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Extended criteria brain-dead organ donors:Prevalence and impact on the utilisation of livers for transplantation in brazil

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World Journal of Hepatology 2023年第2期15卷 255-264页

作者： Victoria S braga Amanda P C S boteon heloisa b paglione Rafael A A Pecora Yuri L boteon Faculdade Israelita de Ciências da Saúde Albert Einstein Hospital Israelita Albert EinsteinSão Paulo 05652-900Brazil Transplant Centre Hospital Israelita Albert EinsteinSão Paulo 05652-900Brazil

bACKGROUND Despite its association with higher postoperative morbidity and mortality,the use of extended criteria donor(ECD)livers for transplantation has increased globally due to the high demand for the *** To investigate the prevalence of ECD in donation after brain death(DbD)and its impact on organ acceptance for *** Retrospective analysis of DbD organ offers for liver transplantation between 2017 and 2020 in a high-volume transplant *** incidence of the Eurotransplant risk factors to define an ECD(ET-ECD)among DbD donors and the likelihood of organ acceptance over the years were *** relationship between organ refusal for transplantation,the occurrence,and the number of ET-ECD was assessed by simple and multiple logistic regression *** A total of 1619 organ donors were *** these,78.31%(n=1268)had at least one ET-ECD *** was an increase in the acceptance of ECD DbD organs for transplantation(1 criterion:from 23.40%to 31.60%;2 criteria:from 13.10%to 27.70%;3 criteria:From 6.30%to 13.60%).For each addition of one ETECD variable,the estimated chance of organ refusal was 64.4%higher(OR 1.644,95%CI 1.469-1.839,P165 mmol/L(P=0.310),all ET-ECD criteria increased the estimated chance of organ refusal for *** A high prevalence of ECD DbD was *** the increase in their utilisation,the presence and the number of extended donor criteria were associated with an increased likelihood of their refusal for transplantation.

关键词： Liver transplantation Extended criteria donors Donation after brain death Organ donation

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Quenched Fe moment in the collapsed tetragonal phase of Ca_(1-x)Pr_x Fe_2As_2

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Chinese Physics b 2013年第5期22卷 55-59页

作者：马龙吉高峰代佳 Saha S R Drye T paglione J 于伟强 Department of Physics Renmin University of China Center for Nanophysics and Advanced Materials Department of PhysicsUniversity of MarylandCollege Park

We report 7SAs NMR studies on single crystals of rare-earth doped iron pnictide superconductor Ca1-xPrxFe2As2. In both cases of x = 0.075, 0.15, a large increase of Vq upon cooling is consistent with the tetragonal-collapsed tetragonal structure transition. A sharp drop of the Knight shift is also seen just below the structure transition, which suggests the quenching of Fe local magnetism, and therefore offers important understanding of the collapsed tetragonal phase. At even low temperatures, the 1/75 T1 is enhanced and forms a peak at T ≈ 25 K, which may be caused by the magnetic ordering of the Pr3＋ moments or soin dynamics of mobile domain walls.

关键词： quenched Fe moment collapsed tetragonal phase iron pnictides nuclear magnetic resonance

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