Prevalence and characterization of undiagnosed arterial hypertension in the eastern zone of Mexico.

Arterial hypertension is considered a public health problem with severe consequences at an individual and public health levels. However, there is a lack of information regarding its characterization in Mexico. The objective of this study is to estimate the proportion of undiagnosed arterial hypertension (UAH) and the overall prevalence and clinical management of arterial hypertension within the Eastern Zone of Mexico. Additionally, we explore associated factors related with both UAH and uncontrolled arterial hypertension. We obtained information from the May Measure Month (MMM) 2019 study. People were asked for cardiovascular risk factors and blood pressure was measured according to the protocols of the European Society of Hypertension (ESH). Data from 5901 subjects were extracted: 76.04% from the Eastern Zone of the State of Mexico. The overall prevalence of hypertension was 32.4% (95% CI 31.2-33.6). From all subjects living with hypertension, 28.3% had UAH, 22.1% had previous diagnosis but were untreated; 29.3% were treated but had uncontrolled hypertension. Younger men adults living in the State of Michoacán had increased proportion of UAH and untreated hypertension. We observed that male sex, age, obesity, living at Michoacán were risk factors for UAH. Finally, male sex, diabetes, and living at Michoacán were related risk conditions for having uncontrolled arterial hypertension. In summary, there is a high proportion of UAH in Easter Zone of Mexico. Younger adults had higher proportion of UAH and untreated hypertension profiles. Efficient actions are required to make a timely diagnosis in the young adult population to prevent long-term complications.

The situation of infection in the elderly in Spain: a multidisciplinary opinion document / Situación de la infección en el anciano: un documento multidisciplinar de opinión

Infection in the elderly is a huge issue whose treatment usually has partial and specific approaches. It is, moreover, one of the areas where intervention can have the most success in improving the quality of life of older patients. In an attempt to give the widest possible focus to this issue, the Health Sciences Foundation has convened experts from different areas to produce this position paper on Infection in the Elderly, so as to compare the opinions of expert doctors and nurses, pharmacists, journalists, representatives of elderly associations and concluding with the ethical aspects raised by the issue. The format is that of discussion of a series of pre-formulated questions that were discussed by all those present. We begin by discussing the concept of the elderly, the reasons for their predisposition to infection, the most frequent infections and their causes, and the workload and economic burden they place on society. We also considered whether we had the data to estimate the proportion of these infections that could be reduced by specific programmes, including vaccination programmes. In this context, the limited presence of this issue in the media, the position of scientific societies and patient associations on the issue and the ethical aspects raised by all this were discussed

La infección en los ancianos es un tema enorme que suele recibir enfoques muy específicos pero parciales. Además, es una de las áreas en las que la intervención podría tener más éxito para mejorar la calidad de vida de los pacientes mayores. En un intento de dar el mayor enfoque posible a este tema, la Fundación de Ciencias de la Salud ha convocado a expertos de diferentes áreas para elaborar este documento de opinión sobre la situación de la infección en los ancianos, tratando de comparar las opiniones de médicos expertos, enfermeras, farmacéuticos, periodistas, representantes de asociaciones de ancianos y terminando con los aspectos éticos que plantea el problema. El formato es el de la discusión de una serie de preguntas preformuladas que fueron discutidas entre todos los presentes. Empezamos discutiendo el concepto de "anciano", las razones de la predisposición a la infección, las infecciones más frecuentes y sus causas, y la carga laboral y económica que suponen para la sociedad. También preguntamos si teníamos datos para estimar la proporción de estas infecciones que podrían ser reducidas por programas específicos, incluyendo programas de vacunación. En este contexto, se discutió la baja presencia de este problema en los medios de comunicación, la posición de las asociaciones científicas y de pacientes sobre el problema y los aspectos éticos que todo esto plantea

Epstein-Barr virus-associated large B-cell lymphoma transformation in marginal zone B-cell lymphoma: a series of four cases.

AIMS: To present four examples of clonally related Epstein-Barr virus (EBV)-associated large-cell transformation of marginal zone lymphoma (MZL) (of nodal, extranodal and splenic types), occurring 120, 11 and 5 months after the initial diagnosis in three instances, and concurrently in one case; and to discuss several interesting features of EBV infection. METHODS AND RESULTS: Somatic mutations were detected by use of a customised panel for next-generation sequencing and polymerase chain reaction studies of IgH in both low-grade and high-grade components of each case. In case 1, the initial biopsy of nodal MZL showed scattered EBV-positive cells, which might constitute an indication of EBV-induced progression. Case 2 showed heterogeneous EBV expression, a phenomenon attributable to loss of the EBV episomes during cell division, or to a secondary superinfection or reactivation of the virus. In case 3, p53 overexpression related to gene mutation and EBV-encoded small RNAs were identified in the same neoplastic component. In case 4, the mucosa-associated lymphoid tissue-type MZL and the high-grade component were identified concurrently in a patient previously treated with methotrexate for an autoimmune disorder. CONCLUSION: These data suggest that the presence of EBV should be added to the list of potential markers to be analysed for MZL prognosis.

Chronic obstructive pulmonary disease (COPD) in Spain and the different aspects of its social impact: a multidisciplinary opinion document / Enfermedad Pulmonar Obstructiva Crónica (EPOC) y diferentes aspectos de su impacto social: un documento multidisciplinar de opinión

Chronic obstructive pulmonary disease (COPD) is one of the most prevalent diseases in the World, and one of the most important causes of mortality and morbidity. In adults 40 years and older, it affects more than 10% of the population and has enormous personal, family and social burden. Tobacco smoking is its main cause, but not the only one, and there is probably a genetic predisposition that increases the risk in some patients. The paradigm of this disease is changing in Spain, with an increase of women that has occurred in recent years. Many of the physio pathological mechanisms of this condition are well known, but the psychological alterations to which it leads, the impact of COPD on relatives and caregivers, the limitation of daily life observed in these patients, and the economic and societal burden that they represent for the health system, are not so well-known. A major problem is the high under-diagnosis, mainly due to difficulties for obtaining, in a systematic way, spirometries in hospitals and health-care centers. For this reason, the Fundación de Ciencias de la Salud and the Spanish National Network Center for Research in Respiratory Diseases (CIBERES) have brought together experts in COPD, patients and their organizations, clinical psychologists, experts in health economics, nurses and journalists to obtain their opinion about COPD in Spain. They also discussed the scientific bibliometrics on COPD that is being carried out from the CIBERES and speculated on the future of this condition. The format of the meeting consisted in the discussion of a series of questions that were addressed by different speakers and discussed until a consensus conclusion was reached

La enfermedad pulmonar obstructiva crónica (EPOC) es una de las enfermedades más prevalentes en el mundo y una de las causas más importantes de mortalidad y morbilidad. En los adultos de más de 40 años, afecta al menos al 10% de la población y tiene una enorme carga personal, familiar y social. El tabaquismo es su principal causa, pero no la única, y probablemente existe una predisposición genética que aumenta el riesgo en algunos pacientes. El paradigma de esta enfermedad está cambiando en España, con un aumento de la incidencia en mujeres que se ha producido en los últimos años. Muchos de los mecanismos fisiopatológicos de la EPOC son bien conocidos, pero no lo son tanto las alteraciones psicológicas a las que conduce, el impacto de la enfermedad en los familiares y cuidadores, la limitación de la vida cotidiana que se observa en estos pacientes y la carga económica y social que representan para el sistema sanitario. Un problema importante es el elevado infradiagnóstico, debido principalmente a las dificultades para obtener, de forma sistemática, espirometrías en los hospitales y centros de salud. Por este motivo, la Fundación de Ciencias de la Salud y el Centro de Investigación en Enfermedades Respiratorias (CIBERES) han reunido a expertos en EPOC, pacientes y sus organizaciones, psicólogos clínicos, expertos en economía de la salud, enfermeras y periodistas para obtener su opinión sobre la EPOC en España. También se ha hablado de la bibliometría científica sobre la EPOC que se está llevando a cabo desde el CIBERES y se ha especulado sobre el futuro de esta enfermedad. El formato de la reunión consistió en la discusión de una serie de cuestiones que fueron abordadas por diferentes ponentes y discutidas hasta llegar a una conclusión consensuada

The Forbidden Region Self-Organizing Map Neural Network.

Self-organizing maps (SOMs) are aimed to learn a representation of the input distribution which faithfully describes the topological relations among the clusters of the distribution. For some data sets and applications, it is known beforehand that some regions of the input space cannot contain any samples. Those are known as forbidden regions. In these cases, any prototype which lies in a forbidden region is meaningless. However, previous self-organizing models do not address this problem. In this paper, we propose a new SOM model which is guaranteed to keep all prototypes out of a set of prespecified forbidden regions. Experimental results are reported, which show that our proposal outperforms the SOM both in terms of vector quantization error and quality of the learned topological maps.

Vaccines for the prevention of infections in adults: an opinion paper on the situation in Spain / Vacunas para la prevención de infecciones en adultos: artículo de opinión sobre la situación en España

The childhood immunization schedule is well known and generally well implemented in developed countries. For various reasons, the same is not true of vaccines aimed at preventing infections in adults, in which vaccination coverage is incomplete and generally very deficient. In order to assess the situation of adult vaccination in Spain, the Fundación de Ciencias de la Salud has brought together a series of experts in different fields, including doctors, nurses, representatives of patient associations, health managers and economists, health authorities and journalists to deal with this issue. The format was that of a round table in which a series of questions previously formulated by the coordinators were to be answered and debated. The document presented is not an exhaustive review of the topic, nor is it intended to make recommendations, but only to give a multidisciplinary opinion on topics that could be particularly debatable or controversial. The paper reviews the main vaccine-preventable adult diseases, their clinical and economic impact, the possibilities of reducing them with vaccination programmes and the difficulties in carrying them out. The role of nursing, pharmacy services, patient associations and the health administration itself in changing the current situation was discussed. Prospects for new vaccines were discussed and we speculated on the future in this field. Finally, particularly relevant ethical aspects in decision-making regarding vaccination were discussed, which must be faced by both individuals and states. We have tried to summarize, at the end of the presentation of each question, the environment of opinion that was agreed with all the members of the table

El calendario de vacunación infantil es bien conocido y generalmente bien implementado en los países desarrollados. Por varias razones, no ocurre lo mismo en el caso de las vacunas destinadas a prevenir las infecciones en adultos, en los que la cobertura vacunal es incompleta y generalmente muy deficiente. Con el fin de evaluar la situación de la vacunación de adultos en España, la Fundación de Ciencias de la Salud ha reunido a una serie de expertos en diferentes campos, incluyendo médicos, enfermeras, representantes de asociaciones de pacientes, gestores sanitarios, economistas, autoridades sanitarias y periodistas para discutir este asunto. El formato fue el de una mesa redonda en la que una serie de preguntas, formuladas previamente por los coordinadores, debían ser contestadas y debatidas. El documento presentado no es una revisión exhaustiva del tema, ni tiene por objeto hacer recomendaciones, simplemente pretende dar una opinión multidisciplinar sobre aspectos que pueden ser debatibles o controvertidos. El documento revisa las principales enfermedades de los adultos que pueden prevenirse con vacunas, su impacto clínico y económico, las posibilidades de reducirlos con los programas de vacunación y las dificultades para llevarlos a cabo. Se discutió el papel de la enfermería, la farmacia, los servicios de salud, las asociaciones de pacientes y la propia administración sanitaria para cambiar la situación actual. Se evaluaron las perspectivas para nuevas vacunas y se especuló sobre el futuro en este campo. Por último, se discutieron los aspectos éticos especialmente relevantes en la toma de decisiones con respecto a la vacunación, que deben ser afrontados tanto por los individuos como por los estados. Hemos intentado resumir, al final de la presentación de cada pregunta, la opinión que representaba el consenso de todos los miembros de la mesa

Information on nosocomial infections in the mainstream media: an opinion document / Información sobre las infecciones nosocomiales en los principales medios: un documento de opinión

This paper seeks to explore the reasons for the low impact of nosocomial infection in the mainstream media and the responsibilities of physicians and journalists in terms of this situation. To this end, a small group of 13 experts met for round-table discussions, including physicians with expertise in nosocomial infection, medical lawsuits and ethics, as well as journalists from major mainstream Spanish media outlets. The various participants were asked a series of questions prior to the meeting, which were answered in writing by one of the speakers and discussed during the meeting by the whole group, the aim being to obtain consensual conclusions for each of them. The document was subsequently reviewed, edited and forwarded to all co-authors for their agreement. The opinions expressed are the personal opinions of the participants and not necessarily those of the institutions in which they work or with which they collaborate

Este documento busca explorar las razones del bajo impacto de la infección nosocomial en los medios de comunicación tradicionales y las responsabilidades de los médicos y periodistas en esta situación. Con este fin se realizó una mesa redonda con un pequeño grupo de 13 expertos, incluidos médicos con experiencia en infecciones nosocomiales, legislación médica y ética, así como periodistas de los principales medios de comunicación españoles. Antes de la reunión, se les hicieron una serie de preguntas a los participantes, las cuales fueron respondidas por escrito por cada uno y discutidas durante la reunión por todo el grupo, con el objetivo de obtener conclusiones consensuadas para cada una de ellas. El documento fue posteriormente revisado, editado y enviado a todos los coautores para su acuerdo. Las opiniones expresadas por cada participante son propias y no necesariamente de las instituciones en las que trabajan o con las que colaboran

The Growing Hierarchical Neural Gas Self-Organizing Neural Network.

The growing neural gas (GNG) self-organizing neural network stands as one of the most successful examples of unsupervised learning of a graph of processing units. Despite its success, little attention has been devoted to its extension to a hierarchical model, unlike other models such as the self-organizing map, which has many hierarchical versions. Here, a hierarchical GNG is presented, which is designed to learn a tree of graphs. Moreover, the original GNG algorithm is improved by a distinction between a growth phase where more units are added until no significant improvement in the quantization error is obtained, and a convergence phase where no unit creation is allowed. This means that a principled mechanism is established to control the growth of the structure. Experiments are reported, which demonstrate the self-organization and hierarchy learning abilities of our approach and its performance for vector quantization applications.

Learning Topologies with the Growing Neural Forest.

In this work, a novel self-organizing model called growing neural forest (GNF) is presented. It is based on the growing neural gas (GNG), which learns a general graph with no special provisions for datasets with separated clusters. On the contrary, the proposed GNF learns a set of trees so that each tree represents a connected cluster of data. High dimensional datasets often contain large empty regions among clusters, so this proposal is better suited to them than other self-organizing models because it represents these separated clusters as connected components made of neurons. Experimental results are reported which show the self-organization capabilities of the model. Moreover, its suitability for unsupervised clustering and foreground detection applications is demonstrated. In particular, the GNF is shown to correctly discover the connected component structure of some datasets. Moreover, it outperforms some well-known foreground detectors both in quantitative and qualitative terms.

Bregman divergences for growing hierarchical self-organizing networks.

Growing hierarchical self-organizing models are characterized by the flexibility of their structure, which can easily accommodate for complex input datasets. However, most proposals use the Euclidean distance as the only error measure. Here we propose a way to introduce Bregman divergences in these models, which is based on stochastic approximation principles, so that more general distortion measures can be employed. A procedure is derived to compare the performance of networks using different divergences. Moreover, a probabilistic interpretation of the model is provided, which enables its use as a Bayesian classifier. Experimental results are presented for classification and data visualization applications, which show the advantages of these divergences with respect to the classical Euclidean distance.

Growing hierarchical probabilistic self-organizing graphs.

Since the introduction of the growing hierarchical self-organizing map, much work has been done on self-organizing neural models with a dynamic structure. These models allow adjusting the layers of the model to the features of the input dataset. Here we propose a new self-organizing model which is based on a probabilistic mixture of multivariate Gaussian components. The learning rule is derived from the stochastic approximation framework, and a probabilistic criterion is used to control the growth of the model. Moreover, the model is able to adapt to the topology of each layer, so that a hierarchy of dynamic graphs is built. This overcomes the limitations of the self-organizing maps with a fixed topology, and gives rise to a faithful visualization method for high-dimensional data.