Soft Pomeron in light of the LHC correlated data

The LHC has released precise measurements of elastic proton-proton scattering that provide a unique constraint on the asymptotic behavior of the scattering amplitude at high energies. Recent reanalyses of part of these data indicate that the central values of some forward quantities would be different than initially observed. We introduce correlation information between the original and the reanalyzed data sets in a way suitable for a global fitting analysis of all data. The careful treatment of correlated errors leads to much less stringent limits on the $\rho$ uncertainty and sets up the stage for describing the forward data using a scattering amplitude dominated by only crossing-even terms. In the light of these correlated data we determine the parameters of the soft Pomeron from the Regge theory. We use Born-level and eikonalized amplitudes. In the Born-level case we estimate the contribution of the double Pomeron exchange, while in the latter case we investigate the role of the eikonalization in both the one- and two-channel models. The role of the proton-Pomeron vertex form and of the nearest $t$-channel singularity in the Pomeron trajectory receives particular attention. We discuss the implications of our results and present predictions for the total cross section and the $\rho$ parameter in proton-proton collisions at LHC and cosmic ray energies.Comment: 17 pages, 6 figures, 5 tables, minor typos fixed. Version to be published in Phys. Rev. D. arXiv admin note: text overlap with arXiv:1908.0104

Nonperturbative gluon exchange in pppp elastic scattering at TeV energies

We investigate the two-gluon-exchange model of the Pomeron using nonperturbative gluon propagators characterized by a dynamical mass scale. We present the results for an analysis of the available $pp$ differential cross section data at TeV energies which accounts for dynamical gluon masses obtained from a non-linear version of the Schwinger-Dyson equations. We show that our two-gluon exchange model gives a very good description of the LHC data, provided we demand the Reggeization of the scattering amplitude and make a suitable choice for the convolution of proton wave functions.Comment: 9 pages, 6 figures, 2 tables, text improved, references added. Version to be published in Phys. Rev.

Frequency of visualization of celiac ganglia by endoscopic ultrasound and its potential in assessing neural invasion in patients with pancreatic lesions

AbstractBackgroundCeliac ganglia (CG) can be seen by endoscopic ultrasound; they play an important role in pain management and are a potential site for extrapancreatic tumor neural invasion.AimsTo evaluate the frequency of CG visualization during endoscopic ultrasound examination and to evaluate the feasibility of this technique to identify extrapancreatic tumor neural invasion in patients with pancreatic lesions.MethodsWe retrospectively reviewed all endoscopic ultrasound studies performed between November 2007 and June 2010. Images of the celiac region were presented to an endosonographer, who reported the presence or absence of CG.ResultsWe included 31 cases. CG were identified in 14 (45%) cases. Average size was 10mm (range 4-25mm) by±1mm (range 1-7mm). In 2 cases, fine needle aspiration biopsy was performed and reported nerve cell bodies; in one case malignant cells were seen.ConclusionsCG were identified in 45% of the cases. Fine needle aspiration biopsy can detect unanticipated extrapancreatic tumor neural invasion in pancreatic malignancies

Análisis de la relevancia y factibilidad de indicadores de calidad en las unidades de nutrición

Introducción: La evaluación de la calidad en las actividades sanitarias exige la elección de unos indicadores acordes con los resultados que queremos medir. De todos los posibles, debemos priorizar aquellos que nos permitan obtener la información más relevante sin sobrecargar el trabajo habitual de nuestras Unidades. Objetivo: Conocer la opinión de los socios de SENPE respecto a la relevancia y la viabilidad del uso de una selección de indicadores de calidad para su aplicación en nutrición clínica. Métodos: Encuesta remitida mediante correo electrónico a los socios de SENPE solicitando a los mismos su opinión sobre 12 indicadores de calidad, valorándose cada uno en cuanto a su relevancia y factibilidad de la aplicación en su medio. Resultados: Contestaron 40 encuestados de 40 centros diferentes de 12 comunidades autónomas. En general, los indicadores fueron considerados más relevantes que factibles. Los indicadores mejor puntuados fueron: “identificación en las bolsas de nutrición artificial”, “posición semi-incorporada del paciente con nutrición enteral por sonda nasogástrica” y “protocolos clínicos básicos”. Considerando los indicadores por grupos (de estructura, proceso o resultado) los mejor valorados fueron: “identificación del paciente en las bolsas de nutrición artificial” (estructura), “posición semi-incorporada” y “protocolos clínicos básicos” (proceso), y “cumplimiento del objetivo calórico” (resultado). Conclusión: Los resultados de la encuesta permiten seleccionar indicadores prioritarios para su aplicación en las Unidades de NutriciónIntroduction: The quality assessment in health activities requires the choice of indicators in line with the results we want to measure. Of all possible, we should prioritize those that allow us to obtain the most relevant information without overloading the regular work of our units. Objective: To determine the opinion of the members of SENPE regarding the relevance and feasibility of using a selection of quality indicators designed for use in clinical nutrition. Methods: E-mail survey sent to members of SENPE asking them their views on 12 quality indicators, evaluating each in terms of their relevance and feasibility of implementation in their environment. Results: 40 respondents answered from 40 centers in 12 different regions. In general, the indicators were considered more relevant than feasible. The indicators best rated were: “identification in artificial nutrition bags, “semi-recumbent position in patient with nasogastric tube feeding” and “basic clinical protocols”. Considering the type of indicator: “patient identification in the bags of artificial nutrition (structure),” a semi-incorporated “and” basic clinical protocols (process), and “fulfillment of the caloric goal” (result). Conclusion: The results of the survey can make a selection of indicators that could be considered for first-line introduction in a Nutrition Uni

Consenso mexicano sobre probióticos en gastroenterología

Introducción: El uso de los probióticos es común en la práctica clínica. Existe un número signi-ficativo de estudios que apoyan la eficacia de los probióticos en algunos trastornos digestivos.Sin embargo, el desconocimiento de la evidencia científica y las diferentes presentaciones ycomposiciones microbianas de los probióticos disponibles dificultan su prescripción.Objetivo: Proveer al clínico de una revisión consensuada sobre los probióticos y recomendacio-nes de su uso en gastroenterología.Material y métodos: Se seleccionaron los ensayos clínicos controlados, metaanálisis y revisio-nes sistemáticas publicados hasta 2015, usando los términos MESH: probiotics, gastrointestinaldiseases, humans, adults and children. Se utilizó la metodología Delphi. Diecisiete gastroente-rólogos de adultos y 12 de ni˜nos elaboraron enunciados los cuales fueron votados hasta obteneracuerdo > 70%. Para cada enunciado se evaluó el nivel de evidencia basado en el sistema GRADE.Resultados y conclusiones: Se generaron 11 enunciados sobre conceptos generales de probió-ticos y 27 enunciados sobre uso de probióticos en enfermedades gastrointestinales tanto enni˜nos como en adultos. El grupo de consenso recomienda el uso de probióticos en las siguientescondiciones clínicas: prevención de la diarrea asociada a antibióticos, tratamiento de la diarreaaguda infecciosa, prevención de infección por Clostridium difficile y enterocolitis necrosante,para disminuir los eventos adversos de la terapia de erradicación del Helicobacter pylori, elalivio de los síntomas del síndrome de intestino irritable, en el estre˜nimiento funcional deladulto, para inducir y mantener la remisión en pacientes con colitis ulcerosa crónica idiopáticay pouchitis, y en la encefalopatía hepática oculta y manifiesta.© 2016 Asociaci´on Mexicana de Gastroenterolog´ıa. Publicado por Masson Doyma M´exico S.A.Este es un art´ıculo Open Access bajo la licencia CC BY-NC-ND (http://creativecommons.org/licenses/by-nc-nd/4.0/). ASTRACT Introduction: Probiotics are frequently prescribed in clinical practice. Their efficacy in treatinggastrointestinal disorders is supported by a significant number of clinical trials. However, thecorrect prescription of these agents is hampered due to a lack of knowledge of the scientificevidence and to the different presentations and microbial compositions of the probiotics thatare currently available.Aim: To provide the clinician with a consensus review of probiotics and recommendations fortheir use in gastroenterology.Materials and methods: Controlled clinical trials, meta-analyses, and systematic reviewspublished up to 2015 were selected, using the MESH terms: probiotics, gastrointestinal diseases,humans, adults, AND children. The Delphi method was employed. Eighteen gastroenterologiststreating adult patients and 14 pediatric gastroenterologists formulated statements that werevoted on until agreement > 70% was reached. The level of evidence based on the GRADE systemwas evaluated for each statement.Results and conclusions: Eleven statements on the general concepts of probiotics and 27 sta-tements on the use of probiotics in gastrointestinal diseases in both adults and children wereformulated. The consensus group recommends the use of probiotics under the following clini-cal conditions: the prevention of diarrhea associated with antibiotics, the treatment of acuteinfectious diarrhea, the prevention of Clostridium difficile infection and necrotizing enteroco-litis, the reduction of adverse events from Helicobacter pylori eradication therapy, relief fromirritable bowel syndrome symptoms, the treatment of functional constipation in the adult, and the induction and maintenance of remission in patients with ulcerative colitis and pouchitis,and the treatment of covert and overt hepatic encephalopathy.© 2016 Asociaci´on Mexicana de Gastroenterolog´ıa. Published by Masson Doyma M´exico S.A. Thisis an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)

A922 Sequential measurement of 1 hour creatinine clearance (1-CRCL) in critically ill patients at risk of acute kidney injury (AKI)

Meeting abstrac

Role of age and comorbidities in mortality of patients with infective endocarditis

[Purpose]: The aim of this study was to analyse the characteristics of patients with IE in three groups of age and to assess the ability of age and the Charlson Comorbidity Index (CCI) to predict mortality. [Methods]: Prospective cohort study of all patients with IE included in the GAMES Spanish database between 2008 and 2015.Patients were stratified into three age groups:<65 years,65 to 80 years,and ≥ 80 years.The area under the receiver-operating characteristic (AUROC) curve was calculated to quantify the diagnostic accuracy of the CCI to predict mortality risk. [Results]: A total of 3120 patients with IE (1327 < 65 years;1291 65-80 years;502 ≥ 80 years) were enrolled.Fever and heart failure were the most common presentations of IE, with no differences among age groups.Patients ≥80 years who underwent surgery were significantly lower compared with other age groups (14.3%,65 years; 20.5%,65-79 years; 31.3%,≥80 years). In-hospital mortality was lower in the <65-year group (20.3%,<65 years;30.1%,65-79 years;34.7%,≥80 years;p < 0.001) as well as 1-year mortality (3.2%, <65 years; 5.5%, 65-80 years;7.6%,≥80 years; p = 0.003).Independent predictors of mortality were age ≥ 80 years (hazard ratio [HR]:2.78;95% confidence interval [CI]:2.32–3.34), CCI ≥ 3 (HR:1.62; 95% CI:1.39–1.88),and non-performed surgery (HR:1.64;95% CI:11.16–1.58).When the three age groups were compared,the AUROC curve for CCI was significantly larger for patients aged <65 years(p < 0.001) for both in-hospital and 1-year mortality. [Conclusion]: There were no differences in the clinical presentation of IE between the groups. Age ≥ 80 years, high comorbidity (measured by CCI),and non-performance of surgery were independent predictors of mortality in patients with IE.CCI could help to identify those patients with IE and surgical indication who present a lower risk of in-hospital and 1-year mortality after surgery, especially in the <65-year group