Doença hepática gordurosa não alcoólica e cirurgia bariátrica: uma revisão abrangente

sem informaçãoNonalcoholic fatty liver disease (NAFLD) has been increasingly diagnosed worldwide and is now recognized as a source of public health concern. It comprises a wide spectrum of histological features that range from simple steatosis to severe forms of fibros1353277295sem informaçãosem informaçãosem informaçã

Local freedom in the gravitational field revisited

Maartens {\it et al.}\@ gave a covariant characterization, in a 1+3 formalism based on a perfect fluid's velocity, of the parts of the first derivatives of the curvature tensor in general relativity which are ``locally free'', i.e. not pointwise determined by the fluid energy momentum and its derivative. The full decomposition of independent curvature derivative components given in earlier work on the spinor approach to the equivalence problem enables analogous general results to be stated for any order: the independent matter terms can also be characterized. Explicit relations between the two sets of results are obtained. The 24 Maartens {\it et al.} locally free data are shown to correspond to the $\nabla \Psi$ quantities in the spinor approach, and the fluid terms are similarly related to the remaining 16 independent quantities in the first derivatives of the curvature.Comment: LaTeX. 13 pp. To be submitted to Class. Quant. Gra

Predictors for weight loss failure following roux-en-y gastric bypass

Weight loss failure is a widely recognized occurrence following Roux-en-Y gastric bypass. This study aims to identify predictors associated with weight loss failure. It is a retrospective cohort which enrolled 187 subjects who underwent RYGB. Comparisons were made between patients' features at baseline and 24 months after surgery. A weight loss failure rate of 11.2% was found. Advanced age and diabetes were statistically associated with failure. The results found were close to previous reports. As weight loss failure represents an important concern, there is the possibility to perform revisional surgeries, which may emphasize the restrictive or malabsorptive characteristics of RYGB, leading to varied results. It is reinforced that weight loss cannot be used as the unique outcome to evaluate the success of surgery.Weight loss failure is a widely recognized occurrence following Roux-en-Y gastric bypass. This study aims to identify predictors associated with weight loss failure. It is a retrospective cohort which enrolled 187 subjects who underwent RYGB. Comparisons514328330sem informaçãosem informaçã

Influence of type 2 diabetes mellitus on liver histology among morbidly obese individuals: a cross-sectional study

Nonalcoholic fatty liver disease (NAFLD) has become a public health concern. It encompasses a wide spectrum of histological abnormalities and has close relationships with insulin resistance and type 2 diabetes mellitus (T2DM). This study sought to compare13417983sem informaçãosem informaçã

Modelo de elementos finitos de la columna lumbar

En este trabajo se describe un modelo de Elementos Finitos de la columna lumbar humana. El objetivo buscado es la utilización del mismo como herramienta de investigación aplicada a la cirugía ortopédica de columna lumbar. Para conseguir este objetivo se ha elaborado un modelo no lineal y paramétrico de la columna lumbar completa, el cual puede modificarse con facilidad tanto en su geometría como en sus características mecánicas de modo que puedan reflejarse tanto distintas alteraciones segmentarias como diversas técnicas de fijación. También se expone la contrastación del modelo, realizada a partir de resultados experimentales recogidos de la literatura sobre el tema.Peer Reviewe

Epicrania fugax with backward radiation: clinical characteristics of nine new cases

Epicrania fugax (EF) is a novel syndrome, described as a paroxysmal and brief head pain, starting in posterior cranial regions and rapidly spreading forward ipsilateral eye, nose or forehead. Two patients with comparable clinical features stemming from frontal scalp to ipsilateral posterior regions have been recently described and proposed as backward radiation epicrania fugax (BREF). We report a new series of nine BREF and compare their clinical characteristics with 18 forward radiation EF (FREF). Since first description of BREF in February 2010 we have assessed nine patients (four males, five females) with this clinical picture at an outpatient headache office in a Tertiary Hospital. Comparison is established with 18 FREF patients (6 males, 12 females), attended since the publication of first series of EF in March 2008. We found no differences between BREF and FREF, respectively, in age at onset (43.4 ± 13.1 vs. 42.5 ± 17.7 years), female/male ratio (5/4 vs. 12/6), pain intensity (6.9 ± 2.1 vs. 6.8 ± 2.1 in a 0–10 visual analogical scale), duration (7.1 ± 4.9 vs. 5.7 ± 4.3 s) and frequency of episodes per day (7 ± 8.4 vs. 9.9 ± 15.4). Patients in BREF group presented less frequently interictal pain in stemming point (22.2 vs. 55.5%) and accompanying autonomic signs (33.3 vs. 55.5%), but without statistical significance in both the cases. This series reinforces the proposal of EF as a new headache variant or a new headache syndrome. Clinical picture of brief pain paroxysms starting in the anterior scalp and radiating backwards does not fit known headaches or neuralgias and might correspond to a reverse variant of EF, clinical characteristics of which are comparable to FREF

Jahl y Paszkiewicz en «Vltra» (1921-1922), dos polacos en el nacimiento de la vanguardia española

La Gran Guerra trajo a varios artistas y escritores polacos residentes en Francia a la neutral España como refugiados. A través de las colaboraciones en la revista «Vltra» (1921-1922) de los artistas polacos Wladyslaw Jahl y Marian Paszkiewicz -y también de Tadeusz Peiper-, se recupera en este artículo la memoria de un episodio poco conocido de la primera vanguardia en España: su participación en el nacimiento del Ultra. Se pone de manifiesto también la estrecha relación entre escritores y artistas plásticos en el movimiento ultraísta.Several Polish artists and writers resident in France moved to Spain as a result of the First World War. Through collaborations in the magazine «Vltra» (1921-1922) of two of these Polish artists, Wladyslaw Jahl and Marian Paszkiewicz -and also of Tadeusz Peiper- this paper recuperates a little-known aspect in the first avant-garde in Spain. The cióse relationship between writers and artists in the «ultraist» movement (early avant-garde movement in Spain) is also pointed out