Changes in Long-term Mortality in Patients with Myocardial Infarction History According to the LIS Luberetskiy registry

Aim. The aim of the research was to study the dynamics of distant cases of the disease that underwent AMI in 2005-2007 (LIS registry) and in 2014 and 2018 (LIS-3 registry), discharged from the same hospital of the Lyubertsy District Hospital (LDH).Material and methods. The study was conducted on the basis of two registries - a retrospective-prospective register LIS (Lyubertsy investigation of death), which was conducted in the Lyubertsy district of the Moscow region, all cases of check-ups in the AMI hospital for a 3-year period (2005- 2007) and the prospective register LIS-3 (11/01/2013 – to the present), which included patients admitted to the cardiology department of the Lyubertsy District Hospital No. 2 with the correct diagnosis of Acute coronary syndrome with and without ST segment elevation. With patients discharged from the hospital, a telephone contact was established no earlier than 1 year after discharge to clarify the life status, and in case of death – to find out its causes. Search for patients who did not answer the phone call, was using by the study of the archive of the polyclinic, with database statistics. Longterm cases of the LIS were compared with LIS-3 registers, clinical demographic characteristics and risk indicators in patients in the LIS and LIS-3 registers were also compared, differences in drug therapy before the onset of AMI and after discharge from the hospital register between LIS and LIS3 were analyzed.Results. Out of 327 patients, the registry included 104 (31.8%) patients discharged in 2014 and 223 (68.2%) in 2018. When comparing the longterm mortality curves of the LIS and LOS-3 registers, a significant difference was noted. The LIS-3 study revealed more frequent referrals for antiplatelet agents (20% vs 16%), statins (11.6% vs 2.0%). Less commonly, diuretics began to be prescribed at the prehospital level. After discharge from the hospital in the LIS-3 registry, a decrease compared to the LIS registry, more frequent prescription of antiplatelet agents (97.5% vs 85.0%), anticoagulants (1.1% vs 0%), statins (96.5% vs 67.0%), beta-blockers (93.3% vs 81.0%). Less commonly, diuretics are prescribed at discharge from the hospital.Conclusion. The present study of the LIS-3 registry showed a significant decrease in the incidence of those who had AMI, which occurred 15-20 years after the LIS registry was conducted

INFLUENCE OF PATIENTS’ PREHOSPITAL ATTENDANCE AT OUTPATIENT CLINICS ON LONG-TERM OUTCOMES OF ACUTE CORONARY SYNDROME: LIS-3 STUDY

Aim. To assess influence of patients’ prehospital attendance at outpatient clinics on long-term outcomes of acute coronary syndrome (ACS).Material and methods. Patients (n=397) hospitalized with ACS (01.11.2013-31.07.2015) were included. 19.4% of patients died in hospital (77/397).-According to their rate of attendance at outpatient clinics all survived patients (n=320) were divided into 3 groups: committed to visiting outpatient-clinics (n=139), partially committed (n=103) and not committed (n=78). Follow-up period was 14-35 months (88.44% follow-up rate). During-follow-up period 12.5% of patients died (40/320). All-cause mortality and recurrent cardiovascular diseases (nonfatal myocardial infarction and stroke,-unstable angina) were defined as the primary endpoint. Prognostic significance of separate factors and their combinations were assessed by their influence on the primary endpoint.Results. Clinical severity of course of the disease was assessed regarding all factors that had influence on the primary endpoint. By their degree of influence on the primary endpoint each factor was given a certain score. According to the sum of all scores patients were divided into 2 groups: patients with less (n=205) and more (n=78) severe clinical course of the disease. Risk of development of primary endpoint was higher in patients with more severe clinical course of the disease (relative risk 3.997; 95% confidence interval 2.199-7.267; p <0.0001) regardless of patients’ attendance at outpatient-clinics (p>0.05).Conclusion. Patients’ prehospital attendance at outpatient clinics did not affect long-term outcomes of acute coronary syndrome. Patients with more-severe clinical course of the disease were more likely to develop adverse outcomes during the follow-up regardless of their prehospital attendance at outpatient clinics

Beam-helicity asymmetries for single-hadron production in semi-inclusive deep-inelastic scattering from unpolarized hydrogen and deuterium targets

A measurement of beam-helicity asymmetries for single-hadron production in deep-inelastic scattering is presented. Data from the scattering of 27.6 GeV electrons and positrons off gaseous hydrogen and deuterium targets were collected by the HERMES experiment. The asymmetries are presented separately as a function of the Bjorken scaling variable, the hadron transverse momentum, and the fractional energy for charged pions and kaons as well as for protons and anti-protons. These asymmetries are also presented as a function of the three aforementioned kinematic variables simultaneously

Challenges of Statin Therapy in Clinical Practice (According to Outpatient Register «PROFILE» Data)

Aim. To identify the main problems of statin therapy in patients with high and very high cardiovascular (CV) risk in real clinical practice.Material and methods. The general information of the study was based on data from 2,457 patients who were included in the register before November 30, 2020: 1,250 men (50.9%) and 1,207 (49.1%) women. A more detailed analysis was performed for groups of patients with high          and very high CV risk who had indications for statin treatment at the time of inclusion in the register: out of 2457 patients, 1166 people had very high CV risk, 395 was at high CV risk (a total of 1561 people, the average age of patients was 64.4±11.0 years).Results. Information on the parameters of the lipidogram – the level of total cholesterol (TC) and low-density lipoprotein cholesterol (LDL-C) was available in 1918 (78.1%) and 1546 (62.9%) patients, respectively. Of 1561 patients with high and very high CV risk, TC and LDL-C levels were analyzed in 1221 (78.2%) and 956 (61.2%) cases, statistically significantly more often in patients with high CV risk (p<0.05). Statins were recommended only to 823 (52.7%) patients with high and very high CV risk. Patients with very high CV risk received such appointments 4 times more often than patients with high CV risk: odds ratio (OR) 4.2; 95% confidence interval (CI) 3.2-5.3 (p<0.001). Doctors preferred atorvastatin in prescriptions (n=456, 55.4%), rosuvastatin (n=244, 29.7%) and simvastatin (n=121, 14.7%) were in second and third places. The target level of LDLC was 2 times more often achieved in patients with high CVR, compared with patients with very high CV risk: OR = 2.0, 95% CI 1.4-3.0 (p<0.001).Conclusion. The main problems of statin treatment in real clinical practice remain the non-assignment of these drugs to patients who have indications for such therapy and the failure to achieve the target levels of lipidogram indicators, which may probably be due to the clinical inertia of doctors regarding titration of statin doses, and in some cases caused by the choice of drugs that are not the most effective in reducing LDL cholesterol. Patients with very high CV risk are 4 times more likely to receive a recommendation to take statins compared to patients with high CV risk, but the target level of LDL cholesterol is reached in them 2 times less often

Detection and Treatment of Hyperuricemia in Clinical Practice (According to the PROFILE Outpatient Registry)

Aim. To study the frequency of detection of hyperuricemia (HU) in patients with high and very high cardiovascular risk and the frequency of prescribing drugs that lower serum uric acid (sUA) levels in real clinical practice.Material and methods: The general information of the study was based on the data of 2457 patients who were consistently included in the «PROFILE» registry until November 30, 2020: 1250 men (50.9%) and 1207 (49.1%) women. All patients with HU were selected (UA level ≥360 pmol/l in women, ≥420 pmol/l in men). At the stage of inclusion of the patient, data on MC indicators were available in 1777 (72.3%), upon re-examination - only 262 (33.2%) out of 790 patients who returned to the appointment.Results: The most common study of the level of sUA was performed in patients with gout (65.2%), with arterial hypertension (AH) and dyslipemia in 29.1% of cases, with diabetes mellitus (DM) - 30.1%, with impaired tolerance to glucose (IGT) - 40.2%, with other diseases, the proportion of patients with a known UA was even less. A positive relationship was found between the presence of AH and IGT with the frequency of UA control (p<0.001). In patients with AH, an increase in the level of sUA was detected significantly more often than in patients without AH (p<0.001), and less frequently in patients with DM and IGT (p<0.001 and p<0.01, respectively). The frequency of allopurinol prescribing was low: 49 (2%) patients received therapy, while of the 284 patients with HU, only 20 (7%) were prescribed allopurinol.Conclusion: in real clinical practice, only 29.1% of patients with AH and 20-25% of patients with other CVDs were monitored for sUA levels, every third patient had data on sUA levels at a repeat visit. In the presence of gout, the proportion of patients with current UA was higher (65%). For those with AH and IGT, positive correlations were found between the presence of the disease and control of sUA levels. A low frequency of prescribing drugs for the correction of HU was revealed

CONCOMITANT CARDIOVASCULAR DISEASES AND ANTIHYPERTENSIVE TREATMENT IN OUTPATIENT PRACTICE (BY THE RECVASA REGISTRY DATA)

Aim. To study a pattern of concomitant cardiovascular diseases (CVDs) and to estimate particularities and quality of medical antihypertensive therapy in hypertensive patients in real outpatient practice with a help of the Registry in Ryazan region.Material and methods. A total of 3690 patients with hypertension, ischemic heart disease, chronic heart failure and atrial fibrillation, who had attended general practitioners and cardiologists of 3 outpatient clinics in Ryazan city, were enrolled in the outpatient Registry of cardiovascular diseases (RECVASA). The diagnosis of hypertension was recorded in 3648 of 3690 (98.9%) outpatient charts, 28.1% of the subjects were men and 71.9% - women.Results. A total of 2907 (79.7%) of 3648 patients had combination of hypertension with other CVDs. Combination of 3-4 cardiovascular diagnoses was registered in 63.8% of the cases. 11.5% and 9.5% of the patients had a history of myocardial infarction and cerebral stroke, respectively. Diagnosis of hypertension was verified in 448 of 450 randomized hypertensive patients (99.6%). The incidence of prescription of one and two antihypertensive drugs (AHDs) was 25% and 39%, respectively, of 3 AHDs – 21%, 4 and more – 2%. AHDs were not prescribed in 13% of hypertensive patients. The mean number of prescribed AHDs was 1.73. The mean incidence rate of target blood pressure achievement was 26.1%. We have noted insufficient ACE inhibitors/angiotensin receptor blockers (ARB) and beta-blockers prescription in different concomitant CVDs. Patients with 3-4 cardiovascular diagnoses were more often prescribed combined antihypertensive treatment. Prescription of ACE inhibitors/ARB, beta-blockers and thiazide diuretics combination was preferable in 74.1% of the cases, when taking into account absolute and relative contraindications for betablockers use – in 64.0%. 15.2% of the hypertensive patients used reimbursed drugs for CVDs at the moment of the Registry enrollment as compared with 39.2% in previous years (p<0.05).Conclusion. The RECVASA study data allowed revealing high incidence of concomitant CVDs in hypertensive patients, insufficient use of combined antihypertensive treatment, including AHDs with proved favorable influence on prognosis. Achievement of concordance of medical treatment to national and international guidelines, taking into account concomitant CVDs, and optimization of patients’ coverage with reimbursed drugs are the main reserves for antihypertensive treatment quality improvement

Prehospital Period in Patients with COVID-19: Cardiovascular Comorbidity and Pharmacotherapy During the First Epidemic Wave (Hospital Registry Data)

Aim. Based on the data from the register of patients with COVID-19 and community-acquired pneumonia (CAP), analyze the duration of the prehospital period, cardiovascular comorbidity and the quality of prehospital pharmacotherapy of concomitant cardiovascular diseases (CVD).Material and methods. Patients were included to the study which admitted to the FSBI "NMHC named after N.I. Pirogov" of the Ministry of Health of the Russian Federation with a suspected or confirmed diagnosis of COVID-19 and/or CAP. The data for prehospital therapy, information from medical histories and a patients’survey in the hospital or by telephone contact 1-2 weeks after discharge were study. The duration of the prehospital stage was determined from the date of the appearance of clinical symptoms of coronavirus infection to the date of hospitalization.Results. The average age of the patients (n=1130; 579 [51.2%] men and 551 [48.8%] women) was 57.5±12.8 years. The prehospital stage was 7 (5,0; 10,0) days and did not differ significantly in patients with the presence and absence of CVD, but was significantly less in the deceased than in the surviving patients, as well as in those who required artificial lung ventilation (ALV). 583 (51.6%) patients had at least one CVD. Cardiovascular comorbidity was registered in 222 (42.7%) patients with hypertension, 210 (95.5%) patients with coronary heart disease (CHD), 104 (91.2%) patients with atrial fibrillation (AF). The inclusion of non-cardiac chronic diseases in the analysis led to an increase in the total proportion of patients with concomitant diseases to 65.8%. Approximately a quarter of hypertensive patients did not receive antihypertensive therapy, a low proportion of patients receiving antiplatelet agents and statins for CHD was revealed – 53% and 31.8%, respectively, anticoagulants for AF – 50.9%.Conclusion. The period from the onset of symptoms to hospitalization was significantly shorter in the deceased than in the surviving patients, as well as in those who required ALV. The proportion of people with a history of at least one CVD was about half of the entire cohort of patients. In patients with CVD before COVID-19 disease, a low frequencies of prescribing antihypertensive drugs, statins, antiplatelet agents and anticoagulants (in patients with AF) were recorded at the prehospital stage

Beam-helicity asymmetries for single-hadron production in semi-inclusive deep-inelastic scattering from unpolarized hydrogen and deuterium targets

A measurement of beam-helicity asymmetries for single-hadron production in deep-inelastic scattering is presented. Data from the scattering of 27.6 GeV electrons and positrons off gaseous hydrogen and deuterium targets were collected by the HERMES experiment. The asymmetries are presented separately as a function of the Bjorken scaling variable, the hadron transverse momentum, and the fractional energy for charged pions and kaons as well as for protons and anti-protons. These asymmetries are also presented as a function of the three aforementioned kinematic variables simultaneously

СРАВНИТЕЛЬНАЯ ХАРАКТЕРИСТИКА МУЛЬТИМОРБИДНОСТИ, МЕДИКАМЕНТОЗНОГО ЛЕЧЕНИЯ И ИСХОДОВ У БОЛЬНЫХ С СОЧЕТАНИЕМ ПЕРЕНЕСЕННОГО ОСТРОГО НАРУШЕНИЯ МОЗГОВОГО КРОВООБРАЩЕНИЯ И ФИБРИЛЛЯЦИИ ПРЕДСЕРДИЙ ПРИ НАЛИЧИИ ИЛИ ОТСУТСТВИИ АНАМНЕЗА ИНФАРКТА МИОКАРДА (ДАННЫЕ РЕГИСТРОВ РЕГИОН)

AIM. Within the framework of outpatient and hospital registers of REGION (REGIster of patients who have undergone acute cerebrovascular accident) to carry out a comparative assessment of demographic and clinical-anamnestical characteristics, medical treatment and outcomes in clinical practice in patients with a combination of undergone acute cerebrovascular accident (ACVA) and atrial fibrillation (AF) in the presence or absence of myocardial infarction (MI) in the medical history.MATERIAL AND METHODS. Outpatient registers REGION (Ryazan) and hospital register REGION (Moscow) included 1886 patients who have undergone ACVA (age 70.6 ± 12.5 years, 41.9% of men), of them 516 (27.4%) people with AF. Comparison groups included 152 (8.1%) patients with a combination of ACVA, AF and MI in medical history (ACVA + AF + MI group) and 364 (19.3%) patients with ACVA, AF without MI (ACVA + AF without MI group). The presence of cardiovascular diseases (CVD), concomitant diseases, drug therapy and outcomes were analyzed.RESULTS. In the group of ACVA + AF + MI patients, compared to the ACVA + AF without MI group, the share of patients with AH (100% and 97.2%), IHD (100% and 87.1%), CHD (68.4% and 57.1%), repeated ACVA (36.9% and 23.9%), diabetes mellitus in women (39.5% and 20.4%) was statistically significantly higher. In the comparison groups, the share of smokers (13.3% and 15.5%), patients with burdened heredity of early development of CVDs (2.1% and 1.1%) and hypercholesterolemia (41.1% and 50.0%) did not differ significantly, however, in the group of ACVA + AF + MI, in comparison with the group of ACVA + AF without MI, there was a higher risk on the CHA2DS2-VASc scale (5.26 ± 1.32 and 4.09 ± 1.44; p < 0.001) and HAS-BLED scale (1.91 ± 0.76 and 1.62 ± 0.79; p < 0.01). Patients with AF of REGION register, both with and without MI, had insufficient frequency of proper medical prescriptions for CVDs (46.6% and 38.9% on average), especially prescription of anticoagulants (19.1% and 21.4%), statins in case of IHD (33.6% and 27.4%) and beta-adrenoblockers in case of CHD (39.4% and 35.6%).  During the four-year period of observation, in comparison with post-stroke patients without a history of MI, the mortality rate for all causes was 1.5 times higher (56.6% and 37.6%, p = 0.0001), the incidence of non-fatal MI was higher (2.0% and 0.3%,p = 0.04). CONCLUSION. Patients with a combination of ACVA, AF and MI history are a very high risk group for adverse outcomes observed on an outpatient stage. For these patients it is very important to improve the quality of drug therapy and the effectiveness of secondary prophylaxis.ЦЕЛЬ. В рамках амбулаторных и госпитального регистров РЕГИОН (РЕГИстр больных, перенесших Острое Нарушение мозгового кровообращения) провести сравнительную оценку демографических и клинико-анамнестических характеристик, медикаментозного лечения и исходов в клинической практике у больных с сочетанием перенесенного острого нарушения мозгового кровообращения (ОНМК) и фибрилляции предсердий (ФП) при наличии или отсутствии инфаркта миокарда (ИМ) в анамнезе.МАТЕРИАЛ И МЕТОДЫ. В амбулаторные регистры РЕГИОН (Рязань) и в госпитальный регистр РЕГИОН (Москва) включено 1886 пациентов, перенесших ОНМК (возраст 70,6 ± 12,5 лет, 41,9% мужчин), из них с ФП 516 (27,4%) человек. Группы сравнения составили 152 (8,1%) пациента с сочетанием перенесенного ОНМК, ФП и ИМ в анамнезе (группа ОНМК + ФП + ИМ) и 364 (19,3%) больных с ОНМК, ФП без анамнеза ИМ (группа ОНМК + ФП без ИМ). Проанализированы наличие сердечно-сосудистых заболеваний (ССЗ), сопутствующих заболеваний, медикаментозная терапия и исходы.РЕЗУЛЬТАТЫ. В группе пациентов ОНМК + ФП + ИМ, по сравнению с пациентами группы ОНМК + ФП без ИМ, была статистически значимо выше доля лиц с АГ (100% и 97,2%), ИБС (100% и 87,1%), ХСН (68,4% и 57,1%), повторного ОНМК (36,9% и 23,9%), сахарного диабета у женщин (39,5% и 20,4%). В группах сравнения доля курящих (13,3% и 15,5%), пациентов с отягощенной наследственностью раннего развития ССЗ (2,1% и 1,1%) и гиперхолестеринемией (41,1% и 50,0%) существенно не различалась, однако в группе ОНМК + ФП + ИМ, по сравнению с группой ОНМК + ФП без ИМ, был выше риск по шкале СHA 2DS2–VASc (5,26 ± 1,32 и 4,09 ± 1,44; p < 0,001) и шкале HAS-BLED (1,91 ± 0,76 и 1,62 ± 0,79; p < 0,01). У больных с ФП регистра РЕГИОН, как с перенесенным ИМ, так и без ИМ, частота должных медикаментозных назначений по поводу ССЗ была недостаточной (в среднем 46,6% и 38,9%), особенно назначения антикоагулянтов (19,1% и 21,4%), статинов при ИБС (33,6% и 27,4%) и бета-адреноблокаторов при ХСН (39,4% и 35,6%). За четырехлетний период наблюдения у больных группы ОНМК + ФП + ИМ, по сравнению с постинсультными пациентами без анамнеза ИМ, смертность от всех причин была в 1,5 раза выше (56,6% и 37,6%, p = 0,0001), чаще развивался нефатальный ИМ (2,0% и 0,3%, р = 0,04).ЗАКЛЮЧЕНИЕ. Больные с сочетанием перенесенных ОНМК, ФП и анамнеза ИМ являются группой очень высокого риска неблагоприятного исхода при наблюдении на амбулаторном этапе. Для данных пациентов крайне важным является повышение качества медикаментозной терапии и эффективности вторичной профилактики

Modeling macrosegregation during the vacuum arc remelting of titanium-vanadium-iron-aluminum alloy

Vacuum arc remelting (VAR) is a secondary melting process for production of metal ingots with elevated chemical and mechanical homogeneity for highly demanding applications. The ingots from VAR process are typically used as a material for critical parts of jet engines and industrial gas turbines as well as in military applications and heavy industry. The specifications of such applications often demand outstanding material properties. The common examples of such materials are Ni or Ti-based super alloys and highly alloyed steels. One of the most important problems of Vacuum Arc Remelting (VAR) is the lack of chemical homogeneity in the produced ingots. Past numerical studies of VAR have demonstrated that the characteristics of the mushy zone, the fluid flow and their interaction are the key factors defining the severity and the character of macrosegregation in the produced ingots. Thus, a new numerical model of the complete VAR process, capable of representing two distinctive morphologies of mushy zone: rigid columnar structure and slurry of free floating equiaxed grains is introduced. The presented model accompanied by a simple criterion for the columnar-to-equiaxed transition allows the capture of segregation defects induced by motion and settling of equiaxed grains. Moreover, the numerical simulations with the new model include studies of two distinctive flow regimes in VAR: strong Lorentz driven flow and weak buoyancy driven flow. The results demonstrate a swift transition from weak buoyancy driven flow to strong electromagnetically driven flow with the increase of arc current. The change of flow regime to strong electromagnetically driven mode results in stepwise increase of macrosegregation and thus is not desirable. The key to understanding the swift transition of flow regimes is the instabilities of the thermal stratification within liquid pool at the early stages of the VAR process. The model also was used for the study of macrosegregation evolution during multiple VAR melts, when the ingot of the previous melt is used as a source material for the next melt. The simulation results demonstrated that the increase of microsegregation through the sequence of multiple melts mostly occurs due to the increase of ingot radius, and not the nonuniformity in electrode composition. However, in some instances, the electrode composition may result in additional buoyancy forces in the liquid pool and affect the flow regime and thus composition