vascular stiffness (VS) and the left ventricular (LV) remodeling process indicators in patients with arterial hypertension (AH) under renal replacement therapy (RRT), and patients with essential hypertension.
Design and methods. 158 people were included in the study, divided into 4 comparable age groups: 32 patients receiving programmed hemodialysis (PH), 37 recipients of renal transplant (RT), 69 patients with essential AH and 20 healthy volunteers. All the patients underwent 24-hour blood pressure (BP) monitoring with an assessment of VS and central BP (SBPao) and echocardiography (EchoCG).
Results. The patients under PH and after RT did not have any significant differences in the values of central and peripheral BP. Comparing the groups of patients under RRT with the group of essential AH, the office systolic (SBP) and diastolic (DBP) BP values did not differ significantly. Аlthough, at night, considerably higher DBP(n) and SBPao(n) values were detected in patients under RRT, and in the patients after RT SBP(n) and PP(n) values were also increased. An increase in the SBPao values of more than 10 m/sec was detected only in the groups of patients under RRT. In all the groups with hypertension all indicators of daily VS differed significantly from the group of healthy volunteers. PTIN (Pulse Time Index of Norm) in the studied groups had more evident differences: in the healthy volunteers it was in the range of 80-90%, in the patients with essential hypertension — 50-60%, and in the patients under PH and after RT — 20-40%. In all groups of patients with AH, the average the posterior wall thickness (PWT) of the LV and the interventricular septum thickness (IVST) were close to the upper limit of the norm. In the groups of patients with AH an increase in the relative wall thickness (RWT) of the LV was also detected. Furthermore, considerably higher the values of ILVmass, IVST were found in the group of patients on PH in comparison with the patients after RT. In addition, in all the groups of patients with AH, there was a tendency to LV spherification in comparison with the healthy volunteers, and in the group of essential AH the difference was more pronounced compared with the group under RRT.
Conclusion. In the patients with arterial hypertension who undergo renal replacement therapy, higher average values of central BP, higher vascular stiffness (daily pulse wave velocity in the aorta and a longer period of pulse wave velocity increase in the aorta during the day (PTIN)) and less pronounced left ventricular spherification are recorded in comparison with the patients with essential hypertension while office BP values remained consistent.
ANALYSIS OF CLINICAL CASES
Langerhans cell histiocytosis is a rare disease characterized by various clinical patterns: from isolated lung lesions to severe involvement of other organs. This clinical case demonstrates a rare combination of pulmonary Langerhans cell histiocytosis and Guillain—Barre syndrome due to possible common mechanisms of the disease development mediated by the CD1A expression.
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