Publications by authors named "Airapetian A"

Background: The topic of end-of-life decisions is important due to aging populations and the rising number of terminal illnesses like cancer. As more people experience suffering, the ethical, medical, and legal debates of these decisions become significant to healthcare policy. Understanding medical professionals' attitudes is critical for shaping responsible practices and legislation surrounding end-of-life care.

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Article Synopsis
  • The study aimed to assess how a decrease in glomerular filtration rate (GFR) impacts the prognosis of patients with chronic heart failure (CHF) and to evaluate the real-world prescribing practices for CHF treatment based on GFR levels in the Tyumen region.
  • In a review of 4,077 CHF patients from January 2020 to May 2023, it was found that 34.6% had a GFR of less than 60 ml/min/1.73 m², with women being more affected. The risk of mortality was higher for patients with significantly lower GFR values.
  • The analysis indicated a decline in the prescription rates of ACE inhibitors, beta-blockers, and mineral
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This study delves into the attitudes, beliefs and determinants influencing the uptake of the COVID-19 vaccine among the Lithuanian population. Utilizing a cross-sectional study design, a total of 3166 respondents were surveyed. The findings reveal a significant disparity in vaccination rates based on socio-demographic factors, with higher uptake observed among individuals with a university degree, urban residents and those in higher income brackets.

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The annual mortality of patients with clinically pronounced symptoms of chronic heart failure in the Russian Federation reaches 26-29%, i.e., from 880 to 986 thousand patients with heart failure die in the country in one year, which is comparable to the population of a large city.

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There are presented preliminary results of the analysis of the materials of the register of children and adolescents suffering from Familial Mediterranean Fever in Georgia. The register was created by the "snow ball" method. For today it contains data on 138 patients, 56 (40.

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Azimuthal single-spin asymmetries of leptoproduced pions and charged kaons were measured on a transversely polarized hydrogen target. Evidence for a naive-T-odd, transverse-momentum-dependent parton distribution function is deduced from nonvanishing Sivers effects for pi(+), pi(0), and K(+/-), as well as in the difference of the pi(+) and pi(-) cross sections.

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The first measurements of double-hadron production in deep-inelastic scattering within the nuclear medium were made with the HERMES spectrometer at DESY HERA using a 27.6 GeV positron beam. By comparing data for deuterium, nitrogen, krypton, and xenon nuclei, the influence of the nuclear medium on the ratio of double-hadron to single-hadron yields was investigated.

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The Hermes experiment has investigated the tensor spin structure of the deuteron using the 27.6 GeV/c positron beam of DESY HERA. The use of a tensor-polarized deuteron gas target with only a negligible residual vector polarization enabled the first measurement of the tensor asymmetry A(d)zz and the tensor structure function b(d)1 for average values of the Bjorken variable 0.

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Single-spin asymmetries for semi-inclusive electroproduction of charged pions in deep-inelastic scattering of positrons are measured for the first time with transverse target polarization. The asymmetry depends on the azimuthal angles of both the pion (phi) and the target spin axis (phi(S)) about the virtual-photon direction and relative to the lepton scattering plane. The extracted Fourier component sin((phi+phi(S))(pi)(UT) is a signal of the previously unmeasured quark transversity distribution, in conjunction with the Collins fragmentation function, also unknown.

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Double-spin asymmetries of semiinclusive cross sections for the production of identified pions and kaons have been measured in deep inelastic scattering of polarized positrons on a polarized deuterium target. Five helicity distributions including those for three sea quark flavors were extracted from these data together with reanalyzed previous data for identified pions from a hydrogen target. These distributions are consistent with zero for all three sea flavors.

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Spin-dependent lepton-nucleon scattering data have been used to investigate the validity of the concept of quark-hadron duality for the spin asymmetry A1. Longitudinally polarized positrons were scattered off a longitudinally polarized hydrogen target for values of Q2 between 1.2 and 12 GeV2 and values of W2 between 1 and 4 GeV2.

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Exclusive coherent and incoherent electroproduction of the rho(0) meson from 1H and 14N targets has been studied at the HERMES experiment as a function of coherence length (l(c)), corresponding to the lifetime of hadronic fluctuations of the virtual photon, and squared four-momentum of the virtual photon (-Q2). The ratio of 14N to 1H cross sections per nucleon, called nuclear transparency, was found to increase (decrease) with increasing l(c) for coherent (incoherent) rho(0) electroproduction. For fixed l(c), a rise of nuclear transparency with Q2 is observed for both coherent and incoherent rho(0) production, which is in agreement with theoretical calculations of color transparency.

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A knowledge of time parameters of the high mental functions of the brain under normal and pathological conditions may serve as a key to understanding of their intimate mechanisms. During the first stage of the study a set of different tests including "word association", "paired words learning" was used to compare these indices in patients with atherosclerotic discirculatory encephalopathy and in normal individuals. The dynamics and volume of the short-term memory and processes of attention were evaluated.

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The results of clinical, instrumental and laboratory examinations were analyzed for 99 patients. 59 of them had pancreatic head cancer, 40--chronic pseudotumorous pancreatitis. The importance of complex ultrasonic diagnosis in detection of pancreatic diseases (98%), in true diagnosis of unresectable tumors (96.

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Temporary compression of spinal cord was modelled in anesthetized cats. The degree of spinal disfunction was estimated by component analysis of far-field somatosensory EPs which were recorded along vertebral column and scalp. Even a weak and short-term compression of spinal cord's dorsal columns changed biopotentials' latencies, amplitudes and interpeak intervals.

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Neuronal responses in center median, medial dorsal and posterior lateral nuclei to the stimulations of n. reticularis were studied in restrained cats. 53.

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In acute experiments on anesthetized mature chickens, the bioelectrical activity of epibasal neurons was influenced upon both by means of intradermal histamine injections and direct histamine application to the medial region of n. epibasalis centralis, as well as by uni- and bilateral lesion of this structure. The processes under study were evaluated with respect to the parameters of focal potentials and neuronal reactions induced in n.

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Neuronal responses of the thalamic lateral posterior nucleus to single electrical shocks applied to radial, sciatic and splanchnic nerves, were studied in anesthetized immobilized cats. Different degrees of responsiveness (69, 63 and 51 per cent) and latencies (9-120, 12-130 and 16-130 ms) were revealed.

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Unit activity and field potentials recorded in the cat thalamic VPL nucleus in the radial and splanchnic nerves stimulations, revealed a distinct preference in localization of responses in the mediocentral and centrolateral areas of the nucleus, as well as similarities and differences in the patterns of responses to different types of stimulation. The convergence (particularly during long-latency responses) mostly occurred in the central areas. Inhibitory character of interactions between somato-visceral stimulations was more obvious during conditioned stimulation of the radial nerve.

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