oalib

Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99

Submit

Any time

2019 ( 162 )

2018 ( 222 )

2017 ( 205 )

2016 ( 286 )

Custom range...

Search Results: 1 - 10 of 118639 matches for " Leonel Téllez Traba "
All listed articles are free for downloading (OA Articles)
Page 1 /118639
Display every page Item
Aspectos patogénicos de la enfermedad descompresiva en buzos Etiopathogenic aspects of the decompression illness in divers
Vicente Río Vázquez,Alberto Salda?a Bernabeu,Leonel Téllez Traba,Urbano Leyva Moreno
Revista Cubana de Medicina Militar , 2005,
Abstract: En los últimos a os la incidencia de la enfermedad descompresiva en Cuba se ha elevado. Para que se presente esta enfermedad los buzos deben respirar una mezcla gaseosa que contenga uno o más gases inertes (por ejemplo: nitrógeno, helio, hidrógeno), y deben permanecer un tiempo y a una profundidad determinada para que se produzca una saturación considerable de gas inerte en los tejidos. En esas condiciones es imprescindible realizar durante el ascenso paradas estáticas por el buzo para eliminar el sobrante de gas inerte que se acumula en los tejidos. Si se omiten estas paradas se producirá una sobresaturación excesiva de gas inerte que puede alcanzar el punto crítico de sobresaturación a partir del cual el gas cambia de estado y forma burbujas. Estas burbujas que pueden ser intravasculares y/o extravasculares son las responsables del cuadro sintomático de la enfermedad descompresiva. The incidence of the decompression illness in Cuba has increased in the last years. For this sickness to appear, the divers should breath a gaseous mix containing one or more inert gases (for instance: nitrogen, helium, hydrogen) and they should remain under water for a time and at a certain depth so that a considerable saturation of inert gas occurs in the tissues. Under these conditions, it is indispensable that the diver makes static stops to eliminate the excess of inert gas accumulated in the tissues. If the diver does not do so, an excessive oversaturation of inert gas will occur that may reach the critical point of oversaturation, starting from which the gas changes of state and makes bubbles.These bubbles that may be intravascular and/or extravascular are the responsible for the symptomatic picture of the decompression illness.
Aspectos patogénicos de la enfermedad descompresiva en buzos
Río Vázquez,Vicente; Salda?a Bernabeu,Alberto; Téllez Traba,Leonel; Leyva Moreno,Urbano; Torres Perdomo,José E.;
Revista Cubana de Medicina Militar , 2005,
Abstract: the incidence of the decompression illness in cuba has increased in the last years. for this sickness to appear, the divers should breath a gaseous mix containing one or more inert gases (for instance: nitrogen, helium, hydrogen) and they should remain under water for a time and at a certain depth so that a considerable saturation of inert gas occurs in the tissues. under these conditions, it is indispensable that the diver makes static stops to eliminate the excess of inert gas accumulated in the tissues. if the diver does not do so, an excessive oversaturation of inert gas will occur that may reach the critical point of oversaturation, starting from which the gas changes of state and makes bubbles.these bubbles that may be intravascular and/or extravascular are the responsible for the symptomatic picture of the decompression illness.
Neumoencéfalo secundario a barotrauma durante el buceo
Río Vázquez,Vicente; Gil Cruz,Juan José; Téllez Traba,Leonel; Batista Mesa,Bárbara Vivian;
Revista Cubana de Medicina Militar , 2003,
Abstract: the case of a diver that submerged at a depth of 25 meters and on arriving to the surface had occipital intense headache with dizziness and nausea was reported. later, he presented taking of conciousness and neurological focalization. in antero-posterior and lateral radiographies and computerized tomography of the cranium it was observed a large pneumocephalus in the left hemisphere and an osteoma in the left frontal sinus. left frontotemporal craniotomy with evacuation of the pneumocephalus was performed. neurological improvement was observed and 48 hours later he died due to a respiratory infection. the osteoma eroded the posterior wall of the frontal and subdural sinus, which allowed the accumulation of subdural air and prevented its extraction by a mechanism of dural valve.
Neumoencéfalo secundario a barotrauma durante el buceo
Vicente Río Vázquez,Juan José Gil Cruz,Leonel Téllez Traba,Bárbara Vivian Batista Mesa
Revista Cubana de Medicina Militar , 2003,
Abstract: Se presenta el caso de un buzo que realizó una inmersión a 25 m de profundidad y al llegar a la superficie se le instaló un cuadro de cefalea occipital intensa con mareos y náuseas. Posteriormente presentó toma de la conciencia y focalización neurológica. En radiografía antero-posterior y lateral, tomografía computadorizada de cráneo, se observó un gran neumoencéfalo en hemisferio izquierdo y en osteoma en el seno frontal izquierdo. Se realizó una craneotomía frontotemporal izquierda con evacuación del neumoencéfalo. Posteriormente se observó mejoría neurológica y 48 h más tarde fallece por una infección respiratoria. El osteoma erosionó la pared posterior del seno frontal y subdural, lo que permitió la acumulación de aire subdural y no su salida por un mecanismo de válvula dural. The case of a diver that submerged at a depth of 25 meters and on arriving to the surface had occipital intense headache with dizziness and nausea was reported. Later, he presented taking of conciousness and neurological focalization. In antero-posterior and lateral radiographies and computerized tomography of the cranium it was observed a large pneumocephalus in the left hemisphere and an osteoma in the left frontal sinus. Left frontotemporal craniotomy with evacuation of the pneumocephalus was performed. Neurological improvement was observed and 48 hours later he died due to a respiratory infection. The osteoma eroded the posterior wall of the frontal and subdural sinus, which allowed the accumulation of subdural air and prevented its extraction by a mechanism of dural valve.
Análisis crítico de un artículo:La terapia de reemplazo con la combinación de T3 con T4 no sería mejor que T4 sola en pacientes hipotiroideos
Téllez T,Rafael;
Revista médica de Chile , 2005, DOI: 10.4067/S0034-98872005000900018
Abstract: conflicting results have recently been published about the benefits of combined thyroxine (t4) and triiodothyronine (t3) in treating hypothyroid patients. however these studies may have been underpowered to detect differences in psychological well-being specifically related to thyroxine replacement. we conducted a large, double-blind, randomized controlled trial of partial substitution of 50 microg of t4 by 10 microg of t3 (t3) vs placebo (t4 alone - 50 microg of t4 replaced) in 697 hypothyroid patients. thyroid function showed a rise in the tsh (132%), a fall in free t4 (35%, p <0.001) and unchanged basal free t3 levels (p=0.92). at 3 months there was a large (39%) ?placebo effect? improvement in ?psychiatric caseness? defined by the general health questionnaire 12 score (ghq 12) in the control group compared with baseline and this was sustained at 12 months. differences vs the intervention (t3) group were more modest with improvements in ghq caseness (or - 0.61; 95% ci: 0.42, 0.90; p=0.01) and hads anxiety scores at 3 months (p <0.03) but not ghq likert scores, hads depression, thyroid symptoms or visual analog scales of mood and the initial differences were lost at 12 months. these results may be consistent with a subgroup of patients showing transient improvement following partial substitution with t3 but do not provide conclusive evidence of specific benefit from partial substitution of t4 by t3 in patients on thyroxine replacement. they also emphasize the large and sustained ?placebo effect? that can follow changes in thyroid hormone administration
Prevención y adherencia: Dos claves para el enfrentamiento de las enfermedades crónicas
Téllez T,Alvaro;
Revista médica de Chile , 2004, DOI: 10.4067/S0034-98872004001200001
Abstract: over 50% of adults in chile have a high cardiovascular risk. thus, non communicable chronic diseases may surpass the capacity of the health systems. therefore the prevention and treatment of their risk factors is urgent. unfortunately, the low patient's compliance with prescribed treatment, reduces their efficacy. the best interventions to improve compliance with chronic treatment programs are: to simplify daily doses of medications and to do complex behavioral interventions. risk factor prevention is a highly recommended action that has obtained promising results in chile with the program ?mírame?. to modify health behavior is also necessary to give people more power in their own care and to increase behavioral and social science contents into medical curricula (rev méd chile 2004; 132: 1453-5)
Prevención y adherencia: Dos claves para el enfrentamiento de las enfermedades crónicas Prevention and patient's compliance: Two key factors to deal with non communicable chronic diseases
Alvaro Téllez T
Revista médica de Chile , 2004,
Abstract: Over 50% of adults in Chile have a high cardiovascular risk. Thus, non communicable chronic diseases may surpass the capacity of the health systems. Therefore the prevention and treatment of their risk factors is urgent. Unfortunately, the low patient's compliance with prescribed treatment, reduces their efficacy. The best interventions to improve compliance with chronic treatment programs are: to simplify daily doses of medications and to do complex behavioral interventions. Risk factor prevention is a highly recommended action that has obtained promising results in Chile with the program Mírame . To modify health behavior is also necessary to give people more power in their own care and to increase behavioral and social science contents into medical curricula (Rev Méd Chile 2004; 132: 1453-5)
Análisis crítico de un artículo:La terapia de reemplazo con la combinación de T3 con T4 no sería mejor que T4 sola en pacientes hipotiroideos Critical appraisal: Combined T3 and T4 replacement therapy is not better than replacement with T4 alone
Rafael Téllez T
Revista médica de Chile , 2005,
Abstract: Conflicting results have recently been published about the benefits of combined thyroxine (T4) and triiodothyronine (T3) in treating hypothyroid patients. However these studies may have been underpowered to detect differences in psychological well-being specifically related to thyroxine replacement. We conducted a large, double-blind, randomized controlled trial of partial substitution of 50 microg of T4 by 10 microg of T3 (T3) vs placebo (T4 alone - 50 microg of T4 replaced) in 697 hypothyroid patients. Thyroid function showed a rise in the TSH (132%), a fall in Free T4 (35%, P <0.001) and unchanged basal Free T3 levels (P=0.92). At 3 months there was a large (39%) placebo effect improvement in psychiatric caseness defined by the General Health Questionnaire 12 score (GHQ 12) in the control group compared with baseline and this was sustained at 12 months. Differences vs the intervention (T3) group were more modest with improvements in GHQ caseness (OR - 0.61; 95% CI: 0.42, 0.90; P=0.01) and HADS anxiety scores at 3 months (P <0.03) but not GHQ Likert scores, HADS depression, thyroid symptoms or visual analog scales of mood and the initial differences were lost at 12 months. These results may be consistent with a subgroup of patients showing transient improvement following partial substitution with T3 but do not provide conclusive evidence of specific benefit from partial substitution of T4 by T3 in patients on thyroxine replacement. They also emphasize the large and sustained placebo effect that can follow changes in thyroid hormone administration
Casas publicadas
Téllez,Andrés;
ARQ (Santiago) , 2010, DOI: 10.4067/S0717-69962010000200003
Abstract: due to the fact that houses are the most published works of architecture, the author comparatively analyzes the projects in this issue from four points of view: geographies or interior distribution, transformations of existing works, rural or urban location and previous references.
Semantic Representation of Raster Spatial Data
Quintero Téllez, Rolando;
Computación y Sistemas , 2011,
Abstract: when people think spatially, they do not usually consider geographic coordinates nor projections. facing questions having a spatial sense, people do not answer with maps or coordinates, but use some references whose spatial location is "well known". for instance, the answer of a conventional geographic information system to the question "where is the cic?" would be "in coordinates 19.50314°n, 99.14759°w". in contrast, a person would answer "in zacatenco" or "near to eje central". the semantic processing attempts to enrich an abstraction level similar to the one that people use commonly. this processing, applied to spatial data, does not depend on scales, resolutions, projections or others that are fundamental in conventional systems. we assume that the first step for making semantic processing is the semantic description of "raw" spatial data. such description is the identification of the objects contained in data and the location of such objects within a conceptual framework, where they get a meaning. in this work, we present a methodology for making this semantic description using as a case study the digital elevation models. the methodology is build up of three stages: conceptualization, to define the conceptual framework of the description; synthesis, to process "raw" spatial data and to obtain the spatial objects contained in data; and description, to generate the representation of results from the synthesis according to the conceptual framework.
Page 1 /118639
Display every page Item


Home
Copyright © 2008-2017 Open Access Library. All rights reserved.