Valoración del efecto de la calcitonina en la consolidación de la fractura de Colles

Se estudian cuarenta pacientes en que se ha producido una Fractura de Epífisis Distal de Radio (Fractura de POUTEAU-COLLES) en pacientes mayores de cincuenta años, con signos de osteoroporosis. Se han hecho dos grupos aleatorios de veinte pacientes. El grupo A se ha tratado con un programa de calcitonina y calcio que cubre los tres primeros meses. El grupo B es tratado exclusivamente con calcio, por igual período. En ambos la reducción e inmovilización sigue los mismos criterios. Se evalúan los resultados, observando que el grupo A presenta menos secuelas dolorosas.The authors have studied 40 patients with fracture of distal epiphysis of radius (POUTEAU-COLLES' fracture) all of them fifty years old with signs of osteoporosis. They have made two groups of patients (20 every one). The group A has been treated with a program of calcitonin and calcium during three months. The group B has been treated only with calcium, three months, as well as the other group. Both groups have the same criterion of reduction and inmovilization. The evaluation of results in the first group showed less painful consequences

Design and development of a CT imaging system for small animals

[Abstract] AMI International Conference 2003, September 21 - 27, Madrid, Spain: "High Resolution Molecular Imaging: from Basic Science to Clinical Applications"Positron emission tomography (PET) studies of small animals benefits from the registration of the functional information they provide with accurate anatomic images provided by dedicated computed tomography (CT) scanners. These scanners have to achieve the micrometric resolution requirements needed to locate structures in small laboratory animals like mice and rats. This work reports on a prototype based on a solid state semiconductor X-ray sensor and a microfocus Xray source.Publicad

Nurse species could facilitate the recruitment of mangrove seedlings after hydrological rehabilitation

Changes in hydrology are one of the main causes of mangrove degradation; however, the reforestation of mangrove has been the main restoration activity and very little information on how pioneer species can facilitate the colonization and development of the mangrove species is available. After carrying out a water reconnection as the sole restoration action, secondary succession has occurred in the mangrove rehabilitation area of Celestun (Yucatan, SE Mexico). Two pioneer species, Batis maritima and Salicornia virginica were observed in plots with different coverage (0%, 20%, 100%) where the three natural mangrove species were established, with Laguncularia racemosa as the dominant species in density. The greatest interstitial mean salinity (79.9 g/kg) was recorded in the plots with 20% cover, while the lowest salinity (40.7 g/kg) was recorded in the plots with 100% of coverage. At the end of sampling period nutrient content (carbon, nitrogen and phosphorus) and organic matter in the sediment were greatest in the plots with 100% cover, whereas the lowest concentrations were observed in the site devoid of vegetation. The percentage cover of S. virginica and B. maritima changed over time; in the plot that started with 100% cover it decreased until it disappeared at the end of the study period, whereas it increased in the plots with 20% and 0% cover. This study shows that B. maritima and S. virginica has a function as "facilitator species" initially colonizing the bare soil and modifying its conditions (decreasing interstitial salinity and increasing nutrient), which favored colonization and growing of mangrove seedlings

Effect of different interpolation methods on the accuracy of the reconstruction of spiral k-space trajectories in MRI

[Poster] 4th European Molecular Imaging Meeting, Barcelona, Spain, May 27 - 30, 2009This work is supported in part by the projects CdTeaM (CeniT-ingenio 2010), Ministerio de Ciencia e innovación, and Ciber Cb07/09/0031 CiberSaM, Ministerio de Sanidad y Consumo.Publicad

The Influence of Carbon Coatings on the Functional Properties of X39Cr13 and 316LVM Steels Intended for Biomedical Applications

[EN] Carbon coatings are used in many different industrial areas, for example in cutting, electronics, or medical applications. On the one hand, carbon coatings have improved the functional properties of medical products because of their high biotolerance, which makes them an important material for implant coatings. On the other hand, high rigidity and abrasion resistance are properties needed in case of surgical tools. Thus, the aim of this research was to study the influence of mechanical abrasion by tumbling and chemical passivation on carbon coatings deposited by reactive magnetron sputtering (RMS) and radio frequency plasma activated chemical vapor deposition (RF PACVD) of X39Cr13 (mainly used for surgical tools) and 316LVM (mainly used for implants). Functional properties, such as roughness, coatings adhesion (scratch test), and wettability were investigated. As a result, DLC coatings applied by magnetron sputtering were found to be the optimum surface treatment in terms of adhesion and wettability properties, being more appropriate for the use of X39Cr13 base than 316LVM for carbon layer deposition.S

Avulsión de la tuberosidad anterior de la tibia asociada a rotura del tendón cuadricipital

Se presenta 1 caso de fractura-avulsión de la tuberosidad anterior de la tibia asociada a rotura del tendón cuadricipital en un varón de 16 años. Tras el tratamiento quirúrgico de la fractura tuberositaria, y a pesar de haber pasado inicialmcnte inadvertida la lesión tendinosa, el resultado final a los 9 meses ha sido satisfactorio.A case of avulsion-fracture of the anterior tibial tubercle associated with rupture of the cuadricipital tendon in a 16-ycars-old boy is presented. After surgical treatment, in spite of having overlooked initially the tendinous lesion, the functional result at 9 months follow-up has been satisfactory

Towards high performance small animal positron emission tomography

Proceeding of: 2002 IEEE Symposium International on Biomedical Imaging, Washington, D.C., USA, July 7-10, 2002During the last decade increasingly sophisticated positron emission tomography (PET) scanners have been developed for imaging small laboratory animals. These systems often exhibit performance characteristics, e.g. spatial resolution, substantially better than contemporary human PET scanners and are often the first systems to demonstrate new technologies, e. g. avalanche photodiodebased detector modules. Despite these advances, spatial resolution, sensitivity, resolution uniformity and other performance parameters must continue to be improved if accurate general purpose imaging is to be carried out in the most popular research subject, the mouse. Moreover. as these improvements occur, methods must also be devised to minimize the resolution-degrading effects of positron range, the distance a positron travels from the decaying nucleus before encountering and mutually anll1hllattng an electron. Range effects are particularly important for compounds labeled with "non-traditional" positron-emitters such as 1-124 or Tc-94m. In order to illustrate the complex interplay of issues that must be addressed when contemplating such improvements, we describe how we have approached high performance PET imaging in the design and construction of ATLAS (Advanced Technology Laboratory Animal Scanner), a small animal PET scanner now entering servIce at the National Institutes of Health (NIH) in Bethesda, Md

Preliminary results of the effect of temperature and relative humidity on milk yield and components in Payoya breed goats

Un total de 81625 registros mensuales de 8380 hembras de la raza Payoya paridas en 18 ganaderías entre 2004 y 2007 fueron estudiados aplicando diferentes modelos lineales, con el objetivo de estimar los posibles efectos de un índice que combina Temperatura y Humedad Relativa (THI), sobre las variables de producción de leche y sus características físico-químicas. Los primeros resultados indicaron que existe una zona de termoneutralidad (THI entre 13 y 22) en la cual no se han evidenciado claramente los efectos del estrés térmico. Para valores de THI>22 se creó una función fT para estimar los componentes genéticos generales y los debidos al estrés térmico. Las correlaciones genéticas fueron -0.342 y -0.320 entre producción de leche y la fT indicando un antagonismo entre ambas características. Por último, se pudo poner de manifiesto la existencia de una variabilidad genética importante para capacidad de adaptación frente al estrés térmico. Estos resultados pueden brindar importantes beneficios a los criadores de la raza caprina PayoyaProduction data included 81625 test-day records of 8380 dairy goats (Payoya breed) from 18 flocks collected from 2004 to 2007. The traits analyzed were daily milk yield and milk composition, using different linear models, to determine the effect of increasing temperature-humidity index (THI) on these traits. The results report that the range between 13 and 22 for THI is the thermoneutral zone of the animals. The genetic correlations between the general additive effect and the additive effect of heat tolerance were negative (-0,342 to -0,320) to THI>22. Therefore, milk yield is antagonistic with heat tolerance. However, the genetic variability to heat tolerance could report important profits to dairy goat breeders if they consider the greater or smaller adaptability to the environmental conditions as a selection criteri

P10 25. ¿Aumenta la extracción endoscópica de vena safena las complicaciones inmediatas en los pacientes coronarios?

ObjetivoEn 2009 se ha empleado en nuestro centro la extracción endoscópica de vena safena (EEVS). Analizamos si tiene un impacto inmediato en infarto perioperatorio y supervivencia.Material y métodosSe han analizado todos los pacientes coronarios aislados intervenidos en 2009. Se emplearon el Vasoview 6 y Hemopro.La duración de la intervención, estancia en unidad de cuidados intensivos (UCI), troponina postoperatoria y necesidad de aminas fueron comparadas en ambos grupos.ResultadosFueron intervenidos 291 pacientes de revascularización coronaria aislada, con un 28,5% de EEVS.Edad media 67,38 (36-83), varones 79,4%. El 47,6% fue cirugía sin bomba extracorpórea. Mortalidad global del 2,9%. Se realizaron una media de 2,64 (desviación estándar [DE] 0,904) injertos/paciente, con un tiempo total medio de quirófano de 5,83 h (DE 1,18).No precisó soporte inotrópico el 65%, y a dosis bajas en el 25,6%. Troponina máxima 0,701 (0,1-12,5). Estancia mediana en UCI 1 día (1-30).La duración de la intervención fue significativamente mayor en los pacientes con EEVS (5,68 h vs 6,41 h; p = 0,005).La troponina máxima fue ligeramente superior en el grupo de extracción convencional (0,73 vs 0,65; p = 0,667), no significativa. No hubo diferencias significativas en duración media del ingreso en UCI, ni en necesidad de soporte inotrópico.ConclusiónLa EEVS no produce repercusión precoz en cuanto a infarto perioperatorio/duración de UCI, aunque se precisa seguimiento para estimar diferencias a largo plazo.La EEVS prolonga la duración de la intervención dada su mayor complejidad técnica

Quantitative comparison of partial fourier reconstruction algorithms in MRI at 7T

[Poster] 4th European Molecular Imaging Meeting, Barcelona, Spain, May 27 - 30, 2009In this work we present a quantitative comparison at 7T of the most common partial fourier reconstruction algorithms: conjugate synthesis with phase correction, Margosian method, homodyne reconstruction, PoCS algorithm and iterative homodyne reconstructionThis work is supported in part by the projects CdTeaM (CeniT-ingenio 2010), Ministerio de Ciencia e innovación, and Ciber Cb07/09/0031 CiberSaM, Ministerio de Sanidad y Consumo.Publicad