Publications by authors named "Shalaev S"

Article Synopsis
  • This study investigated how giving an 80 mg loading dose of atorvastatin before coronary angiography affects the risk of contrast-induced nephropathy (CIN) in patients with STEMI.
  • In the analysis of 386 STEMI patients, those who received atorvastatin had a significantly lower incidence of CIN (10.5%) compared to those who did not (24.4%).
  • The results also showed that serum creatinine levels returned to baseline values more frequently in the atorvastatin group (66.3% vs. 50.6%) by day 7, indicating better kidney recovery.
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Aim      To determine predictors of acute kidney injury (AKI) related with surgeries for correction of acquired valvular heart disease (HD) and to evaluate the incidence of in-hospital complications in patients with postoperative AKI.Material and methods  This study included 62 patients after surgery for correction of acquired valvular HD (mean age, 61±10.9 years) with a disease duration of 11±5.

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Aim: Evaluation of the frequency hospital cardiovascular events in groups of patients with stable angina who underwent percutaneous coronary interventions (PCI) with stenting of the arteries before coronary bypass surgery, or who did not have previous myocardial revascularization.

Materials And Methods: The 120 patients with stable angina who underwent routine coronary artery bypass grafting were examined. Group composition: Men 80.

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A liquid biopsy based on circulating small extracellular vesicles (SEVs) has not yet been used in routine clinical practice due to the lack of reliable analytic technologies. Recent studies have demonstrated the great diagnostic potential of nanozyme-based systems for the detection of SEV markers. Here, we hypothesize that CD30-positive Hodgkin and Reed-Sternberg (HRS) cells secrete CD30 + SEVs; therefore, the relative amount of circulating CD30 + SEVs might reflect classical forms of Hodgkin lymphoma (cHL) activity and can be measured by using a nanozyme-based technique.

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The development of acute kidney injury (AKI) in patients during hospitalization worsens the prognosis. The study aimed to estimate the prognostic value of AKI in patients with ST-segment elevation myocardial infarction (MI) in prospective follow-up study. A prospective follow-up of 12 months included 268 patients with ST-segment elevation MI who underwent percutaneous coronary intervention.

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The literature review presents the characteristics of modern high - sensitivity tests for detection of Tn (hs - cTn) in the blood and the results of large studies on the diagnosis of non segment elevation myocardial infarction (nonSTEMI) using hs - cTn. The results of these studies served as the basis for the development of three - and one - hour diagnostic algorithms nonSTEMI, presented in the recommendations of the European Society of Cardiology 2012 and 2015 and also in fourth Universal Definition of Myocardial Infarction 2018.

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Aim: To assess the prevalence and prognostic value of AKI in patients with acute decompensation of chronic heart failure (ADCHF) with a reduced ejection fraction (HFrEF) and with preserved ejection fraction (HFpEF) or acute coronary syndrome (ACS), to identify predictors of AKI.

Materials And Methods: In a prospective study included 863 patients, of which 141 with ADCHF, 446 - non-ST-elevation acute coronary syndromes (NSTE-ACS) and 276 - ST-segment elevation myocardial infarction (STEMI). AKI was diagnosed according to KDIGO recommendations.

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Aim: To study clinical prognostic value of residual platelet activity in patients with acute coronary syndrome without ST segment elevation.

Material And Methods: The study included 120 patients with acute coronary syndrome without ST segment elevation (NSTE ACS) with coronary artery stenting. Testing of residual reactivity of platelets in the subjects was carried out after loading doses of  aspirin and P2Y12-inhibitors.

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Aim: Evaluate the frequency and risk factors of postoperative atrial fibrillation (pAF) in patients with chronic coronary artery disease (CHD) with acute kidney injury (AKI) developed in connection with coronary artery bypass grafting (CABG).

Materials And Methods: The study involved 90 patients (pts) undergoing CABG at age 58±7 years, duration of CHD - 6±6 years. 80% of pts had previous myocardial infarction.

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Background: Despite the PCI in patients with ST-segment elevation myocardial infarction (STEMI) the development of acute heart failure (AHF) Killip ≥II is associated with a poor prognosis.

Aim: To identify predictors of the development of AHF and the prognostic value of AHF in patients with STEMI after PCI.

Materials And Methods: In a prospective study, which lasted 6 months, included 233 patients (average age of 62.

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Aim: To assess frequency and prognostic value of contrast-induced acute kidney injury (CI-AKI) after percutaneous coronary intervention (PCI) in patients with ST-elevation myocardial infarction (STEMI).

Materials And Methods: We included in this prospective observational study 233 patients with STEMI. Duration of follow-up was 6 months.

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In recent years, the issues of choice of an agent for dual antiplatelet therapy (DAPT) as well as timing of initiation and duration of DAPT in patients with acute coronary syndrome (ACS) have been actively discussed. In this article we present data of major randomized trials of clopidogrel and novel P2Y12 inhibitors - prasugrel, ticagrelor, cangrelor - assessing strategy of administration of antiaggregants in patients with ACS before coronary angiography / percutaneous coronary intervention. The article also contains analysis of differences between recommendations of the European Society of Cardiology and American College of Cardiology/American Heart Association on therapy with oral P2Y12 inhibitors in the management of patients with ACS.

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The study was aimed at revealing the factors associated with renal dysfunction having developed after coronary artery bypass grafting (CABG) and assessing the in-hospital cardiovascular complications rate amongst patients with postoperative renal dysfunction. The study included a total of 99 patients presenting with stable angina pectoris and having indications for CABG. The mean age of the patients amounted to 57±7 years, with the average duration of coronary artery disease (CAD) of 6±5.

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Aim: To study the prognostic value of therapy-induced changes in plasma NT-proBNP levels in patients with left ventricular (LV) systolic dysfunction.

Subjects And Methods: The study covered 84 patients aged 23 to 70 years (mean 54 +/- 8.1 years) with LV systolic dysfunction (an ejection fraction of < 40%).

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The GRACE prognostic scale appeared ineffective for prognostication of deaths and sum of deaths and myocardial infarctions (MI) during hospitalization and demonstrated moderate level of prognostic value during 6 months of observation. TIMI model gave similar result relative to prediction of death/MI/refractory ischemia during 14 days and 12 months of observation. PURSUIT risk model showed very good level of prognostic significance during 30 days and 12 months of observation.

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The aim of this work was to investigate prognostic value of creatine kinase MB-fraction and troponin T increase in patients after coronary bypass grafting (during 3-year prospective observation). Parameters were studied in 6, 12, 48 and 72 hours after surgical myocardial revascularization. It was revealed that increase of myocardial necrosis markers is associated with significant more frequent development of cardiovascular complications during 3-year prospective observation.

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Aim: The aim of the study is to assess the efficiency of early invasive treatment versus conservative treatment for patients with non-ST acute coronary syndrome (ACS), and to study immediate results of percutaneous coronary intervention (PCI) in terms of the risk of adverse events.

Material And Methods: The investigation includes 112 patients with non-ST ACS having risk of adverse outcome determined by the GRACE system. More than half of the patients (77/68.

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The review gives the results of large clinical studies of the prognostic value of hyperglycemia in patients with acute coronary syndrome and discusses the basic mechanisms determining the increased cardiovascular risk. The advantages of invasive treatment policy are also described in diabetic patients with an exacerbation of coronary heart disease.

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We included 63 patients with chronic heart failure of ischemic origin (32 with left ventricular ejection fraction less than 40%) into prospective study with average duration of follow-up 27+/-10 months. Relative risk of lethal outcome was significantly increased in patients with initial endsystolic left ventricular dimension >6.0 m, enddiastolic left ventricular dimension >7.

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Aim: To determine plasmic concentrations of NT-proBNP, TNFalpha and IL-6 in patients with coronary heart disease (CHD) complicated with chronic cardiac failure (CCF); to compare these parameters with hemodynamic and functional ones.

Material And Methods: A total of 157 CHD patients (84.1% males, mean age 54.

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The work presents an experience with the diagnosing of synchronous tumors of double localization in 256 patients. Operations were performed on 146 of them. Single-stage operations were made in 55 cases.

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Aim: To compare prognostic significance of troponin T (TnT) and MB creatine kinase (MB CK) elevations after percutaneous coronary interventions (PCI).

Material And Methods: Patients with ischemic heart disease (n=122) were followed for 9+/-3 months after PCI. Coronary angiography was repeated in 79% of cases.

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