EXPERT ADVICE
In September 2021, an online meeting of the Council of Experts was held. The proposed focus of discussion was publishing the results of an international prospective, randomized, double-blind, placebo-controlled study VICTORIA. The objective of the VICTORIA study was evaluation of the efficacy and safety of supplementing a standard therapy with vericiguat at a target dose of 10 mg twice a day as compared to placebo for prevention of cardiovascular death and hospitalization for heart failure (HF) in patients with clinical manifestations of chronic HF and left ventricular ejection fraction <45% who have recently had an episode of decompensated HF. The aim of the meeting was interpretation of the VICTORIA study results on efficacy and safety of vericiguat for a potential use in a Russian population of patients after a recent episode of decompensated chronic HF with reduced ejection fraction.
RESEARCH ARTICLES
Aim To evaluate the frequency and structure of lipid-lowering therapy and of achieving the goal of low-density lipoprotein cholesterol (LDL-C) in patients with very high cardiovascular risk (CVR) who were monitored at the outpatient stage.
Material and methods A retrospective snapshot analysis was performed by continuous sampling method for 136 medical records of outpatient patients (71 men, 65 women) aged 42 to 91 years [median, 68 years; 25th and 75th percentiles (59; 78)].
Results 134 (98,53 %) patients took statins; 8 (5.88 %) patients took a combination of statin and ezetimibe; 2 (1.47 %) patients took proprotein convertase subtilisin/kexin type 9 enzyme inhibitors (PCSK9): 2 (1.47 %) patients took evolocumab and 1 (0.74%) of 2 PCSK9-treated patients took a combination of PCSK9 inhibitor and statin. Atorvastatin at a dose of 20 (20; 40) mg as recommended at the hospital was the most frequently prescribed statin. 5 (3.68%) patients achieved the goal LDL-C of ≤1.4 mmol/l.
Conclusion Statins prevail in the structure of lipid-lowering therapy in patients with very high CVR. The frequency of combination therapy (statin/ezetimibe, 5.88%; PCSK9 inhibitor/statin, 0.74%) and PCSK9 inhibitors was noted to be low. Only 3.68% of patients achieved the goal LDL-C during the lipid-lowering treatment.
Aim To study the dynamics of right ventricular function and pulmonary hemodynamics in patients with pulmonary hypertension during mechanical circulatory support of the heart.
Material and methods A retrospective analysis was performed for 25 implantations of left ventricular assist device performed in the Meshalkin National Medical Research Center from 2006 through 2021. Mechanical assist devices were implanted in 21 men and 4 women (median age, 37.5 [29; 48] years). All patients had severe, NYHA functional class III-IV chronic heart failure refractory to the optimal drug therapy. Invasive measurements showed that mean pulmonary arterial pressure (MPAP) was 50 [44.5; 60] mm Hg, transpulmonary pressure gradient (TPG) was 16 [14; 19] mm Hg, and calculated pulmonary vascular resistance was 5.4 [4.9; 9] Wood units, which is an absolute contraindication (TPG >15 mm Hg or pulmonary vascular resistance >5 Wood units) for heart transplantation (HT).
Results Duration of left ventricular support was from 17 to 948 days. For 12 (48 %) patients, the HT was performed at 180-948 days following the implantation of left ventricular assist device; 3 patients are presently waiting for HT; 10 patients died from various complications, 6 of them died during the hospital stage. Already during the early stage after the implantation of the mechanical assist device, pulmonary hemodynamics significantly improved. Thus, in one week, MPAP decreased from 50 [44.5; 60] mm Hg to 36 [33; 38] mm Hg (р=0.012) whereas pulmonary vascular resistance decreased from 5.4 [4.9; 9] to 2.9 [2.4; 3.6] Wood units (р=0.008). Follow-up showed further improvement of pulmonary hemodynamics; at 1 month, MPAP was 29 [27; 30] mm Hg and by the time of HT, MPAP was 2.0 [24.8; 26.3] mm Hg (р=0.01), i.e., reached a normal level, which made it possible to perform HT. Similar dynamics was observed for other variables that reflected pulmonary hemodynamics.
Conclusion Mechanical support of the heart is able to alleviate manifestations of pulmonary hypertension in most patients with end-stage heart failure. It is necessary to develop an algorithm for identifying the category of patients with a high risk of progression of right ventricular failure.
Aim To evaluate the predictive significance of gene polymorphism in endothelin-1 type 2A receptor, NADPH oxidase, p53 protein, endothelial nitric oxide synthase, caspase 8, interleukin-1β, tumor necrosis factor-α, superoxide dismutase-2, glutathione peroxidase-1, β1-adrenoceptor, angiotensin-converting enzyme, and matrix metalloproteinase-3 (MMP-3) genes in evaluating the risk of anthracycline-induced cardiotoxicity (AIC) in women without concurrent cardiovascular diseases (CVD).
Material and methods This study included 176 women aged 45.0 [42.0; 50.0] years with breast cancer without concurrent CVD who were scheduled for polychemotherapy (PCT) with anthracycline antibiotics. Echocardiography was performed for all patients at baseline and at 12 months after the end of PCT course. Genetic polymorphism was determined with the polymerase chain reaction.
Results At 12 months, all patients were in remission of the underlying disease. They were retrospectively included into 2 groups: 1st group, 52 patients with AIC and 2nd group, 124 women without AIC symptoms. The development of AIC was associated with the presence of the p53 protein gene Arg / Arg genotype (odds ratio (OR), 2.972; p=0.001), NOS3 gene T / T genotype (OR, 3.059; p=0.018), NADPH oxidase gene T / T genotype (OR, 2.753; p=0.008), GPX1 gene C / C genotype (OR, 2.345; p=0.007), MMP-3 gene 5A / 5A genotype (OR, 2.753; p=0.008), and ADRB1 gene G / G genotype (OR, 3.271; p=0.043).
Conclusion Evaluation of genetic polymorphism in p53 protein (rs1042522), NOS3 (rs1799983), NADPH-oxidase (rs4673), GPX1 (rs1050450), ADRB1 (Arg389Gly, rs1801253), and MMP-3 (rs3025058) genes can be recommended for use prior to starting chemotherapy in women with breast cancer without CVD for assessing the risk of AIC. A maximum risk of cardiotoxicity is associated with the presence of the p53 protein gene Arg / Arg genotype and NOS3 gene T / T genotype.
ABSTRACTS OF THE NATIONAL CONGRESS
ISSN 2412-5660 (Online)