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Predictors of right atrial dilatation and long-term function after right ventricular outflow tract surgical repair: Quantification of restrictive physiology matters

Right diastolic dysfunction; Right atrium function; Restrictive physiologyDisfunción diastólica derecha; Función de la aurícula derecha; Fisiología restrictivaDisfunció diastòlica dreta; Funció de l'aurícula dreta; Fisiologia restrictivaRight ventricular (RV) diastolic dysfunction in patients with a surgically-repaired RV outflow tract (RVOT) obstruction merits further studies. Right atrial (RA) dilation and function may be related to (RV) diastolic dysfunction in this setting. The end-diastolic forward flow (EDFF) in the pulmonary artery (PA) has been suggested as a non-invasive marker of poor RV compliance, however, there is controversy regarding its true significance; EDFF quantification may help elucidate this controversy. Objective to study predictors of RA enlargement and dysfunction in patients with a surgically-repaired RVOT obstruction and its relationship with quantitative EDFF. Methods In 81 consecutive patients (mean age: 37.5 (±7) years), transthoracic echocardiography (Echo) and cardiac magnetic resonance (CMR) were performed. Echo parameters: RA size (indexed RA area (iRAA)), RA function (RA global strain (RAGS)) and maximum EDFF velocity-time integral (VTI-EDFF) obtained during a whole respiratory cycle. CMR-indexed RA area (imRAA) was also obtained. Patients were divided into three groups according to iRAA, imRAA and RAGS; bivariate analysis was performed. A multivariate model was then applied using variables that were found to be statistically significant in the bivariate analysis. Results Upon multivariate analysis, higher VTI-EDFF values and the presence of significant tricuspid regurgitation proved to be independent factors associated with increased iRAA and imRAA and lower RAGS, whereas RV volumes, function and pulmonary regurgitant fraction were not. Conclusion VTI-EDFF linearly correlated with the degree of RA dilation and deformation; EDFF quantification as against qualitative assessment may be considered a non-invasive tool for diastolic RV dysfunction

Non-Standard Errors

In statistics, samples are drawn from a population in a data-generating process (DGP). Standard errors measure the uncertainty in estimates of population parameters. In science, evidence is generated to test hypotheses in an evidence-generating process (EGP). We claim that EGP variation across researchers adds uncertainty: Non-standard errors (NSEs). We study NSEs by letting 164 teams test the same hypotheses on the same data. NSEs turn out to be sizable, but smaller for better reproducible or higher rated research. Adding peer-review stages reduces NSEs. We further find that this type of uncertainty is underestimated by participants

Search for dark matter produced in association with bottom or top quarks in √s = 13 TeV pp collisions with the ATLAS detector

A search for weakly interacting massive particle dark matter produced in association with bottom or top quarks is presented. Final states containing third-generation quarks and miss- ing transverse momentum are considered. The analysis uses 36.1 fb−1 of proton–proton collision data recorded by the ATLAS experiment at √s = 13 TeV in 2015 and 2016. No significant excess of events above the estimated backgrounds is observed. The results are in- terpreted in the framework of simplified models of spin-0 dark-matter mediators. For colour- neutral spin-0 mediators produced in association with top quarks and decaying into a pair of dark-matter particles, mediator masses below 50 GeV are excluded assuming a dark-matter candidate mass of 1 GeV and unitary couplings. For scalar and pseudoscalar mediators produced in association with bottom quarks, the search sets limits on the production cross- section of 300 times the predicted rate for mediators with masses between 10 and 50 GeV and assuming a dark-matter mass of 1 GeV and unitary coupling. Constraints on colour- charged scalar simplified models are also presented. Assuming a dark-matter particle mass of 35 GeV, mediator particles with mass below 1.1 TeV are excluded for couplings yielding a dark-matter relic density consistent with measurements

Revista de educación

Se analiza la lucha entre dos tesis opuestas que dividía a la sociedad belga con respecto a su educación. Los antecedentes se establecían en torno a las elecciones generales de 1954, cuyo triunfo corrió a cargo del ala izquierdista, socialista y liberal del país, desplazando a la mayoría social-cristiana que hasta aquel momento había gobernado. La guerra escolar era una extensión de las diferencias que había entre las dos fuerzas políticas y sobre todo, giraba en torno a la educación religiosa que había existido hasta la fecha y que los socialistas, querían eliminar y convertir en una educación laica. Algunas de las acciones que el nuevo gobierno llevó a cabo fueron: reducir un tercio los subsidios a la enseñanza técnica conocida; abrogarse a la Ley de 17 de diciembre del 1952 que otorgaba subsidios a la enseñanza media; suprimir las 'Comisiones Mixtas' como la 'Comisión Nacional de Enseñanza' y la 'Comisión Nacional de Litigios' y dar prioridad para ocupar puestos docente a los titulares de un diploma oficial sobre los titulares de un diploma libre.Ministerio Educación CIDEBiblioteca de Educación del Ministerio de Educación, Cultura y Deporte; Calle San Agustín, 5 - 3 Planta; 28014 Madrid; Tel. +34917748000; [email protected]

Revista de educación

Se comenta el panorama escolar que existía en Bélgica a mediados de los años cincuenta, centrada en un problema de convivencia entre las dos grandes masas raciales, culturales y políticas, en definitiva, en que se dividía la nación, los liberales-socialistas y los social-cristianos. Además, se comentan algunos aspectos de la ley educativa belga llamada 'Ley Collard'.Ministerio Educación CIDEBiblioteca de Educación del Ministerio de Educación, Cultura y Deporte; Calle San Agustín, 5 - 3 Planta; 28014 Madrid; Tel. +34917748000; [email protected]

Revista de educación

Se comenta el libro 'Teoría de la expresión poética' de Bousuño, trabajo en el que el autor trata de la didáctica de la literatura, del arduo trabajo que para el profesor es la enseñanza de la literatura y de lo importante y difícil que es crear un sentimiento de afinidad hacia la poesía del alumnado.Ministerio Educación CIDEBiblioteca de Educación del Ministerio de Educación, Cultura y Deporte; Calle San Agustín, 5 - 3 Planta; 28014 Madrid; Tel. +34917748000; [email protected]