Хирургическая коррекция положения предплечья у детей с врожденным радиоульнарным синостозом: систематический обзор литературы

Background. Congenital radioulnar synostosis (CRUS) may have a negative impact on the function of the upper limb and cause disability. The main aim of the surgical treatment is to correct the forearm position for diminishing functional limitations. The study aimed to analyze the variety of surgical methods for correction of the pronation forearm deformity in children with congenital radioulnar synostosis based on the literature data. Methods. We have searched publications in eLIBRARY, PubMed (MEDLINE), Ovid, ScienceDirect, Google Scholar databases. The analysis has included the age at surgery, indications for surgery, the target functional forearm position, the time of consolidation of the forearm bones, the frequency of neurovascular complications. Results. Most authors considered subjective complaints as the main indication for surgical treatment, while some researchers recommended taking into account the forearm hyperpronation position. The median age of the surgical treatment was 5.17 years (3.25-9.46). The medians of the recommended forearm positions for unilateral CRUS were 0-10 of pronation for the dominant, and 0-12.5 of supination for the non-dominant limb; with bilateral cases 0-17.5 pronation for the dominant and 0-12 supination for the non-dominant limb. Median of the osteotomy consolidation time varied from 6 to 8 weeks. The maximal time of forearm bone consolidation was significantly higher (p = 0.024) in the group with osteotomies through the synostosis site. Though the target forearm position was achieved in all cases, the number of complications in the proximal osteotomy group was statistically significantly different (p0.01). The chances of neurovascular complications were 20.5 times higher in the group of patients who underwent osteotomy through the synostosis (95% CI: 2.7-155.6). Conclusions. The problem of surgical treatment of children with CRUS in the world medical practice remains relevant despite the wide range of proposed methods. The development of an algorithm regarding the need for surgical treatment and its methodology requires further high-quality research.Актуальность. Врожденный радиоульнарный синостоз (ВРУС), будучи редкой аномалией развития, может оказывать существенное негативное влияние на функцию верхней конечности, затруднять самообслуживание. Основная задача хирургического лечения коррекция положения предплечья с целью расширения функциональных возможностей. Цель анализ данных литературы о хирургических методах коррекции пронационной деформации предплечья у детей с врожденным радиоульнарным синостозом. Материал и методы. Поиск публикаций выполнен в базах данных eLIBRARY, PubMed (MEDLINE), Ovid, ScienceDirect, Google Scholar. Проанализированы сроки консолидации костей предплечья, возраст хирургического лечения, показания к операции, целевое функциональное положение предплечья, частота нейроваскулярных осложнений в зависимости от варианта операции. Результаты. Большинством авторов рекомендовано выполнение хирургического вмешательства при наличии субъективных жалоб, некоторые исследователи рекомендуют учитывать степень гиперпронационного положения предплечья. Медиана возраста хирургического лечения составила 5,17 лет (3,259,46). Медианы рекомендуемых целевых функциональных положений при одностороннем ВРУС составили для доминантной конечности 010 пронации, для субдоминантной 012,5 супинации; при двустороннем поражении 017,5 пронации для доминантной и 012 супинации для субдоминантной конечностей. Медианы сроков консолидации зон остеотомии варьируют от 6 до 8 нед. Максимальные сроки консолидации костей предплечья в группе остеотомий через зону синостоза статистически значимо (р = 0,024) выше в сравнении с группой остеотомий обеих костей предплечья. Несмотря на то, что целевое положение предплечья достигнуто во всех случаях, количество осложнений в группе проксимальных остеотомий статистически значимо отличалось (p0,01). Шансы развития нейроваскулярных осложнений в 20,5 раз выше в группе пациентов, которым выполняли остеотомию через зону синостоза (95% ДИ: 2,7155,6). Заключение. Проблема хирургического лечения детей с ВРУС в мировой медицинской практике, несмотря на широкий спектр предложенных методик, остается актуальной. Разработка алгоритма определения необходимости хирургического лечения и его методики требует дальнейшего проведения исследований высокого качества

CO oxidation activity of Pt/CeO2 catalysts below 0ºC: Platinum loading effects

Reducing the operating temperature of oxidation catalysts is important for designing energy efficient processes, extending catalyst lifetime, and abating pollutants, especially in cold climates. Herein, high CO oxidation activity at sub-ambient temperatures is reported for Pt/CeO2 catalysts with high content of Pt in the form of dispersed Pt2+ and Pt4+ centers. Whereas the reference 1 wt%Pt catalyst was active for CO oxidation only above 100ᵒC, the 8 and 20 wt%Pt catalysts converted 60 and 90 % of CO, respectively, below 0ᵒC. Ionic platinum was shown to facilitate oxygen release from ceria and lower the light-off temperature of the reaction occurring through the Mars-van-Krevelen mechanism. However, the remarkable activity observed at sub-ambient temperatures for the ≥8 wt%Pt catalysts is proposed to involve O2 and CO reactants weakly adsorbed on PtOx clusters. The synergies between ionic platinum and nanostructured ceria reported in this work advance the knowledge-driven design of catalysts for low-temperature oxidation reactions

РАСПРОСТРАНЕННОСТЬ ПИЩЕВОЙ АЛЛЕРГИИ У ДЕТЕЙ В МИРОВОМ ОЧАГЕ ОПИСТОРХОЗА: ПЛАНИРОВАНИЕ И МЕТОДОЛОГИЯ ЭПИДЕМИОЛОГИЧЕСКОГО ИССЛЕДОВАНИЯ EUROPREVALL

According to numerous surveys food allergy affects up to 2–6% of population in different countries and varies due to numerous factors including the prevalence of helminths infestation. The food allergy prevalence data in Russia are based on official medical statistics. The study was performed as part of «The Prevalence, Cost and Basis of Food Allergy Across Europe» (EU funded project № FP6-2006-TTC-TU-5 Proposal 045879 EuroPrevall). The aim is to create the concept of food allergy in children in opisthorchiasis endemic area based on epidemiological study of the prevalence, risk factors and clinical features. The main objective of the study will be the working out of the food safety regulations. This article describes the study design and its methodology. Согласно данным ряда исследователей, распространенность пищевой аллергии в мире составляет 2–6%, варьируя в зависимости от многочисленных факторов, включая пораженность населения гельминтными инвазиями. Сведения о распространенности пищевой аллергии в России основаны на данных официальной статистики. Настоящая работа выполнена в рамках «Исследования распространенности, социально-экономического значения и основ пищевой аллергии в Европе» («The Prevalence, Cost and Basis of Food Allergy Across Europe»; грант VI рамочной программы Евросоюза № FP6-2006-TTC-TU-5 Proposal 045879 EuroPrevall). Цель исследования состоит в формулировке новой концепции пищевой аллергии у детей в мировом очаге описторхоза на основании эпидемиологического исследования распространенности, факторов риска, клинических особенностей болезни, а также в создании научной базы для разработки регламентов безопасности продуктов питания. Статья посвящена вопросам планирования и методологии исследования.

Gamma-ray families with halos: Main characteristics and possibilities of using them to estimate the p+He fraction in the mass composition of cosmic rays at energies 1–100 PeV

Characteristics of γ-ray families with halos (XREC, Pamir) and data of experiments with EAS are analyzed to estimate the proton and helium (p+He) fractions in the primary cosmic radiation at E0 = 1–100 PeV. It is shown that at energies E0 ∼ 1–100 PeV the fraction of p+He remains significant, namely, the fraction of p+He is near 40% at E0 = 10 PeV

Observation Of Very High Energy Cosmic-ray Families In Emulsion Chambers At High Mountain Altitudes (i)

Characteristics of cosmic-ray hadronic interactions in the 1015 - 1017 eV range are studied by observing a total of 429 cosmic-ray families of visible energy greater than 100 TeV found in emulsion chamber experiments at high mountain altitudes, Chacaltaya (5200 m above sea level) and the Pamirs (4300 m above sea level). Extensive comparisons were made with simulated families based on models so far proposed, concentrating on the relation between the observed family flux and the behaviour of high-energy showers in the families, hadronic and electromagnetic components. It is concluded that there must be global change in characteristics of hadronic interactions at around 1016 eV deviating from thise known in the accelerator energy range, specially in the forwardmost angular region of the collision. A detailed study of a new shower phenomenon of small-pT particle emissions, pT being of the order of 10 MeV/c, is carried out and its relation to the origin of huge "halo" phenomena associated with extremely high energy families is discussed as one of the possibilities. General characteristics of such super-families are surveyed. © 1992.3702365431Borisov, (1981) Nucl. Phys., 191 BBaybrina, (1984) Trudy FIAN 154, p. 1. , [in Russian], Nauka, MoscowLattes, Hadronic interactions of high energy cosmic-ray observed by emulsion chambers (1980) Physics Reports, 65, p. 151Hasegawa, ICR-Report-151-87-5 (1987) presented at FNAL CDF Seminar, , Inst. for Cosmic Ray Research, Univ. of TokyoCHACALTAYA Emulsion Chamber Experiment (1971) Progress of Theoretical Physics Supplement, 47, p. 1Yamashita, Ohsawa, Chinellato, (1984) Proc. 3rd Int. Symp. on Cosmic Rays and Particle Physics, p. 30. , Tokyo, 1984, Inst. for Cosmic Ray Research, Univ. of Tokyo(1984) Proc. 3rd Int. Symp. on Cosmic Rays and Particle Physics, p. 1. , Tokyo, 1984Baradzei, (1984) Proc. 3rd Int. Symp. on Cosmic Rays and Particle Physics, p. 136. , Tokyo, 1984Yamashita, (1985) J. Phys. Soc. Jpn., 54, p. 529Bolisov, (1984) Proc. 3rd Int. Symp. on Cosmic rays and Particle Physics, p. 248. , Tokyo, 1984, Inst. for Cosmic Ray Research, Univ. of TokyoTamada, Tomaszewski, (1988) Proc. 5th Int. Symp. on Very High Energy Cosmic-Ray Interactions, p. 324. , Lodz, 1988, Inst. for Cosmic Ray Research, Univ. of Tokyo, PolandHasegawa, (1989) ICR-Report-197-89-14, , Inst. for Cosmic Ray Research, Univ. of TokyoCHACALTAYA Emulsion Chamber Experiment (1971) Progress of Theoretical Physics Supplement, 47, p. 1Okamoto, Shibata, (1987) Nucl. Instrum. Methods, 257 A, p. 155Zhdanov, (1980) FIAN preprint no. 45, , Lebedev Physical Institute, MoscowSemba, Gross Features of Nuclear Interactions around 1015eV through Observation of Gamma Ray Families (1983) Progress of Theoretical Physics Supplement, 76, p. 111Nikolsky, (1975) Izv. Akad. Nauk. USSR Ser. Fis., 39, p. 1160Burner, Energy spectra of cosmic rays above 1 TeV per nucleon (1990) The Astrophysical Journal, 349, p. 25Takahashi, (1990) 6th Int. Symp. on Very High Energy Cosmic-ray Interactions, , Tarbes, FranceRen, (1988) Phys. Rev., 38 D, p. 1404Alner, The UA5 high energy simulation program (1987) Nuclear Physics B, 291 B, p. 445Bozzo, Measurement of the proton-antiproton total and elastic cross sections at the CERN SPS collider (1984) Physics Letters B, 147 B, p. 392Wrotniak, (1985) Proc. 19th Cosmic-Ray Conf. La Jolla, 1985, 6, p. 56. , NASA Conference Publication, Washington, D.CWrotniak, (1985) Proc. 19th Cosmic-Ray Conf. La Jolla, 1985, 6, p. 328. , NASA Conference Publication, Washington, D.CMukhamedshin, (1984) Trudy FIAN, 154, p. 142. , Nauka, Moscow, [in Russian]Dunaevsky, Pluta, Slavatinsky, (1988) Proc. 5th Int. Symp. on Very High Energy Cosmic-Ray Interactions, p. 143. , Lodz, 1988, Inst. of Physics, Univ. of Lodz, PolandKaidalov, Ter-Martirosyan, (1987) Proc. 20th Int. Cosmic-Ray Conf., Moscow, 1987, 5, p. 141. , Nauka, MoscowShabelsky, (1985) preprints LNPI-1113Shabelsky, (1986) preprints LNPI-1224, , Leningrad [in Russian]Hillas, (1979) Proc. 16th Int. Cosmic-Ray Conf., Kyoto, 6, p. 13. , Inst. for Cosmic Ray Research, Univ. of TokyoBorisov, (1987) Phys. Lett., 190 B, p. 226Hasegawa, Tamada, (1990) 6th Int. Symp. on Very High Energy Cosmic-Ray Interactions, , Tarbes, FranceSemba, Gross Features of Nuclear Interactions around 1015eV through Observation of Gamma Ray Families (1983) Progress of Theoretical Physics Supplement, p. 111Ren, (1988) Phys. Rev., 38 D, p. 1404Dynaevsky, Zimin, (1988) Proc. 5th Int. Symp. on Very High Energy Cosmic-Ray Interaction, p. 93. , Lodz, 1988, Inst. of Physics, Univ. of Lodz, PolandDynaevsky, (1990) Proc. 6th Int. Symp. on Very High Energy Cosmic-Ray Interactions, , Tarbes, France(1989) FIAN preprint no. 208, , Lebedev Physical Institute, Moscow(1990) Proc. 21st Int. Cosmic-Ray Conf., Adelaide, 8, p. 259. , Dept. Physics and Mathematical Physics, Univ. of Adelaide, AustraliaHasegawa, (1990) ICR-Report-216-90-9, , Inst. for Cosmic-Ray Research, Univ. of TokyoTamada, (1990) Proc. 21st Int. Cosmic-Ray Conf., Adelaide, 1990, 8. , Dept. Physics and Mathematical Physics, Univ. of Adelaide, AustraliaTamada, (1990) ICR-Report-216-90-9(1981) Proc. 17th Int. Cosmic-Ray Conf., Paris, 5, p. 291(1990) Proc. Int. Cosmic-Ray Conf., Adelaide, 1990, 8, p. 267. , Dept. Physics and Mathematical Physics, Univ. of Adelaide, Australia(1989) Inst. Nucl. Phys. 89-67/144, , preprint, Inst. Nucl. Phys., Moscow State UnivSmilnova, (1988) Proc. 5th Int. Sym. on Very High Energy Cosmic-Ray Interactions, p. 42. , Lodz, 1988, Inst. of Physics, Univ. of Lodz, PolandGoulianos, (1986) Proc. Workshop of Particle Simulation at High Energies, , University of Wisconsin, Madison, USAIvanenko, (1983) Proc. 18th Int. Cosmic-Ray Conf., Bangalore, 1983, 5, p. 274. , Tata Inst. Fundamental Research, Bombay, IndiaIvanenko, (1984) Proc. Int. Symp. on Cosmic-Rays and Particle Physics, p. 101. , Tokyo, 1984, Inst. for Cosmic Ray Research, Univ. of Tokyo(1988) 5th Int. Symp. on Very High Energy Cosmic-Ray Interactions, p. 180. , Lodz, 1988, Inst. of Physics, Univ. of Lodz, Poland(1990) Proc. 21st Int. Cosmic-Ray Conf., Adelaide, 1990, 8, p. 251. , Dept. Physics and Mathematical Physics, Univ. of Adelaide, Australia(1991) Izv. AN USSR No. 4, , to be publishedNikolsky, Shaulov, Cherdyntseva, (1990) FIAN preprint no. 140, , Lebedev Physical Institute, Moscow, [in Russian](1987) Proc. 20th Int. Cosmic-Ray Conf., Moscow, 1987, 5, p. 326. , Nauka, Mosco

RESOURCE QS WITH THE REQUIREMENTS COPYING

In this paper a resource queueing system with the Poisson arrival process, an arbitrary service time distribution and the requirements copying at the second phase is considered. To obtain the explicit expression for the stationary probability distribution describing the process of the total volume of the occupied resource in the system, the dynamic screening method is applied

Orbital lesion (pseudotumor and dacryoadenitis) is a manifestation of systemic sarcoidosis

E.A.&nbsp;Burylova, L.A.&nbsp;Mamaeva, A.S.&nbsp;Berdnikova, O.K.&nbsp;Fedorova Ural Scientific Research Institute of Phtysiopulmonology — Branch of the National Medical Research Center of Phtysiopulmonology, Yekaterinburg, Russian Federation Abstract Ocular manifestations of systemic sarcoidosis may emerge at any disease stage. Ocular sarcoidosis is typically characterized by uveitic presentations that predominantly involve the choroid of anterior eye segment. However, orbital pseudotumor, dacryoadenitis, and other rare presentations (optic neuritis, dacryocystitis etc.) also occur in sarcoidosis. Threatened vision loss and poor quality of life are the reasons to prescribe systemic steroids in generalized sarcoidosis. Chest CT is required to identify respiratory diseases when sarcoidosis manifests as uveitis or granulomatous orbital inflammation. Multidisciplinary diagnostic and treatment approach to suspected sarcoidosis provides timely verified diagnosis and management strategy. This paper addresses case report of systemic sarcoidosis in a 34-year-old man. The initial manifestation was vision loss and left orbital pseudotumor. The enlarged subclavian lymph node and its biopsy were suspicious of granulomatous inflammation. Chest CT identified disseminated pulmonary lesions and intrathoracic lymphadenopathy that are typical of sarcoidosis. The results of multidisciplinary examina tions verified systemic sarcoidosis. Systemic steroids resulted in clinical and radiological improvement and medicinal regression of the disease. Keywords: sarcoidosis, orbital pseudotumor, dacryoadenitis, adenopathy, computed tomography, multidisciplinary approach. For citation: Burylova E.A., Mamaeva L.A., Berdnikova A.S., Fedorova O.K. Orbital lesion (pseudotumor and dacryoadenitis) is a manifestation of systemic sarcoidosis. Russian Journal of Clinical Ophthalmology. 2021;21(1):40–44. DOI: 10.32364/2311-7729-2021-21-1-40-44. <br

ОЦЕНКА ДИНАМИКИ СТОЙКОЙ ЭРИТЕМЫ НА КОЖЕ ЛИЦА У ПАЦИЕНТОВ, ПРИНИМАЮЩИХ ГИПОТЕНЗИВНУЮ ТЕРАПИЮ B - АДРЕНОБЛОКАТОРАМИ И НЕПРЯМЫМИ АНТИКОАГУЛЯНТАМИ В СРАВНЕНИИ С ТЕРАПИЕЙ КОМБИНИРОВАННЫМ ПРЕПАРАТОМ ЭКСФОРЖ

Relevance: the Observations showed that vascular skin changes characterize patients in the combined antihypertensive therapy with β-blockers, vasodilators and indirect anticoagulants. The pharmacotherapy of patients receiving antihypertensive therapy, directly affects the physiological parameters of the skin and the formation of rosacea.Наблюдения показали, что сосудистые изменения на коже лица характерны для пациентов, получающих в составе комплексной гипотензивной терапии β-адреноблокаторы, вазодилятаторы и непрямые антикоагулянты. Показатели коагулограммы и характер фармакотерапии пациентов, получающих гипотензивную терапию, напрямую влияют на физиометрические показатели кожи и формирование розацеа[1]