26 research outputs found

    Enfermedad de Behcet: Manifestaciones neurológicas y psiquiátricas observadas en dos pacientes en el Hospital Nacional Dos de Mayo (Lima, Perú).

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    The neurological and psychiatric manifestations in two patients who met clinical criteria of Behcet’s disease are observed and described throughout several decades. The presence of recurrent oral and genital canker sores is illustrated with images. One of the patients developed thrombosis of the femoral vein, and erythema nodosus was present in both. The ophthalmological evaluation showed absence of uveitis in both patients, and blindness by adult monocular dystrophic maculopathy without signs of retinal vasculitis in the female. Laboratory tests on blood and cerebrospinal fluid evidenced lymphocytic pleocytosis. The patergia skin test was negative. Likewise, laboratory tests determined an absence of findings compatible with other autoimmune diseases. Throughout the evaluation period, the clinical manifestations were correlated with the findings from tomography and brain magnetic resonance magnetic. Similarly, recurrent myelitis and its correlation with the results of medular magnetic resonance imaging are explained. The evaluation and follow-up period through outpatient consultation and hospitalization was prolonged: the 73-year-old male patient, who started the disease at age 35, was followed-up for 34 years; and the 50-year-old female patient, fell ill at the age of 28 and was followed-up for 8 years. This process allowed the understanding of the different morbid factors that influenced the serious evolution of the clinical picture.Se describen las manifestaciones neurológicas y psiquiátricas de dos pacientes con características clínicas de la enfermedad de Behcet, observados a lo largo de varias décadas. Se ilustra con imágenes la presencia de aftas orales y genitales recidivantes. Uno de ellos desarrolló trombosis de la vena femoral y en ambos hubo presencia de eritema nodoso. La evaluación oftalmológica determinó ausencia de uveitis en ambos pacientes y ceguera por maculopatía distrófica monocular sin signos de vasculitis retinal en la paciente mujer. Exámenes de laboratorio en sangre y en el líquido cerebro espinal evidenciaron pleocitosis linfocítica. El test cutáneo de patergia fue negativo. Asimismo, se determinó la ausencia de hallazgos compatibles con otras enfermedades autoinmunes. Durante el periodo de evaluación se correlacionaron las manifestaciones clínicas y los hallazgos en tomografía (TM) y resonancia magnética cerebral (RMC). Se explica igualmente la mielitis recidivante y su correlato con los resultados de la resonancia magnética medular (RMM). El tiempo de evaluación y seguimiento por consulta externa y durante la hospitalización en el paciente varón (73 años), que inició la enfermedad a los 35 años, fue de 34 años; la paciente mujer (50 años, inició su enfermedad a los 28 años y fue seguida por espacio de 8 años. Este proceso permitió comprender los diferentes factores mórbidos que influyeron en la grave evolución del cuadro clínico estudiado

    Pancreatitis aguda debido a intususcepción gastroduodenal

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    Introducción: Los pólipos gástricos adenomatosos son poco frecuentes y generalmente se encuentran en el examen endoscópico de rutina. La intususcepción gastroduodenal es una com- plicación poco frecuente de los pólipos gástricos y ha sido raramente descrita como una causa de pancreatitis aguda. Caso clínico: Presentamos el caso de un varón de 68 anos ̃ el cual ingresa de urgencia con dolor abdominal, náuseas y vómitos catalogados en un inicio como pancreatitis aguda de etiología biliar; incidentalmente se descubre un pólipo gástrico pediculado intususceptado a duodeno como causa de la pancreatitis aguda. Se realizó tratamiento endoscópico de urgencia y trata- miento definitivo con cirugía abierta

    Alterations of Effective Connectivity Patterns in Mild Cognitive Impairment: An MEG Study

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    Producción CientíficaNeuroimaging techniques have demonstrated over the years their ability to characterize the brain abnormalities associated with different neurodegenerative diseases. Among all these techniques, magnetoencephalography (MEG) stands out by its high temporal resolution and noninvasiveness. The aim of the present study is to explore the coupling patterns of resting-state MEG activity in subjects with mild cognitive impairment (MCI). To achieve this goal, five minutes of spontaneous MEG activity were acquired with a 148- channel whole-head magnetometer from 18 MCI patients and 26 healthy controls. Interchannel relationships were investigated by means of two complementary coupling measures: coherence and Granger causality. Coherence is a classical method of functional connectivity, while Granger causality quantifies effective (or causal) connectivity. Both measures were calculated in the five conventional frequency bands: delta (d, 1-4 Hz), theta (q, 4-8 Hz), alpha (a, 8-13 Hz), beta (b, 13-30 Hz), and gamma (g, 30-45Hz). Our results showed that connectivity values were lower for MCI patients than for controls in all frequency bands. However, only Granger causality revealed statistically significant differences between groups (p-values < 0.05, FDR corrected Mann-Whitney U-test), mainly in the beta band. Our results support the role of MCI as a disconnection syndrome, which elicits early alterations in effective connectivity patterns. These findings can be helpful to identify the neural substrates involved in prodromal stages of dementia.This research was supported by ‘Ministerio de Economía y Competitividad’ and ‘European Regional Development Fund’ under project TEC2014-53196-R, by ‘European Commission’ and ‘European Regional Development Fund’ under project ‘Análisis y correlación entre el genoma completo y la actividad cerebral para la ayuda en el diagnóstico de la enfermedad de Alzheimer’ (‘Cooperation Programme Interreg V-A Spain-Portugal POCTEP 2014-2020’), and by ‘Consejería de Educación de la Junta de Castilla y León’ under project VA037U16. Pablo Núñez was in receipt of a ‘Promoción de empleo joven e implantación de la Garantía Juvenil en I+D+i’ grant from ‘Ministerio de Economía y Competitividad’ and University of Valladolid

    Plan estratégico de Alicorp S.A.A. del 2015 al 2025

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    En el presente documento se trata la planeación estratégica de la empresa peruana Alicorp S.A.A., organización que cuenta con operaciones a nivel local y en diversos países de Sudamérica. La propuesta presentada se fundamenta en el análisis y aplicación de la metodología de planeamiento estratégico diseñada por el profesor Fernando D’Alessio, permitiendo identificar las fortalezas, debilidades, oportunidades y amenazas que experimenta la empresa, tomando como base el análisis de la situación externa así como interna en que se desenvuelve para establecer estrategias y alcanzar los objetivos tanto a corto plazo (OCP) como a largo plazo (OLP) que demanda la visión determinada. La industria de alimentos de consumo masivo, alimentos industriales y nutrición animal es atractiva debido al crecimiento demográfico que experimenta la región que asegura una sostenibilidad de la operación de las empresas que pertenecen a este mercado. Debido a la problemática que afronta la compañía en la actualidad, se proponen estrategias derivadas de la elaboración de matrices, las cuales están basadas en su estrategia de crecimiento, con lo cual se logrará optimizar el nivel de apalancamiento que viene mostrando la firma, además, se conseguirá mejorar las utilidades y consolidarse como una corporación líder a nivel regional.In this document the strategic planning of the Peruvian company Alicorp SAA, an organization that has operations locally and in several South American countries concerned. The proposal is based on the analysis and implementation of strategic planning methodology designed by Professor Fernando D’Alessio, allowing to identify the strengths, weaknesses, opportunities and threats experienced by the company, based on the analysis of the external situation as internal in which it operates to establish strategies and achieve the objectives of both short-term (OCP) and long term (OLP) demanded by certain vision. The food industry of consumer goods, food and animal nutrition industry is attractive due to population growth experienced by the region that ensures sustainability of the operation of the companies belonging to this market. Because of the problems facing the company today, strategies derived from the production of matrices are proposed, which are based on its growth strategy, which will be able to optimize the level of leverage that is showing the firm. It was also able to improve profits and establish itself as a leading regional corporation.Tesi

    Esquemas de alimentación para larvicultura de pejelagarto (Atractosteus tropicus Gill): crecimiento, supervivencia y canibalismo

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    The design of specific feed based on digestive physiology, and an adequate feeding schedule, are important to reduce cannibalism and increase survival rate in larvae fish. The first objective of this study was evaluating growth, survival and cannibalism during tropical gar (Atractosteus tropicus Gill) larviculture, using four feeding schedules: CT (10 day co-feeding of Artemia nauplii and commercial trout feed), T1 (commercial trout feed), T2 (10 day co-feeding of Artemia nauplii and A. tropicus larvae designed feed) and T3 (A. tropicus larvae designed feed). The second objective was to determinate correlation between survival and cannibalism, using a linear regression model. We observed better growth and survival in the co-feeding treatments CT and T2. Cannibalism was observed in all treatments, with higher presence in T1 and T3 (treatments without Artemia nauplii co-feeding). It was observed a strong correlation between survival and cannibalism (r = -0.88, p < 0.05), demonstrating that cannibalism has a considerable effect on survival rate. We concluded that T2 represent the best alternative for A. tropicus feeding during larviculture, since they present better growth and less cannibalism.El diseño de dietas con base en la fisiología digestiva, así como un adecuado esquema de alimentación, permiten la disminución del canibalismo y el incremento de la supervivencia en la etapa larvaria de peces. Por lo anterior, el objetivo fue evaluar el crecimiento, supervivencia y canibalismo en la larvicultura del pejelagarto (Atractosteus tropicus Gill) bajo cuatro esquemas de alimentación: CT (co-alimentación con nauplio de Artemia por 10 días y dieta comercial de trucha), T1 (alimentación con la dieta comercial de trucha desde la apertura de la boca), T2 (co-alimentación con nauplio de Artemia y dieta diseñada para larvas de A. tropicus por 10 días) y T3 (alimentación con la dieta diseñada para A. tropicus desde la apertura de la boca), así como determinar la correlación entre el canibalismo y la supervivencia mediante un modelo de regresión lineal. Los mejores crecimientos y supervivencias se obtuvieron en los tratamientos T2 y CT. En todos los tratamientos se presentó canibalismo, siendo más alto cuando no se co-alimentó con nauplio de Artemia (T1 y T3). Se encontró una fuerte correlación (r = -0.88, p < 0.05) entre la supervivencia y el canibalismo, lo que demuestra que el canibalismo tiene efecto sobre la supervivencia. El tratamiento T2 representa la mejor alternativa para la larvicultura de A. tropicus, con mayor crecimiento y menor canibalismo

    The importance of notarial registration as an instrument for the protection of rights

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    La presente investigación tiene como objetivo analizar la importancia de la actividad notarial como instrumento de protección de derechos de los ciudadanos. La relevancia del artículo radica en que permitirá conocer la actividad del notario y las ventajas de acudir a uno. Para ello se realizó una investigación jurídica, documental de tipo reflexivo con enfoque cualitativo. Se hizo uso de diferentes bases de datos para acceder a artículos relevantes para la investigación. Entre los criterios de selección para los artículos se encuentran la antigüedad y el aporte que pueden brindar. Como resultado se obtiene que, desde tiempos antiguos, en la sociedad, el notario ha sido necesario para dar seguridad jurídica y legitimidad a diferentes actividades que se realizan en el diario vivir. Para un buen desempeño profesional es necesario aplicar los principios establecidos, de tal manera, tribute a la promoción de justicia social.The objective of this research is to analyze the importance of notarial activity as an instrument for the protection of citizens' rights. The relevance of the article lies in the fact that it will allow to know the activity of the notary and the advantages of going to one. For this, a legal, documentary research of a reflective type with a qualitative approach was carried out. Different databases were used to access articles relevant to the investigation. Selection criteria for articles include age and the contribution they can provide. As a result, it is obtained that since ancient times, in society, the notary has been necessary to give legal security and legitimacy to different activities that are carried out in daily life. For a good professional performance, it is necessary to apply the established principles, in such a way, pay tribute to the promotion of social justice

    39th Annual International Conference of the IEEE Engineering in Medicine and Biology Society

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    Producción CientíficaDementia due to Alzheimer’s disease (AD) is a common disorder with a great impact on the patients’ quality of life. The aim of this pilot study was to characterize spontaneous electroencephalography (EEG) activity in dementia due to AD using bispectral analysis. Five minutes of EEG activity were recorded from 17 patients with moderate dementia due to AD and 19 age-matched controls. Bispectrum results revealed that AD patients are characterized by an increase of phase coupling at low frequencies in comparison with controls. Additionally, some bispectral features calculated from the bispectrum showed significant differences between both groups (p < 0.05, Mann-Whitney U test with Bonferroni’s correction). Finally, a stepwise logistic regression analysis with a leave-one-out cross-validation procedure was used for classification purposes. An accuracy of 86.11% (sensitivity = 88.24%; specificity =84.21%) was achieved. This study suggests the usefulness of bispectral analysis to provide further insights into the underlying brain dynamics associated with ADThis research was supported in part by ‘Ministerio de Economía y Competitividad (MINECO)’ and FEDER under project TEC2014-53196-R, and ‘Consejería de Educación de la Junta de Castilla y León’ under project VA037U16. F. Vaquerizo-Villar was in receipt of a ‘Promoción de Empleo Joven e Implantación de la Garantía Juvenil en I+D+i’ grant from MINECO and University of Valladolid. C. Gómez, F. Vaquerizo-Villar, J. Poza, Saúl J. Ruiz, and R. Hornero are with the Biomedical Engineering Group, E.T.S. Ingenieros de Telecomunicación, University of Valladolid, Paseo Belén 15, 47011 Valladolid, Spain (e-mail: [email protected]). M. A. Tola is with the Department of Neurology, Hospital Universitario Río Hortega, Valladolid, Spain. M. Cano is with the Department of Clinical Neurophysiology, Hospital Universitario Río Hortega, Valladolid, Spain

    40th Annual International Conference of the IEEE Engineering in Medicine and Biology Society

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    Producción CientíficaMild cognitive impairment (MCI) is a pathology characterized by an abnormal cognitive state. MCI patients are considered to be at high risk for developing dementia. The aim of this study is to characterize the changes that MCI causes in the patterns of brain information flow. For this purpose, spontaneous EEG activity from 41 MCI patients and 37 healthy controls was analyzed by means of an effective connectivity measure: the phase slope index (PSI). Our results showed statistically significant decreases in PSI values mainly at delta and alpha frequency bands for MCI patients, compared to the control group. These abnormal patterns may be due to the structural changes in the brain suffered by patients: decreased hippocampal volume, atrophy of the medial temporal lobe, or loss of gray matter volume. This study suggests the usefulness of PSI to provide further insights into the underlying brain dynamics associated with MCI.Competitividad’ and ‘European Regional Development Fund’ under project TEC2014-53196-R, by ‘European Commission’ and ‘European Regional Development Fund’ under project ‘Análisis y correlación entre el genoma completo y la actividad cerebral para la ayuda en el diagnóstico de la enfermedad de Alzheimer’ (‘Cooperation Programme Interreg V-A Spain- Portugal POCTEP 2014-2020’), and by ‘Consejería de Educación de la Junta de Castilla y León’ under project VA037U16. P. Núñez and S. J. Ruiz are in receipt of predoctoral grants co-financed by the ‘Junta de Castilla y León’ and ESF. N. Pinto’s work is partially financed through the FCT postdoctoral grant SFRH/BPD/97414/2013 and projects POCI-01-0145- FEDER-007274 and UID/MAT/00144/2013. C. Gómez, Saúl J. Ruiz-Gómez, J. Poza, A. Maturana-Candelas, P. Núñez, and R. Hornero are with the Biomedical Engineering Group, E.T.S. Ingenieros de Telecomunicación, University of Valladolid, Paseo Belén 15, 47011 Valladolid, Spain (e-mail: [email protected]). N. Pinto is with the Institute of Molecular Pathology and Immunology of the University of Porto (IPATIMUP), the Institute for Research and Innovation in Health Sciences, and the Center of Mathematics of University of Porto, Portugal. M. A. Tola is with the Department of Neurology, Hospital Universitario Río Hortega, Valladolid, Spain. M. Cano is with the Department of Clinical Neurophysiology, Hospital Universitario Río Hortega, Valladolid, Spain
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