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Search Results: 1 - 10 of 36157 matches for " Yareida Hernández Amaro "
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Certificados de defunción versus estudios necropsicos en el infarto miocárdico agudo Death certifications vs. pathological studies in Acute Myocardial Infarction
Jorge Pi?ón Pérez,Yareida Hernández Amaro,Candelaria Lores Echevarria,Agustin Lemus Sarracino
Revista de Ciencias M??dicas de Pinar del R?-o , 2006,
Abstract: Se realizó un estudio descriptivo , retrospectivo clínico anatomo-patológico de todos los pacientes fallecidos por un presunto infarto miocárdico agudo, según los resultados de los certificados de defunción emitidos o por los estudios necrópsicos, en el hospital "Abel Santamaría Cuadrado" de Pinar del Rió, desde el 1ro de enero del 2004 hasta el 31 de diciembre del 2005, con el objetivo de contribuir a obtener una estadística de letalidad por IMA que se aproxime objetivamente más a la realidad actual. Entre los resultados más significativos debemos se alar que el 15.9% de los certificados de defunción emitidos por un infarto cardiaco agudo no se correspondió con este diagnóstico, y el análisis de los estudios necrópsicos demostró que el 23.5% de los pacientes fallecidos por esta entidad no se diagnosticaron en vida. Pudo demostrarse que en los ancianos el diagnóstico de esta enfermedad es más difícil de realizar en vida por su sintomatología atípica. Hubo un determinado número de enfermedades o complicaciones propias del infarto agudo que suelen enmascararlo o simularlo clínicamente, siendo las principales las bronconeumonías de evolución tórpida, las crisis hipertensivas, la enfermedad pulmonar obstructiva crónica descompensada y el paro cardiaco. En las salas comunes de cirugía y medicina interna fue donde se cometieron más errores diagnósticos, mientras que los mejores resultados se obtuvieron en la unidad de cuidados coronarios intensivos. Concluimos haciendo hincapié en la necesidad de incentivar la realización de los estudios necrópsicos y de efectuar periódicamente la reparación de los certificados de defunción emitidos por un presunto infarto miocárdico agudo, por los comités de fallecidos hospitalarios. A descriptive, retrospective, clinical anatomopathological study was performed on all the patients deceased due to a so-called acute miocardial infarction, according to the results from the issued death certificates or through the necropsic studies at Abel Santamaría Cuadrado Hospital in Pinar del Río province, from January 1st. 2004 to December 31st. 2005, aimed at helping to obtain mortality statistics due to AMI which are more objectively close to the current reality. Among the most significant results, we should state that 15.9% of the death certificates issued due to an acute miocardial infarction was not consistent with this diagnosis, and the analysis of the necropsic studies showed that 23.5% of the deceased patients due to this entity were not diagnosed when alive. It was demonstrated that in the aged the diagnosis of this disease is ha
Certificados de defunción versus estudios necropsicos en el infarto miocárdico agudo
Pi?ón Pérez,Jorge; Hernández Amaro,Yareida; Lores Echevarria,Candelaria; Lemus Sarracino,Agustin; álvarez Miranda,Caridad;
Revista de Ciencias M??dicas de Pinar del R?-o , 2006,
Abstract: a descriptive, retrospective, clinical anatomopathological study was performed on all the patients deceased due to a so-called acute miocardial infarction, according to the results from the issued death certificates or through the necropsic studies at abel santamaría cuadrado hospital in pinar del río province, from january 1st. 2004 to december 31st. 2005, aimed at helping to obtain mortality statistics due to ami which are more objectively close to the current reality. among the most significant results, we should state that 15.9% of the death certificates issued due to an acute miocardial infarction was not consistent with this diagnosis, and the analysis of the necropsic studies showed that 23.5% of the deceased patients due to this entity were not diagnosed when alive. it was demonstrated that in the aged the diagnosis of this disease is harder to carry out when alive due to its atypical symptoms. there was a certain member of diseases or complications typical of an acute infarction which tend to disguise it or clinically simulate it, being the main complications the torpid progress bronchopneumonias, hypertensive crises, decompensated cronic obstructive pulmonary disease, and heart arrest. most diagnostic mistakes were made at regular operation rooms and internal medicine wards, whereas the best results were obtained at the coronary intensive care unit. as a conclusion, great emphasis is made on the need to encourage the performance of necropsic studies and periodically repair the death certificates issued due to a so-called miocardial infarction, by the commission for in-hospital deceased.
Eficacia y aporte económico de la punción aspirativa con aguja fina en ganglio linfático
Cirión Martínez,Gladys; Herrera Pérez,Miguel ángel; Lores Echevarria,Candelaria; Hernández Amaro,Yareida; Pileta Matos,Alfredo;
Revista de Ciencias M??dicas de Pinar del R?-o , 2004,
Abstract: se tomaron todas las punciones aspirativas con aguja fina (paaf) de ganglios linfáticos durante 15 a?os de trabajo y se compararon con los resultados histológicos, en un estudio prospectivo longitudinal, descriptivo en 1221 pacientes, obteniéndose una evaluación del método con una especificidad de un 97,97% y una eficacia de un 94,51%, se comprobó que a medida que se envejece aumenta la posibilidad de enfermar por una neoplasia maligna. en los pacientes diagnosticados como negativos la patología más frecuente fue la adenitis crónica con 560 pacientes y en los casos diagnosticados como positivos las metástasis fueron las más frecuentes con 247 enfermos, seguidas por los linfomas no hodgkin y hodgkin. se calcularon los costos unitarios tanto del acto quirúrgico para la extracción de la muestra como del procesamiento del tejido una vez obtenido, determinando un ahorro total de $37,240.06 en los casos en que el diagnóstico pudo ser concluido sólo mediante la paaf, sin necesidad de la realización de biopsia por parafina.
Eficacia y aporte económico de la punción aspirativa con aguja fina en ganglio linfático Effectiveness and economic contribution of thin-needle aspiration biopsy in lymphatic node
Gladys Cirión Martínez,Miguel ángel Herrera Pérez,Candelaria Lores Echevarria,Yareida Hernández Amaro
Revista de Ciencias M??dicas de Pinar del R?-o , 2004,
Abstract: Se tomaron todas las punciones aspirativas con aguja fina (PAAF) de ganglios linfáticos durante 15 a os de trabajo y se compararon con los resultados histológicos, en un estudio prospectivo longitudinal, descriptivo en 1221 pacientes, obteniéndose una evaluación del método con una especificidad de un 97,97% y una eficacia de un 94,51%, se comprobó que a medida que se envejece aumenta la posibilidad de enfermar por una neoplasia maligna. En los pacientes diagnosticados como negativos la patología más frecuente fue la adenitis crónica con 560 pacientes y en los casos diagnosticados como positivos las metástasis fueron las más frecuentes con 247 enfermos, seguidas por los linfomas no Hodgkin y Hodgkin. Se calcularon los costos unitarios tanto del acto quirúrgico para la extracción de la muestra como del procesamiento del tejido una vez obtenido, determinando un ahorro total de $37,240.06 en los casos en que el diagnóstico pudo ser concluido sólo mediante la PAAF, sin necesidad de la realización de biopsia por parafina.
Theoretical study of neutrino-induced coherent pion production off nuclei at T2K and MiniBooNE energies
Amaro, J. E.;Hernández, E.;Nieves, J.;Valverde, M.
High Energy Physics - Phenomenology , 2008, DOI: 10.1103/PhysRevD.79.013002
Abstract: We have developed a model for neutrino-induced coherent pion production off nuclei in the energy regime of interest for present and forthcoming neutrino oscillation experiments. It is based on a microscopic model for pion production off the nucleon that, besides the dominant Delta pole contribution, takes into account the effect of background terms required by chiral symmetry. Moreover, the model uses a reduced nucleon-to-Delta resonance axial coupling, which leads to coherent pion production cross sections around a factor two smaller than most of the previous theoretical estimates. In the coherent production, the main nuclear effects, namely medium corrections on the Delta propagator and the final pion distortion, are included. We have improved on previous similar models by taking into account the nucleon motion and employing a more sophisticated optical potential. As found in previous calculations the modification of the Delta self-energy inside the nuclear medium strongly reduces the cross section, while the final pion distortion mainly shifts the peak position to lower pion energies. The angular distribution profiles are not much affected by nuclear effects. Nucleon motion increases the cross section by 15% at neutrino energies of 650 MeV, while Coulomb effects on charged pions are estimated to be small. Finally, we discuss at length the deficiencies of the Rein-Sehgal pion coherent production model for neutrino energies below 2 GeV, and in particular for the MiniBooNE and T2K experiments. We also predict flux averaged cross sections for these two latter experiments and K2K.
Respuesta de líneas transgénicas de ficus lyrata warb. portadoras del gen quimérico p sag12:: ipt a diferentes ambientes de cultivo Response of transgenic lines of Ficus lyrata Warb. carrying P SAG12:: ipt chimeric gene under different growing environments
Jhonathan Torres Amaro,Jesús Sangronis Herrera,Alexander Hernández
Bioagro , 2012,
Abstract: Ficus lyrata es una importante especie ornamental para interiores y paisajismo. Se evaluó el comportamiento de cuatro líneas transgénicas (tg) portadoras del gen P SAG12:ipt y el testigo sin transformar (wt), ante cuatro ambientes de cultivo: 1) 78 μmol·m-2·s-1 y 30 oC; 2) 42 μmol·m-2·s-1 y 27 oC; 3) 36 μmol·m-2·s-1 y 32 oC; 4) 18 μmol·m-2·s-1 y 27 oC. Se emplearon vitroplantas en potes con sustrato, cultivadas en umbráculo durante 270 días antes de ser sometidas a los tratamientos. Las líneas transgénicas presentaron menor contenido relativo de clorofila que el testigo sin transformar, pero mayor altura de planta y número de hojas. Entre las líneas transgénicas, la tg19 fue más alta, con hojas más grandes y menor número de ellas, mientras que la tg25 se mostró como una planta de porte bajo con gran cantidad de hojas peque as. En términos generales, el efecto de la expresión del transgen fue similar en todos los ambientes y consistió en incremento de la altura de las plantas y número de hojas, y reducción del contenido relativo de clorofila. Con base en el tama o de la planta, número de hojas y coloración del follaje, el ambiente 3 puede considerarse el más adecuado para el cultivo de esta especie con fines ornamentales. Ficus lyrata is an important ornamental species as interior plant and for landscaping. In the present work there was evaluated the behavior of four transgenic lines (tg) harboring the P SAG12:ipt gene and the wild type, without transforming (wt), exposed to different culture environments: 1) 78 μmol· m-2·s-1 and 30 oC; 2) 42 μmol· m-2·s-1 and 27 oC; 3) 36 μmol· m-2·s-1 and 32 oC; 4) 18 μmol· m-2·s-1 and 27 oC. Vitroplants in pots with substrate were cultivated in a shadehouse for 270 days before submitting them to the treatments. The transgenic lines had lower relative chlorophyll content than the control, but they were taller with higher leaf number. Among the transgenic lines, the tg19 was higher, with larger leaves, and fewer number of them, while the tg25 showed as a low growing plant with many small leaves. In general terms, the effect of the expression of the quimeric gene was similar in the four environments and promoted the increase of plant height and number of leaves, and reduction of chlorophyll content. Based on plant height, leaves number and coloration of the foliage, the environment 3 can be considered to be most suitable for the culture of this species for ornamental purposes.
Theoretical study of neutrino-induced coherent pion production off nuclei at T2K and MiniBooNE energies
J. E. Amaro,E. Hernández,J. Nieves,M. Valverde
Physics , 2008, DOI: 10.1103/PhysRevD.79.013002
Abstract: We have developed a model for neutrino-induced coherent pion production off nuclei in the energy regime of interest for present and forthcoming neutrino oscillation experiments. It is based on a microscopic model for pion production off the nucleon that, besides the dominant Delta pole contribution, takes into account the effect of background terms required by chiral symmetry. Moreover, the model uses a reduced nucleon-to-Delta resonance axial coupling, which leads to coherent pion production cross sections around a factor two smaller than most of the previous theoretical estimates. In the coherent production, the main nuclear effects, namely medium corrections on the Delta propagator and the final pion distortion, are included. We have improved on previous similar models by taking into account the nucleon motion and employing a more sophisticated optical potential. As found in previous calculations the modification of the Delta self-energy inside the nuclear medium strongly reduces the cross section, while the final pion distortion mainly shifts the peak position to lower pion energies. The angular distribution profiles are not much affected by nuclear effects. Nucleon motion increases the cross section by 15% at neutrino energies of 650 MeV, while Coulomb effects on charged pions are estimated to be small. Finally, we discuss at length the deficiencies of the Rein-Sehgal pion coherent production model for neutrino energies below 2 GeV, and in particular for the MiniBooNE and T2K experiments. We also predict flux averaged cross sections for these two latter experiments and K2K.
Comparación entre la estimulación ortodrómica y antidrómica del nervio sural Comparison of orthodromic and antidromic stimulation of the sural nerve
Bárbara Aymeé Hernández Hernández,Marta Brown Martínez,Judith Ca?izarez Quintero,Mercedes Collazo Amaro
Revista Cubana de Investigaciones Biom??dicas , 2004,
Abstract: Se identificaron posibles diferencias en las respuestas del nervio sural obtenidas mediante técnicas antidrómicas y ortodrómicas. Se realizó estudio de conducción de nervio sural bilateralmente, a 37 sujetos sanos de los 2 sexos en las condiciones estandarizadas para estos. Se obtuvo a través de t de Student que existen diferencias estadísticamente significativas en los 2 sexos entre las variables duración de la fase negativa, amplitud y área, obtenidas por ambas técnicas. Por lo que se concluyó que con la estimulación antidrómica la respuesta tiene mayor amplitud, se define mejor, y presenta mayor duración de la fase negativa. Esto podría ser utilizado como método alternativo para la confirmación electrofisiológica de da o del nervio sural, no demostrado con los métodos neurográficos convencionales Possible differences in sural nerve responses obtained from the application of antidromic and orthodromic techniques were identified. A study of bilateral conduction of sural nerve was performed in 37 healthy subjects of both sexes under standardized conditions. Student′s t test yielded that there were statistically significant differences between the two sexes regarding variables such as duration of negative phase, amplitude and area obtained from both techniques. Therefore, it was concluded that antidromic stimulation facilitates a response of wider amplitude, better definition and longer duration of negative phase. This might be used as an alternative method to electrophysiologically confirm the sural nerve damage that is not shown by the conventional neurographic methods
La solución de problemas mediante la vinculación docencia-servicio
Caraballoso Hernández,Magali; Carrasco Amaro,Carlos Manuel; Jiménez Cangas,Leonor;
Educaci?3n M??dica Superior , 1997,
Abstract: a methodologic strategy is exposed which links the teaching of the future specialists in hygiene an epidemiology with the identification, priorities, and solutions of problems related to the service, with the objective of improving the practice of epidemiology, as well as the training in this specialty according to our health needs. the priorities concerning problem solving and the tasks performed by 3rd year residents in this specialty at each of the different selec-ted municipalities, as well as the forms of assessment are also pointed out.
Los enigmas de la homosexualidad
García Sarduy,Gustavo Adolfo; Cardoso Nú?ez,Oscarlyns; Amaro Hernández,Francisco; Mejías álvarez,Nelson;
Humanidades M??dicas , 2002,
Abstract: this revision was carried out with the main objective of reflecting aspects of homosexuality such as its definition, origins, psychological dysfunctions that may be associated to it and some ideas concerning the so - called ?therapies of change?. among the most outstanding findings we can mention the variety of existent definitions, their diverse origins from the biological, psychological and social points of view, the variety of psychological dysfunctions connected to it and the different criteria about the effectiveness of the therapies of change. the most important conclusions point out the real necessity of investigations on this variant of sexuality to end up understanding it in all its magnitude, besides deepening into the knowledge about the origins of heterosexuality in order to understand homosexuality thoroughly
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