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Sample records for arterial esencial posible

  1. Factores cognitivos relacionados con la ira y la hostilidad en hipertensión arterial esencial

    OpenAIRE

    Magán Uceda, Inés

    2010-01-01

    La presente tesis doctoral tiene como objetivo principal el estudio del perfil psicológico de la hipertensión arterial esencial, especialmente en cuanto a la ira-hostilidad, siendo su principal novedad el estudio del papel de los factores cognitivos que propone Beck en su modelo ABC de la emoción, es decir, los pensamientos automáticos negativos y las creencias y actitudes disfuncionales relacionadas con la ira-hostilidad. La tesis doctoral se ha estructurado en tres partes: una primera parte...

  2. Efectos terapéuticos de la microdosis de captopril en la hipertensión arterial esencial

    OpenAIRE

    Santana Téllez, Tomás Noel

    2012-01-01

    Fundamento: Prescribir una terapéutica adecuada para un diagnóstico específico siempre es complejo, más cuando los índices de control clínico y la seguridad de los medicamentos que se utilizan en la actualidad no satisfacen tales objetivos. Objetivo: Demostrar los efectos de la microdosis de captopril administrada por vía bucal en el tratamiento de la hipertensión arterial esencial. Método: Se realizaron dos ensayos clínicos aleatorizados, unicéntricos, de grupos paralelos y contr...

  3. Tendencia de la tensión arterial en mujeres con hipertensión arterial esencial-estadio ii tratadas con un inhibidor de la enzima convertidora de angiotensina

    OpenAIRE

    Garcés Ferrer, Mario E.; López P., Luis A.; Holguín, Esperanza

    2013-01-01

    Objetivo: Valorar el comportamiento de la tensión arterial en un grupo de mujeres con hipertensión arterial esencial- estadio II tratadas con guinapril, un inhibidor de la enzima convertidora de angiotensina. Métodos: se realizó un estudio epidemiológico experimental del subgrupo de pruebas clínicas con autocontroles en 16 mujeres aquejadas por hipertensión arterial - estadio II. La observación de los datos de tensión arterial se realizó con esfigmomanómetro de mercurio en cuatro oportunidade...

  4. Epidemiología y patogenia de la hipertensión arterial esencial, rol de angiotensina II, óxido nítrico y endotelina

    OpenAIRE

    Eduardo Fiedler-Velásquez; Charles Gourzong-Taylor

    2005-01-01

    Actualmente se considera que la hipertensión arterial esencial es un verdadero problema de salud pública. Se estima que 1/6 de la población mundial sufre la enfermedad y en algunas poblaciones susceptibles la prevalencia es tan alta que 1 de 4 adultos mayores de 18 años es hipertenso. Aparentemente en Costa Rica la situación no es diferente a lo que ocurre mundialmente, se estima que hasta un 15.0 % de los costarricenses son hipertensos; sin embargo, los reportes de prevalencia no se encuentr...

  5. Apoyo familiar en el apego al tratamiento de la hipertensión arterial esencial Family support and drug therapy compliance in essential hypertension

    OpenAIRE

    Florentina Marín-Reyes; Martha Rodríguez-Morán

    2001-01-01

    Objetivo. Determinar la asociación entre apoyo familiar (AF) y apego al tratamiento de la hipertensión arterial esencial (HAS). Material y métodos. Estudio de casos y controles al que se integraron 80 sujetos con diagnóstico establecido de HAS, con 40 pacientes en cada grupo. Se consideró como casos a los pacientes con apego y como controles a los pacientes sin apego al tratamiento. El estudio se realizó de mayo a diciembre de 1999, en el Hospital Regional del IMSS, en la ciudad de Durango, D...

  6. Estudio cinético de los sistemas de transporte transmembranoso de sodio en la hipertensión arterial esencial

    OpenAIRE

    Sierra, Alejandro de la

    1987-01-01

    La hipertensión arterial es la enfermedad más frecuente de cuantas afectan a la especie humana. Su prevalencia actual se cifra en el 20 % y 25 % de la población mundial y su importancia radica en el hecho de ser uno de los principales factores de riesgo del padecimiento de enfermedades cardiovasculares que representan, sin lugar a dudas, la primera causa de muerte en la población occidental.Frente a un pequeño porcentaje de pacientes en los que se demuestra una causa definida de hipertensión ...

  7. El agua: un recurso esencial

    Directory of Open Access Journals (Sweden)

    Alicia Fernández Cirelli

    2012-01-01

    Full Text Available El agua es esencial para la vida y para el desarrollo de las sociedades. Posee propiedades únicas. En este trabajo se describen: la composición de las aguas naturales; la calidad de agua para los diferentes usos y su deterioro y los parámetros físico-químicos y biológicos usados como indicadores de calidad. Por último, se resalta la importancia de la representatividad del muestreo y la calidad de las mediciones químicas para que los resultados obtenidos permitan conclusiones válidas.

  8. POSSIBLE ENTRAPMENT OF THE ULNAR ARTERY BY THE THIRD HEAD OF PRONATOR TERES MUSCLE. EL POSIBLE ATRAPAMIENTO DE LA ARTERIA ULNAR POR EL TERCER FASCÍCULO DEL MÚSCULO PRONADOR TERES

    OpenAIRE

    Satheesha Nayak B; Ashwini Aithal; Srinivasa Rao Sirasanagandla; Naveen Kumar

    2012-01-01

    Knowledge of variations at and in the surroundings of cubital fossa is useful for the orthopedic surgeons, plastic surgeons and medical practitioners in general. During routine dissection, we observed arterial and muscular variations in and around the cubital fossa. The brachial artery terminated 2 inches above the base of the cubital fossa. The radial and ulnar arteries entered the cubital fossa by passing in front of the tendons of brachialis and biceps brachii respectively. The ulnar arter...

  9. El derecho a la salud: un derecho social esencial

    OpenAIRE

    Martínez de Pisón, José

    2006-01-01

    El derecho a la salud es considerado habitualmente como de carácter esencial, aunque paradójicamente no haya tenido el adecuado reconocimiento constitucional y legal. Frente a la clásica distinción entre derechos de libertad y derechos de igualdad, la justificación más actual del derecho a la salud parte de la noción de necesidades básicas, conceptualizadas como básicas, objetivas, generalizables e históricas. Del debate doctrinal, se puede concluir que las necesidades básicas serían consider...

  10. Prevalencia de hipertensión arterial, proporción de hipertensos que lo desconocen y algunos posibles factores de riesgo asociados, en el Municipio de Santo Tomás – Atlántico / Prevalence of high blood pressure, percentage of the people who have no knowledge of it, and some associated factors of risk in Municipio de Santo Tomás, Atlántico

    OpenAIRE

    Donado Badillo, Enrique Manuel

    2010-01-01

    Objetivo. Determinar la prevalencia de hipertensión arterial, proporción de las personas que lo desconocen, y algunos posibles factores de riesgo asociados en el municipio de Santo Tomás, Atlántico (Colombia) entre noviembre de 2008 y enero de 2009. Métodos. Estudio de corte transversal, de base poblacional encuestando a una muestra aleatoria de 244 personas mayores de 18 años para obtener información sociodemográfica, estado de aseguramiento, antecedentes familiares dentro del primer...

  11. Fragmento N-terminal del propéptido natriurético tipo B (NT-proBNP), respuesta inflamatoria y estrés oxidativo en la hipertensión esencial

    OpenAIRE

    Roselló Lletí, Esther

    2011-01-01

    El sistema circulatorio humano es una intrincada red de mecanismos destinados a mantener la homeostasis de presión y flujo pese a las diferentes perturbaciones que sufre y por tanto, una elevación de la presión arterial puede provocar un trastorno en las relaciones de los factores que mantienen este equilibrio. La hipertensión esencial, es el resultado de una compleja interacción entre cambios genéticos, neurohormonales, inflamatorios y bioquímicos. Como consecuencia el paciente hipertenso ti...

  12. Efecto de la poda sobre la cantidad y el rendimiento del aceite esencial de Laurus nobilis

    Directory of Open Access Journals (Sweden)

    Ana María Callejas-Leguizamon

    2013-07-01

    Full Text Available Objetivo. Conocer el comportamiento de la planta de laurel con diferentes podas, en cuanto a su rendimiento y cantidad de aceite esencial para satisfacer las demandas del mercado. Materiales y métodos. Se monitorearon 48 plantas, ubicadas en el municipio de Nuevo Colón, Boyacá, en un diseño completamente al azar, con tres tratamientos (deshoje, despunte y el testigo sin poda en 5 estadios fenológicos, con cuatro repeticiones. Se evaluó la respuesta en cuanto a tres solventes usados en la extracción y diferentes tipos de poda. Resultados. El hexano fue el solvente que permitió mayor extracción de aceite esencial de las hojas de laurel, seguido de etanol y cloroformo-metanol, respectivamente. Asimismo, en los diferentes tratamientos de poda se demostró que la mayor cantidad de aceite esencial (p≤0,01 se obtuvo en hojas de laurel con despunte, mientras que con deshoje se obtuvo la menor cantidad. Analizando el rendimiento, se encontraron rendimientos (2,32% en las hojas de laurel con despunte, seguido de las plantas testigo (2,05% y por último las plantas con deshoje (1,24%. Conclusiones. El despunte, como práctica agronómica, en laurel representa mayores beneficios al productor y es una alternativa de valor agregado.

  13. Rehacer los caminos para otros mundos posibles

    Directory of Open Access Journals (Sweden)

    Jaime Alberto Rendón Acevedo

    2016-05-01

    Full Text Available Se ha generado un ambiente de fracaso de las propuestas y acciones que desde la izquierda o desde sectores progresistas se hicieron en América Latina y más precisamente en Sur América. Un embate político sobre las alternativas al modelo neoliberal que se lograron instaurar en América Latina en los últimos 15 años. Este artículo contribuye a un debate que apenas comienza; una discusión en torno a los futuros posibles y al papel de los sectores progresistas y de izquierda en un continente que cada día cobra mayor importancia para los intereses de la geopolítica y la geoeconomía mundial. Para esto se empieza por analizar la coyuntura, obviamente con una perspectiva histórica, de tal manera que se posibilite entender el giro a la derecha o si se prefiere el retorno al modelo neoliberal. Luego el análisis tomará perspectivas de futuro, en donde los riesgos necesariamente aumentan para la Región por ser más visible y de mayor peso ante las presiones internacionales que ya ven en Sur América un actor importante. Por último, se presentan algunas reflexiones frente a los procesos económicos y políticos de cara al Buen Vivir en la América Latina.

  14. La formación humanística, fin esencial de la universidad

    OpenAIRE

    Pizzul, María Eugenia

    2013-01-01

    Presentación del tema: La formación humanista como fin esencial de toda Universidad. Título: De las Humanidades sin canon al Canon de las Humanidades. Relevancia: A menudo se escucha la siguiente frase: las Humanidades contribuyen muy poco a la vida de la persona, a la ciencia, a la economía de un país. En el actual contexto de globalización, esta afirmación nos presenta el dilema de la formación humanista (humana y cristiana) que hemos venido a llamar “crisis de las Humanidade...

  15. Actividad insecticida del aceite esencial de mintostachys mollis (hbk) griseb y sus componentes

    OpenAIRE

    Calle Alvarez, Jairo; Espinosa, Ana María; Nuñez, Claudia Patricia; Bautista,Edgar; Pinzón, Roberto

    2008-01-01

    Por medio de análisis preliminares en CCD del aceite esencial de  Mintostachys mollis (HBK) Griseb, se determinó la presencia de  terpenos, cetonas, alcoholes, fenoles y ácidos.  Por análisis de CG/EM de la fracción fenólica del aceite se identificaron 4 compuestos: timol (6.2%), carvacrol (3.5%), diosfenol e isoeugenol (0.9%)  y en la fracción terpénica 10: pulegona (30.2%), mentona (29.2%), cariofileno (5.0%), linalol, mentol, isopulegol, piperitona, verbenona, carvomentona y candineno. La ...

  16. Radiofrecuencia pulsada en la neuralgia esencial del trigémino: ¿Es una alternativa válida a la radiofrecuencia convencional?

    Directory of Open Access Journals (Sweden)

    M. Castro

    2008-04-01

    Full Text Available Objetivos. Demostrar la eficacia y seguridad de la radiofrecuencia pulsada en el tratamiento de la neuralgia esencial del trigémino y compararla con la técnica convencional. Material y métodos. Estudio observacional prospectivo en 32 pacientes diagnosticados de neuralgia esencial del trigémino a los que se les realizó un total de 44 radiofrecuencias del ganglio de Gasser. Las radiofrecuencias fueron realizadas en quirófano, bajo control radioscópico con un generador Neurotherm, agujas SMK 22G, estimulación sensitiva a 50 Hz hasta notar parestesia con 0,3-0,5 V y motora a 2 Hz sin que haya contracción del músculo masetero excepto si se está estimulando la 3ª rama. Se realizaron 28 radiofrecuencias pulsadas (RFP y 16 convencionales (RFC. La RFP se realizaba a una tª de 40º C durante 120 sg mientras que la RFC se realizaba a una tª de 80º C durante 60 sg. La eficacia del tratamiento se basó en control del dolor según la EVA a los 30, 90, y 180 días y mediante el test de Lattinen antes y al final del estudio. Todos los pacientes fueron preguntados acerca de posibles efectos secundarios. Resultados. Se realizaron un total de 44 procedimientos. El 60% de los pacientes fueron varones y el 40% mujeres. La edad media fue de 68.32 años. Ambos grupos fueron comparables en cuanto a patología previa y antecedentes personales. Entre las ramas afectas el 4.5% de los pacientes tenía afectada la primera rama, el 31.8% la segunda rama, el 36.4% la tercera rama, el 13.6% la primera y segunda rama, y el 13.6% la segunda y tercera rama. Los pacientes recibieron RFP en el 63,6% de los casos y RFC en el 36.4%. En el grupo de RFP la evolución del VAS fue: VAS 0: 8; VAS 1: 3 .4; VAS 3: 2.5 y VAS 6: 2. y del índice de Lattinen, L0: 16.9 y L6: 6. En el grupo de RFC, VAS 0: 7.9; VAS 1: 3.25; VAS 3: 2 y VAS 6: 2. El índice de Lattinen, L0: 16.125 y L6: 5. No hubo diferencias estadísticamente significativas en la reducción del VAS y del Lattinen

  17. Determination of the Aldosterone/Plasma Renin Activity Ratio for the Screening of Primary Hyperaldosteronism in Essential Hypertension: a Multicentric Study Determinación del valor de corte de la relación aldosterona/actividad de renina plasmática para la detección de hiperaldosteronismo primario en hipertensión arterial esencial: estudio multicéntrico

    Directory of Open Access Journals (Sweden)

    E Pardes

    2010-06-01

    Full Text Available Primary hyperaldosteronism (PHA or Conn's disease was classically suspected in the presence of hypertension (H and hypokalemia. It was previously considered as a rare cause of H, being reported in only 1% of hypertensive patients. It can be caused by an adrenal adenoma (the former usual presentation or by adrenal hyperplasia. But since the use of the aldosterone/plasma renin activity ratio (AAR as the screening method in the last years, it is currently considered as almost the most frequent cause of secondary H., accounting for 5-10% of essential H. Plasma rennin activity (PRA determination is a laborious procedure with low reproducibility and it directly affects the AAR; thus each laboratory must assess its own cut-off value. Therefore, in the Adrenal Department of the Argentine Society of Endocrinology and Metabolism (SAEM, we performed this multicentric prospective study of a population of Argentina with the aim of assessing our own AAR cut-off level in normotensive controls in order to apply it for PHA screening in essential hypertensive patients. We studied 353 adult subjects: 104 controls, aged 45,18 ± 13,78 years-old ( X±SD, with no history of arterial hypertension in their first-degree relatives and with two separate day-registry of blood pressure≤ 139/85 mmHg and 249 hypertensive patients, aged 51± 13,6 years-old ( X ± SD, with arterial blood pressure≥ 140/90 mmHg in the sitting position. Subjects with cardiac, renal, hepatic and neurological diseases were excluded as well as those with Cushing´s syndrome, hyperthyroidism, untreated hypothyroidism, diabetes mellitus and patients under glucocorticoids, oral contraceptive pills or estrogen therapy. A normal sodium diet was indicated and potassium was supplemented when needed. Blood was withdrawn between 8 and 10:00 a.m. with the subjects in the upright position. Aldosterone (A was determined by DPC radioimmunoassay (RIA and PRA, by DIA-Sorin RIA. The A normal levels are 4-30 ng

  18. Actividad antioxidante de compuestos aislados del residuo no-volátil del aceite esencial de naranja

    OpenAIRE

    Vargas Arispuro, L.; Sanz, B. I.; Martínez Téllez, M. A.; Primo-Yúfera, Eduardo

    1998-01-01

    [ES] Existe un creciente interés en la industria alimentaria y en la medicina preventiva por la búsqueda de «antioxidantes naturales», por lo que nos planteamos evaluar la actividad antioxidante del residuo no volátil del aceite esencial de naranja contra la oxidación del aceite de oliva sin retinar y de reciente extracción. Mediante destilación del aceite esencial de naranja se obtuvo el residuo no-volátil, el cual se fraccionó en columna de silica gel 60. La actividad anti...

  19. Efecto del polimorfismo del receptor ? 2 adrenérgico sobre la respuesta antihipertensiva en pacientes con hipertensión esencial

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    Juan McEwen

    2004-02-01

    Full Text Available La hipertensión arterial esencial (HTE es uno de los principales factores de riesgo cardiovascular y generador indirecto de la enfermedad coronaria, la mayor causa de muertes en Colombia y el mundo [1].
    El Sistema Nervioso Simpático (SNS modifica la resistencia
    arterial periférica a través del receptor ? 2 adrenérgico,  generando señales intracelulares que regulan la relajación del
    músculo liso vascular. Este receptor experimenta un proceso
    denominado desensibilización, es decir, cuando es activado por
    un agonista por tiempo prolongado, la respuesta no será de la
    misma intensidad a la inicial. La desensibilización del receptor
    ? 2 parece estar determinada por la estructura de aminoácidos
    polimórficos: Arginina 16 Glicina y Ácido glutámico 27 Glutamina
    amino terminales. Estas variantes son codificadas por polimorfismos de un solo nucleótido (SNP 46 y 79. La función
    de estos polimorfismos y su efecto en la función vascular es
    controversial. Evidencias clínica e in vitro sugieren que la Glicina
    16 se desensibiliza mas rápido que la Arginina; igualmente, el
    Ácido glutámico 27 facilita la desensibilización versus
    glutamina[2].

  20. Tratamientos psicologicos en la hipertension arterial

    OpenAIRE

    Lilia Mabel Labiano; Claudia Brusasca

    2002-01-01

    En vista que las evidencias obtenidas acerca del beneticio percibido por los sujetos hipertensos leves con los tratamientos farmacológicos resultan conflictivas, se ha considerado importante para estos pacientes, la aplicación de intervenciones psicológicas y comportamentales. Se presentan en este trabajo, distintos tipos de tratamientos psicológicos que en los últimos años han demostrado su efectividad en la reducción de la presión arterial esencial. Se consideraron importantes para individu...

  1. Las Estrategias Competitivas: lo esencial para la Gestión Estratégica

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    Carlos Manuel Vilariño Corella

    2007-01-01

    Full Text Available conocimiento de donde radica su ventaja potencial aun estando presentes las restricciones del mercado, tomando en consideración que las dos estrategias básicas para lograr una ventaja competitiva en la magnitud deseada son: el liderazgo en los costos y la diferenciación. En el trabajo se señala que lo esencial radica en el desarrollo interno de la organización que es donde se define la verdadera relación de los procesos y se logra un efecto sinérgico a favor de la competitividad por lo que toda organización ha de tener bien definido como resultado de su propio diagnóstico que para lograr el éxito competitivo primeramente debe centrar la atención en las necesidades del mercado, la concentración en los mercados globales, generar el compromiso de mantener y aumentar la participación en el mercado y buscar alternativas como compromiso de inversiones, tanto en el desarrollo de nuevos productos, en investigaciones, en procesos que han de incluir lograr patentes y propiedad intelectual, las ventas, la seguridad y por sobre todo la calidad.

  2. Efecto del aceite esencial de Eucalyptus citriodora sobre el metabolismo energético mitocondrial

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    Luis Carlos Vesga

    2015-09-01

    Full Text Available Con el fin de contribuir al conocimientode su actividad a nivel celular, se evaluó elmecanismo de acción del aceite esencialde Eucalyptus citriodora (Fam. Myrtaceaesobre la bioenergética mitocondrial, su efectosobre la velocidad de consumo de oxígenode mitocondrias energizadas (estados 3 y4 y su coeficiente de control respiratorio(CCR. Además, se analizó la actividadde los complejos de la cadena respiratoriausando técnicas espectrofotométricas. Losresultados obtenidos indican que el aceiteesencial de E. citriodora aumenta la velocidaddel consumo de oxígeno en los estados 3 y 4,disminuye el CCR, desacopla la fosforilaciónoxidativa, aumenta la actividad de lacitocromo c oxidasa y aumenta la actividadATPasa en mitocondrias íntegras, a partirde la concentración de 10 μg/mL. Estosresultados sugieren que el aceite esencial osus metabolitos afectan el funcionamientonormal del transporte de electrones de lacadena respiratoria y la síntesis de ATP

  3. Arterial Catheterization

    Science.gov (United States)

    ... version AMERICAN THORACIC SOCIETY Patient Information Series Arterial Catheterization An arterial catheter is a thin, hollow tube ... PHYSICIANS: AND COPY Why Do I Need Arterial Catheterization? Common reasons an arterial catheterization is done include: ■ ...

  4. Intervención en el aula de Educación Física. Detección de alumnos con posibles problemas de coordinación motriz

    OpenAIRE

    Roncero Cárceles, Laura

    2013-01-01

    En el siguiente trabajo se darán a conocer y se analizarán los aspectos más importantes relacionados con la coordinación motriz que el alumno demuestra en la clase de Educación Física. Para ello es esencial conocer el desarrollo evolutivo del niño, así como conocer cómo éste se desenvuelve en el entorno que le rodea. En relación a la detección de alumnos con posibles problemas de coordinación se realizará una intervención con alumnos de 1º de Educación Primaria, mediante la aplicación de dive...

  5. Nash y von Neumann: mundos posibles y juegos de lenguaje

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    Salazar , Boris

    2004-06-01

    Full Text Available Este ensayo emplea las nociones de juego de lenguaje y de equivalencia entre juegos para examinar la decisión de John Nash de no jugar el juego coalicional que propuso John von Neumann. El argumento central es que Nash concibió una clase de mundos posibles incompatible con la de von Neumann, y que en el origen de esa divergencia estarían sus distintas nociones de racionalidad.

  6. Nash y von Neumann: mundos posibles y juegos de lenguaje

    OpenAIRE

    Salazar , Boris

    2004-01-01

    Este ensayo emplea las nociones de juego de lenguaje y de equivalencia entre juegos para examinar la decisión de John Nash de no jugar el juego coalicional que propuso John von Neumann. El argumento central es que Nash concibió una clase de mundos posibles incompatible con la de von Neumann, y que en el origen de esa divergencia estarían sus distintas nociones de racionalidad.

  7. Caracterización físico-química del aceite esencial de albahaca. ii

    OpenAIRE

    Murillo, Elizabeth; Fernandez, Katherine; Sierra, Diana; Viña, Amparo

    2008-01-01

    Se estudió la composición química del aceite esencial de Ocimum americanum L. (albahaca querendona morada) obtenido por hidrodestilación de vegetales recolectados en Chapetón-Ibagué. El análisis realizado por cromatografía de gases de alta eficiencia/detector selectivo de masas (HRGC/MSD) reveló que la esencia está constituida en un 85,4% por cinamato de metilo y un 5% de estragol. Adicionalmente, se caracterizó el aceite esencialmediante la determinación de la densidad, índice de refracción,...

  8. ESTUDIO DEL ACEITE ESENCIAL DE Lippia junelliana (MOLD) TRONC. OBTENIDO DE COLECTAS EN TUCUMÁN, ARGENTINA

    OpenAIRE

    Miguel A. Juárez; Miguel A. Elechosa; Molina, Ana M.; Carmen I. Viturro; Ana C. Molina; Cecilia I. Heit

    2007-01-01

    Se estudia la composición de los aceites esenciales por GC/FID y GC/MS de Lippia junelliana (Mold) Tronc., en poblaciones de la provincia de Tucumán, Argentina. Los resultados indican la existencia de quimiotipos diferenciados respecto a colectas de otras regiones. Los compuestos principales determinados en los aceites esenciales de las muestras colectadas en Las Lajitas y El Cajón y Río Nío son respectivamente limoneno-carvona y davanona y limoneno-piperitenona. El aceite esencial de la pobl...

  9. Introducción a la obtención de aceite esencial de limón

    OpenAIRE

    Mariano Cerutti; Fernando Neumayer

    2004-01-01

    Los aceites esenciales son mezclas complejas de sustancias que proporcionan sabor yolor a innumerables alimentos, aunque también son usados en la industria de la cosmética. Entre losaceites esenciales más difundidos se encuentra el del limón, siendo la Argentina uno de sus mayoresproductores en el mundo. En este artículo se mencionan los principales métodos de obtención deaceite esencial de limón y sus fundamentos

  10. Posibles escenarios mundiales de la educación superior

    OpenAIRE

    Francisco López Segrera

    2005-01-01

    El presente trabajo busca referirse a la significación de las reformas universitarias en el ámbito de las universidades públicas y privadas; proyectar algunos escenarios posibles de evolución de la educación terciaria; iluminar el dilema entre una internacionalización solidaria -a partir de la visión de la educación superior como un bien público- y la tendencia creciente hacia la transnacionalización mercantilista vía nuevos proveedores, y ofrecer algunas c...

  11. Imaginarios posibles en la arquitectura: neobarroco como estrategia proyectual

    OpenAIRE

    Elizabeth García García; Marianela Camacho Fuenmayor

    2009-01-01

    En el marco de la investigación CONDES Imaginarios posibles en la Arquitectura se propuso, como ejercicio de diseño arquitectónico, la realización de proyectos a partir de una reflexión teórico-crítica sobre el carácter neobarroco de la contemporaneidad. El objetivo fue explorar una poética semiótica generadora de los instrumentos que nos permitiera concebir lo neobarroco como estrategia proyectual. El objeto arquitectónico a proyectar debía imaginarse como un conjunto de formas, contenidos y...

  12. Arterial stick

    Science.gov (United States)

    ... the main arteries in the forearm (radial and ulnar arteries). The procedure is done as follows: The ... Arteries also have thicker walls and have more nerves. When the needle is inserted, there may be ...

  13. Posible sistema para captación de muestras ambientales

    Directory of Open Access Journals (Sweden)

    Chinchilla, M.

    1978-09-01

    Full Text Available The struggle agoinst the effects of environment pollution, owing to the human and industrial growth, requires the adoption of more effective corrective measures for which the availability of the most accurate and comprehensive Information is a necessary prerequisite. A proposed solution is presented for the collection of actual truly representative samples, using collecting capsules towed by radiocontrolled light airplanes, which permit the analysis, not only of the data relative to the emission point, but also of the many points in the surrounding area under the influence of such emission point.

    La lucha contra los efectos de la contaminación ambiental, debida al crecimiento humano e industrial, requiere adoptar las medidas correctoras más eficaces, para lo cual es necesario poder disponer de una información lo más exacta y completa posible. Como sistema para la captación de muestras reales verdaderamente representativas se expone una posible solución mediante el empleo de cápsulas receptoras, remolcadas por aviones ligeros radioguiados, lo que permite analizar no solamente los datos correspondientes al foco de emisión, sino en múltiples puntos del entorno influenciado.

  14. Un posible recinto campamental romano en O Cornado (Negreira, Galicia

    Directory of Open Access Journals (Sweden)

    Manuel Gago Mariño

    2015-02-01

    Full Text Available Presentamos en este artículo las evidencias y el contexto geográfico y arqueológico de una fortificación localizada en el municipio de Negreira (A Coruña y que por sus características puede corresponder a un posible campamento romano. El sitio arqueológico está ubicado en una zona de gran interés para comprender la romanización del occidente de Galicia, con actividad minera, asentamientos y vías de comunicación de la época. Las nuevas tecnologías LIDAR, el acceso abierto al «vuelo americano» de 1956 y otras bases de datos de imágenes aéreas, junto con técnicas más convencionales, han propiciado el hallazgo o, más bien, la propuesta de revisión cronológica y funcional de este yacimiento. El posible campamento podría pertenecer a una fase final o inmediatamente posterior de la conquista romana. This article presents the evidence and the geographical and archaeological context of a large fortress located in the municipality of Negreira (A Coruña and whose characteristics may correspond to a possible Roman camp. The archaeological site is located in an area of great interest (with minery, settlements and roads of those times, which help us to understand the Romanization of the western Gallaecia. New LIDAR technologies and open access to the 1956 «American flight» and other aerial imagery databases, combined with more traditional techniques have led to the discovery, or rather, to propose a chronological and functional requalification of this site. This new camp could have been built in the final phase of the Roman conquest or at the beginning of the Romanization process.

  15. Actividad antioxidante de compuestos aislados del residuo no-volátil del aceite esencial de naranja.

    Directory of Open Access Journals (Sweden)

    Vargas-Arispuro, L.

    1998-04-01

    Full Text Available There has been a growing interest in the food industry and in preventive medicine to search for «natural antioxidants». Therefore the objetive of this study was to evaluate the antioxidant activity of the non-volatile residue of essential orange oil in the oxidation of unrefined and freshly extracted olive oil. Essential orange oil was distilled to obtain a non-volatile residue and fracctionated on a Silica Gel 60 column. The antioxidant activity was determined by measuring peroxide value obtained after heating olive oil at 70 °C for 48 h. Six compounds were isolated and purified, four of these had antioxidant activity, α-tocopherol and three methoxylated flavones were identified using spectroscopic methods. This study confirmed that non-volatile fractions of essential orange oil contain natural antioxidants diferent from α-tocopherol.

    Existe un creciente interés en la industria alimentaria y en la medicina preventiva por la búsqueda de «antioxidantes naturales», por lo que nos planteamos evaluar la actividad antioxidante del residuo no volátil del aceite esencial de naranja contra la oxidación del aceite de oliva sin retinar y de reciente extracción. Mediante destilación del aceite esencial de naranja se obtuvo el residuo no-volátil, el cual se fraccionó en columna de silica gel 60. La actividad antioxidante fue medida por el valor de peróxidos producidos por el aceite de oliva al provocar la oxidación por calentamiento a 70 °C durante 48 h. Se aislaron seis compuestos mediante HPLC preparativo de los cuales cuatro tuvieron actividad antioxidante. Usando métodos espectroscópicos se identificaron α-tocoferol y tres flavonas metoxiladas. Con este estudio se confirmó que la fracción no volátil del aceite esencial de naranja contiene antioxidantes naturales diferentes al α-tocoferol.

  16. Uricemia y síndrome metabólico en pacientes con hipertensión arterial

    OpenAIRE

    López-Jiménez, M.; Vigil-Medina, L.; Condés Moreno, Emilia; García-Carretero, R.; Fernández-Mejías, C.; Ruiz-Galiana, J.

    2012-01-01

    Los niveles de uricemia se han asociado con el síndrome metabólico (SM). Sin embargo, la relación entre estas 2 variables en pacientes con hipertensión arterial (HTA) esencial no ha sido estudiada. Se realizó un estudio observacional, transversal, de 592 0,257 JCR (2012) Q2, posición 786 de 1840 (Medicine (miscellaneous))

  17. Actividad antimicótica in vitro y metabolitos del aceite esencial de las hojas de Minthostachys Mollis (muña

    Directory of Open Access Journals (Sweden)

    Carlos Cano

    2008-07-01

    Full Text Available Objetivos. Demostrar la actividad antimicótica in vitro y la elucidación de algunos de los metabolitos del aceite esencial de hojas de Minthostachys mollis (muña proveniente del distrito de Huacrapuquio (2700 msnm, Junín. Materiales y métodos. El aceite esencial se obtuvo por el método de destilación por arrastre de vapor de agua. Este fue sometido a análisis físico-químico y determinación de la composición química mediante cromatografía de gases. Mediante el método de agar en difusión se evaluó la inhibición del crecimiento fúngico de Candida albicans y también por el método de dilución en tubo para Trichophytun tonsurans, Trichophytun mentagrophytes, Microsporun canis. Resultados. Se encontraron los siguientes monoterpenos: pulegona, mentona, limoneno y mirceno. El aceite esencial de muña inhibió completamente el desarrollo de T. tonsurasn, T. mentagrophytes y M. canis con ambos métodos de evaluación y dosis, para C. albicans se logró un halo de inhibición de 30 mm para el aceite esencial al 100% y de 35 mm al 50%. Conclusiones. Se demostró la actividad antimicótica del aceite esencial de muña, probablemente por la acción de los monoterpenos encontrados.

  18. El derecho al desarrollo: fundamentación ética, biociudadanía y núcleo esencial

    OpenAIRE

    Hernández Umaña, Bernardo Alfredo

    2015-01-01

    Una de las maneras para hacer posible cambios locales con efectos globales, es mediante la educacion, pero no cualquier educacion toda vez que debera ser una educacion que suscitre el relevo de los viejos paradigmas cartesianos por el paradigma de la complejidad, dandole mayor importancia al dewscubrimiento de las emociones y a la educacion artistica como un ejercicio lwegitimo para que cada biociudadano se realice plenamente en esta Comunidad de la Vidam, y ello se logra con la elaboracion ...

  19. LA GLOBALIZACIÓN POSIBLE: LÍMITES Y ALTERNATIVAS

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    Alberto Romero

    2012-12-01

    Full Text Available En este artículo se analiza el concepto de globalización desde diferentes puntos de vista, su evolución, su soporte ideológico, sus límites y alternativas posibles. La investigación se basa en una revisión documental de los principales autores que han escrito sobre el tema. Se concluye que mientras persista el actual patrón de acumulación capitalista, sustentado en el carácter parasitario de la misma, el proceso de globalización no podrá desplegar todo su potencial positivo, sino que contribuirá a profundizar la brecha que separa a la mayoría de los países de un puñado de potencias en lo económico, lo científico, lo tecnológico, lo político y lo militar. Todo esto hace de la globalización un proceso incompleto y asimétrico.

  20. Imaginarios posibles en la arquitectura: neobarroco como estrategia proyectual

    Directory of Open Access Journals (Sweden)

    Elizabeth García García

    2009-01-01

    Full Text Available En el marco de la investigación CONDES Imaginarios posibles en la Arquitectura se propuso, como ejercicio de diseño arquitectónico, la realización de proyectos a partir de una reflexión teórico-crítica sobre el carácter neobarroco de la contemporaneidad. El objetivo fue explorar una poética semiótica generadora de los instrumentos que nos permitiera concebir lo neobarroco como estrategia proyectual. El objeto arquitectónico a proyectar debía imaginarse como un conjunto de formas, contenidos y dinámicas capaces de proponer una estrategia comunicativa al usuario, determinadas por una estética barroca. El presente trabajo expone las interconexiones que esta experiencia ha revelado entre los conceptos formales propuestos por Omar Calabrese en su teoría La era neobarroca y la realidad socio-cultural presente en Maracaibo. La obra arquitectónica se reconoce parte de unos procesos que conciernen al conjunto de los mensajes que circulan en el territorio de la comunicación y que quedan a interpretación de la comunidad.

  1. Arterial Ageing

    OpenAIRE

    Lee, Seung-Jun; Park, Sung-Ha

    2013-01-01

    Arterial ageing is characterized by age associated degeneration and sclerosis of the media layer of the large arteries. However, besides ageing, clinical conditions, which enhance oxidative stress and inflammation act to accelerate the degree of arterial ageing. In this review, we summarized the pathophysiology and contributing factors that accelerate arterial ageing. Among them, we focused on hypertension, the renin-angiotensin-aldosterone system and vascular inflammation which are modifiabl...

  2. Acute arterial occlusion - kidney

    Science.gov (United States)

    ... arterial thrombosis; Renal artery embolism; Acute renal artery occlusion; Embolism - renal artery ... often result in permanent kidney failure. Acute arterial occlusion of the renal artery can occur after injury ...

  3. posible candidato para la Anemia Drepanocítica

    Directory of Open Access Journals (Sweden)

    Y.M. Trapero Quintana

    2005-01-01

    Full Text Available La Anemia Drepanocítica es una enfermedad genética sin tratamiento efectivo hasta el momento. Estudios preliminares biológicos, químicos y físicos han reportado que el 4- hidroxi-3-metoxibenzaldehído es un agente antisickling, por lo que podría ser eficaz en el tratamiento de esta enfermedad. Objetivo: determinar la toxicidad oral aguda del 4- hidroxi-3-metoxibenzaldehído. Método: se empleó el procedimiento alternativo de la guía 423 de la Organización para el Desarrollo y Cooperación Económica. Se utilizaron dos grupos de ratas wistar , al primero se le administró una dosis inicial de 2000 mg/Kg de peso corporal y el vehículo al grupo control. Se evaluaron parámetros hematológicos y bioquímicos. Se analizaron microscópica e histopatológicamente diferentes órganos y tejidos. Se determinaron las variaciones de peso los días 0,7 y 14 del estudio. Resultados Los parámetros hematológicos y bioquímicos se comportaron dentro de los rangos permisibles para esta especie. No se observaron diferencias significativas en el peso de los dos grupos. No hubo muertes. Aunque la Organización para el Desarrollo y Cooperación Económica, considera a este producto una Sustancia sin clasificar, en el presente estudio se observaron signos clínicos de toxicidad tales como: sedación, disnea, decremento de la actividad motora espontánea, tren posterior caído, disminución de los reflejos, ausencia de estímulos, piloerección, lagrimación. Además se observó daño en estómago asociado a la sustancia, lo que evidencia un posible efecto lesivo y alerta sobre la potencialidad tóxica de este producto

  4. Cromatografía de gases–espectrometría de masas de compuestos fitobioactivos del aceite esencial de Satureja incana

    OpenAIRE

    Joseph Ricaldi Sarapura; Alejandro Martínez Martínez

    2014-01-01

    Objetivos: Analizar la composición de fitobioactivos del aceite esencial de Satureja incana por cromatografía de gases acoplada a espectrometría de masas (GC-MS, por sus siglas en inglés); y determinar rendimiento extractivo y características físico-químicas del aceite esencial de Satureja incana. Métodos: Se colectó ramas tiernas en estado de floración, con cortes de 20-35 cm, ubicación de recolecta a una altitud 2 682 msnm; distrito de Palca, provincia Tarma, región Junín. Extracción: equip...

  5. Estudio in vitro de la viabilidad de células Caco-2 en presencia de componentes del aceite esencial de Allium spp

    OpenAIRE

    M. Llana Ruiz-Cabello; Puerto, M.; D. Gutiérrez-Praena; S. Pichardo; Jos, A.; Cameán, A. M.

    2013-01-01

    El aceite esencial de los componentes del género Allium, principalmente ajo y cebolla, presenta propiedades antioxidantes y antibacterianas debidas a la presencia de compuestos azufrados en su composición. La industria alimentaria ha comenzado a desarrollar nuevos sistemas de envasado activo a partir de polímeros seleccionados, a los que se incorporan aceites esenciales que, por sus propiedades, contribuyen a aumentar la vida útil de los alimentos perecederos. En este sentido, se hace necesar...

  6. El Marketing Esencial Latinoamericano

    OpenAIRE

    Jose Antonio Paris

    2013-01-01

    La definición de producto de acuerdo a la escuela clásica del marketing tradicional se refiere a cualquier objeto, servicio o idea en un mercado que cubra o satisfaga una necesidad humana. Esta conceptualización que utiliza el marketing tradicional de la escuela angloamericana proviene del área contable y de la economía y fue impuesto por quienes son sus máximos exponentes: Jerome McCarthy, Theodore Levy y Philip Kotler; y luego fue reimpulsado por quienes actuaron como representantes de esta...

  7. El Marketing Esencial Latinoamericano

    Directory of Open Access Journals (Sweden)

    Jose Antonio Paris

    2013-04-01

    Full Text Available La definición de producto de acuerdo a la escuela clásica del marketing tradicional se refiere a cualquier objeto, servicio o idea en un mercado que cubra o satisfaga una necesidad humana. Esta conceptualización que utiliza el marketing tradicional de la escuela angloamericana proviene del área contable y de la economía y fue impuesto por quienes son sus máximos exponentes: Jerome McCarthy, Theodore Levy y Philip Kotler; y luego fue reimpulsado por quienes actuaron como representantes de esta escuela: Willian Stanton, David L. Kurtz, Charles W. Lamb, Carl McDaniel, entre otros. Ahora, Kotler[1] suma a esta definición el ciclo completo del producto comercial, aunque no habla de la disposición final de sus residuos. Como se ve es una expresión que ‘cosifica a la cosa’, es decir, la hace totalmente materialista. Sin embargo, desde nuestra óptica esta definición se adapta perfectamente a los mercados de consumo e hiperconsumo como son los mercados angloamericanos, donde las personas parecieran existir sólo en el momento de consumir. Es decir, según nuestro punto de vista pareciera que ‘los angloamericanos son consumidores, que pretenden ser personas mediante el consumo’, de hecho se puede decir que en estos mercados podría ser válida, si se quiere, la siguiente expresión: ‘consumo, luego existo’. Por ejemplo, en la perspectiva clásica de marketing de transacción Hingley y Lindgreen[2] consideran que los compradores tienden a considerarse como actores que buscan soluciones a una necesidad genérica por lo que los vendedores presentan también una oferta genérica.

  8. Evaluación del trabajo esencial de fractura en chapa de un acero de alta resistencia de fase dual

    Directory of Open Access Journals (Sweden)

    Gutiérrez, D.

    2013-02-01

    Full Text Available Fracture toughness of advanced high strength steels (AHSS, can be used to optimize crash behavior of structural components. However it cannot be readily measured in metal sheet because of the sheet thickness. In this work, the Essential Work of Fracture (EWF methodology is proposed to evaluate the fracture toughness of metal sheets. It has been successfully applied in polymers films and some metal sheets. However, their information about the applicability of this methodology to AHSS is relatively scarce. In the present work the fracture toughness of a Dual Phase (strength of 800 MPa and drawing steel sheets has been measured by means of the EWF. The results show that the test requirements are met and also show the clear influence of notch radii on the measured values, specially for the AHSS grade. Thus, the EWF is postulated as a methodology to evaluate the fracture toughness in AHSS sheets.

    La tenacidad de fractura de aceros de alta resistencia (AHSS, es una propiedad interesante para optimizar el comportamiento a impacto, pero su caracterización experimental en chapas metálicas es compleja debido a su espesor. En este trabajo se plantea el método del Trabajo Esencial de Fractura (TEF, como alternativa al cálculo de la tenacidad. Este método ya ha sido utilizado con éxito en polímeros y aceros dúctiles, aunque la información sobre su aplicación en AHSS es escasa. Se ha evaluado la tenacidad en un acero de fase dual de 800 MPa de resistencia y se ha comparado con la de un acero de embutición. Los resultados muestran que se cumplen los requisitos del método y ponen en evidencia la influencia del radio de entalla en el valor obtenido de TEF, especialmente para AHSS. Con todo ello, el método TEF se puede usar para caracterizar la tenacidad de AHSS en formato chapa.

  9. Evaluación in vivo del potencial mutagénico de los quimiotipos Estragol y Eugenol del aceite esencial de Ocimum selloi Benth.

    OpenAIRE

    Paula Josiane de F.P. de; Paulo V. Farago; Ribas, Joao Luiz C.; Spinardi, Gisele Mara S.; Döll, Patricia M.; Artoni, Roberto F.; Zawadzki, Sónia F.

    2007-01-01

    Se determinó la composición química y la mutagenicidad de los aceites esenciales obtenidos de las hojas del Ocimum selloi Benth, perteneciente a la familia Lamiaceae, nativos de la región sur de Brasil. Para el estudio se utilizaron técnicas de cromatografía gaseosa capilar acoplada a espectrometría de masas (GC/MS). Para la evaluación de la mutagenicidad in vivo se utilizó el ensayo de micronúcleos en médula ósea de ratones Wistar. Del aceite esencial nominado quimiotipo A, fueron identifica...

  10. Tratamiento de la psicosis esquizofrénica adaptado a las necesidades: El papel esencial de las reuniones terapéuticas centradas en la familia.

    OpenAIRE

    Räkköläinen, V.; Lehtinen, K.; YO Alanen

    1991-01-01

    El tratamiento de la psicosis adaptado a las necesidades se basa en una orientación psicoterapéutica. Su planificación y aplicación se realiza a nivel individual, en cada caso, combinando distintas actividades para hacer frente a las necesidades de cada paciente, así como de las personas que constituyen su red interactiva personal (normalmente la familia). Una parte esencial de este tratamiento radica en una intervención inicial sistémica, consistente en una sesión conjunta del paciente, los ...

  11. El Aceite esencial de limón producido en España. Contribución a su evaluación por Organismos Internacionales

    OpenAIRE

    Albaladejo Meroño, Querubina

    2000-01-01

    En este trabajo, además de las determinaciones habituales de características físico-químicas del aceite esencial de limón, se introducen las de color mediante el colorímetro digital, y de densidad, mediante densímetro electrónico. El estudio gascromatográfico, para determinar el orden de elución característico, se realiza en columnas capilares de sílice fundida: OV-101 apolar, CPWax-52-CB muy polar y HP-5 ligeramente polar. Comparando los resultados se logra la identificación de setenta y cua...

  12. Función de los canales de K+ y Ca2+ en un modelo de hipertensión esencial

    OpenAIRE

    Tajada Esteban, Sendoa

    2013-01-01

    En este trabajo se han investigado los mecanismos que provocan la disfunción vascular en un modelo de ratón con hipertensión genética. La hipertensión esencial implica un aumento gradual y sostenido de las resistencias periféricas, lo que provoca un tono vascular aumentado. Este cambio se asocia con una despolarización de las células del músculo liso vascular (Vascular Smooth Muscle Cells, VSMCs) y se produce como consecuencia de un cambio en el perfil de expresión de los canales iónicos depe...

  13. Efecto antimicrobiano del orégano mexicano (lippia berlandieri Schauer) y de su aceite esencial sobre cinco especies del género vibrio

    OpenAIRE

    María de la Cruz Paredes Aguilar; María Guadalupe Gastélum Franco; Ramón Silva Vázquez; Guadalupe Virginia Nevárez-Moorillón

    2007-01-01

    Las nuevas tendencias de la población hacia el consumo de productos naturales han llevado a investigar y desarrollar nuevas formas de conservación, para evitar las intoxicaciones relacionadas con los aditivos químicos. En este trabajo se evaluó el efecto antimicrobiano del orégano mexicano (Lippia berlandieri Schauer) y su aceite esencial, sobre Vibrio alginolyticus, V. cholerae no-01, V. mimicus, V. parahaemolyticus y V. vulnificus. Se determinaron las concentraciones mínim...

  14. El Mejor Self Posible: Una intervención dirigida a generar emociones positivas. Resultados preliminares

    OpenAIRE

    Enrique Roig, Ángel; Molinari, Guadalupe; Miralles Tena, Ignacio; Gisbert Muñoz, Sandra; Bretón-López, Juana

    2015-01-01

    La vivencia de emociones positivas promueve un pensamiento más abierto y flexible y nos fortalece frente a la adversidad. Desde el campo de la psicología positiva se han desarrollado diferentes estrategias que potencian la aparición de emociones positivas. Una de estas intervenciones es imaginar el Mejor Self Posible, una técnica de pensamiento futuro positivo que requiere que la persona se visualice en un futuro en el que todo se ha desarrollado del mejor modo posible. El obje...

  15. ¿es posible justificar el principio de uniformidad de la naturaleza?

    OpenAIRE

    Ordóñez Pinilla, Camilo Andrés

    2010-01-01

    Una de las tesis que intenta mostrar David Hume con sus argumentos escépticos acerca de la inducción es la imposibilidad de justificar el principio de uniformidad de la naturaleza. En el presente artículo se buscará mostrar: primero, que el argumento que da Hume para tal tesis es inválido. Segundo, que es posible construir un argumento correcto que muestre tal tesis. Tercero, que si bien es imposible justificar con un argumento deductivo el principio de uniformidad de la naturaleza, es posibl...

  16. Comportamento da pressão arterial após exercícios contra-resistência: uma revisão sistemática sobre variáveis determinantes e possíveis mecanismos Comportamiento de la presión arterial después de ejercicios contra resistencia: una revisión sistemática sobre variables determinantes y posibles mecanismos Blood pressure behavior after counter-resistance exercises: a systematic review on determining variables and possible mechanisms

    Directory of Open Access Journals (Sweden)

    Marcos Doederlein Polito

    2006-12-01

    Full Text Available A hipotensão pós-exercício (HPE é um fenômeno com elevada relevância clínica, mas que ainda apresenta aspectos duvidosos em relação às variáveis que podem contribuir para sua manifestação. A dúvida é maior quando o exercício contra-resistência é aplicado com intuito de proporcionar HPE. Nesse sentido, o objetivo deste estudo foi rever algumas variáveis do exercício contra-resistência que podem estar associadas à HPE. Além disso, foram comentados alguns mecanismos fisiológicos possivelmente relacionados com esse efeito. Encontraram-se 14 referências abrangendo o exercício contra-resistência e a HPE. Seis estudos observaram efeito hipotensivo para a pressão arterial sistólica (PAS e/ou diastólica (PAD após o exercício contra-resistência. Contudo, foi observado que alguns estudos não identificaram diferenças significativas (p > 0,05 para PAS e PAD (n = 4 ou até relataram aumento significativo (p La hipertensión después del ejercicio (HPE es un fenómeno con elevada relevancia clínica, pero aún si presenta aspectos dudosos en relación a las variables que pueden contribuir para su manifestación. La duda es mayor cuando el ejercicio contra resistencia es aplicado con el intuito de proporcionar HPE. En ese sentido, el objetivo de este estudio ha sido el de rever algunas variables del ejercicio contra resistencia que pueden estar asociadas a la HPE. Además de esto, fueron comentados algunos mecanismos fisiológicos, posiblemente relacionados con ese efecto. Se encontró 14 referencias abarcando el ejercicio contra resistencia y la HPE. Seis estudios observaron el efecto hipotensivo para la presión arterial sistólica (PAS y/o diastólica (PAD después del ejercicio contra resistencia. A pesar de eso, se observó que algunos estudios no identificaron diferencias significativas (p > 0,05 para PAS y PAD (n = 4 o hasta reportaron aumento significativo (p Post-exercise hypotension (PEH is a phenomenon with high

  17. Carotid Artery Screening

    Science.gov (United States)

    ... Resources Professions Site Index A-Z Carotid Artery Screening What is carotid artery screening? Who should consider ... about carotid artery screening? What is carotid artery screening? Screening examinations are tests performed to find disease ...

  18. Otra teología es posible. Pluralismo religioso, interculturalidad y feminismo [book review

    OpenAIRE

    Salazar Benítez, Octavio

    2012-01-01

    Este artículo reseña: Juan José Tamayo Acosta, Otra teología es posible. Pluralismo religioso, interculturalidad y feminismo, Biblioteca Herder, Barcelona, 2011, 406 pp. teología, pluralismo, interculturalidad Keywords: theology, pluralism, interculturality

  19. Bioactivity of Lantana camara L. essential oil against Callosobruchus maculatus (Fabricius Bioactividad de aceite esencial de Lantana camara L. contra Callosobruchus maculatus (Fabricius

    Directory of Open Access Journals (Sweden)

    Nooshin Zandi-Sohani

    2012-12-01

    Full Text Available Lantana camara L. is a widespread plant species mostly native to subtropical and tropical regions of the world. In this study, insecticidal and repellent activities of L. camara essential oil were evaluated against Callosobruchus maculatus (Fabricius (Col: Bruchidae. Analysis of chemical composition by gas chromatography/mass spectrometry (GC/MS showed high amounts of sesquiterpenes, mainly α-humelene (23.3% and cis-caryophyllene (16.2%. The results showed that the essential oil of L. camara has strong repellent activity against adults of C. maculatus at all tested concentrations. After 2 and 4 h, 97.4 and 100% repellency was seen at highest concentrations of 0.4 μL cm-2, respectively. Moreover, the oil was found to be toxic to adults when applied by fumigation. Responses varied with the gender of insect and exposure time. The LC50 values were 282.7 and 187.9 μL L-1 for females and males, respectively. An increase in the exposure time from 3 to 24 h caused increasing in mortality from 23.6 to 100% in males and from 14.1 to 97.1% in females, at highest concentration (1160 μL L-1. According to these results, L. camara essential oil may be useful as an alternative for bean protection against C. maculatus.Lantana camara L. es una especie vegetal nativa de las regiones subtropicales y tropicales del mundo. En este estudio se evaluaron las actividades insecticida y repelente del aceite esencial de L. camara contra Callosobruchus maculatus (Fabricius. El análisis de la composición volátil de este aceite esencial mediante cromatografía de gas/ espectrometría de masa (GC/MS demostró la presencia de elevadas cantidades de sesquiterpenos, principalmente α-humuleno (23.3% y ci's-cariofileno (16.2%. Los resultados obtenidos demostraron que el aceite esencial de L. camara tiene una elevada actividad repelente contra los adultos de C. maculatus a todas las concentraciones ensayadas. Después de 2 y 4 h la concentración de 0.4 μL cm-2 causó 97

  20. Cromatografía de gases–espectrometría de masas de compuestos fitobioactivos del aceite esencial de Satureja incana

    Directory of Open Access Journals (Sweden)

    Joseph Ricaldi Sarapura

    2014-12-01

    Full Text Available Objetivos: Analizar la composición de fitobioactivos del aceite esencial de Satureja incana por cromatografía de gases acoplada a espectrometría de masas (GC-MS, por sus siglas en inglés; y determinar rendimiento extractivo y características físico-químicas del aceite esencial de Satureja incana. Métodos: Se colectó ramas tiernas en estado de floración, con cortes de 20-35 cm, ubicación de recolecta a una altitud 2 682 msnm; distrito de Palca, provincia Tarma, región Junín. Extracción: equipo extractor de acero inoxidable, tiempo 1 hora. Caracterización físico-química: Norma Técnica Peruana. Análisis GC-SM: gas helio flujo 20 ml.min-1, inyección de 0,2 μl de aceite esencial, configuración térmica en gradiente. Resultados: El rendimiento de extracción fue 0,49 base seca con densidad relativa 0,9816; índice de refracción 1,4879 e índice de acidez 1,9860; y la composición fitoquímica: predomina concentración sesquiterpenica 66,37 % y monoterpenos 30,07 %; siendo los compuestos mayoritarios: germacreno D 25,91 %, β cariofileno 22,10 %, α-ocimeno 12,62 %, 4(8-p-mentona 6,73 %, humuleno 3,95 %, cariofileno óxido 3,08 %, limoneno 2,44 %; y minoritarios: β-bourbeneno 1,95 %, β-ocimeno 1,78 %, espatulenol 1,66 %, β-linalol 1,64 %, dlisopulegol 1,66 %, α-cubebeno 1,51 %, δ-Cadineno 0,89 %, α-pineno 0,45 %, β-pineno 0,52 %. Conclusiones: La presencia de algunos compuestos químicos respalda su uso etnofitofarmacobotánico. Presenta potencial característica para utilizarlo en formulaciones para plaguicidas debido a la presencia de germacreno D en alta concentración.

  1. Salidas posibles

    Directory of Open Access Journals (Sweden)

    Lucas Rubinich

    2010-07-01

    Full Text Available Comentarios a propósito de No entendía nada de política: La salida política de un dirigente barrial a partir de la urbanización de una villa en La Matanza de María Cecilia Ferraudi Curto.

  2. Salidas posibles

    OpenAIRE

    Lucas Rubinich

    2010-01-01

    Comentarios a propósito de No entendía nada de política: La salida política de un dirigente barrial a partir de la urbanización de una villa en La Matanza de María Cecilia Ferraudi Curto.

  3. Investigar en la clase de historia: ¿posible, deseable o quimérico?

    OpenAIRE

    González, María Paola; Massone, Marisa; Román, Viviana

    2002-01-01

    ¿Es posible realizar trabajos de investigación en el área de las ciencias sociales en la escuela? ¿En qué medida es viable reproducir en la enseñanza media los pasos del conocimiento científico? De ser posible, ¿es deseable ensayar una investigación en el aula? Estas preguntas han sido el punto de partida de nuestro proyecto de investigación y el objetivo del presente artículo. Antes que dar una respuesta cerrada a cada una de ellas, el propósito es reflexionar sobre la investigación en el au...

  4. Psicoanálisis e historia de las mentalidades. una posible aproximación

    OpenAIRE

    Mario Elkin Ramírez.

    2010-01-01

    Es posible una aproximación conceptual, epistémica y de investigación de los mismos objetos, entre el psicoanálisis y la historia de las mentalidades? Es la pregunta de la que parte este artículo, donde se presenta una serie de ideas que hacen aún parte de una cartografía que apenas se levanta en ciencias humanas, y cuya potencia explicativa comenzamos a vislumbrar.

  5. Identificación de posibles dianas terapeúticas para el tratamiento de la leucemia

    OpenAIRE

    Colombo Canut, Mario

    2016-01-01

    En el presente trabajo se presenta un workflow para identificar posibles dianas terapeúticas para una determinada patología utilizando las bases de datos públicas. En el present treball es presenta un workflow per identificar possibles dianes terapèutiques per a una determinada patologia utilitzant les bases de dades públiques. This project presents a workflow to identify potential therapeutic targets for a given pathology using public databases.

  6. Psicoanálisis e historia de las mentalidades. Una posible aproximación

    Directory of Open Access Journals (Sweden)

    Mario Elkin Ramírez

    2010-08-01

    Full Text Available Es posible una aproximación conceptual, epistémica y de investigación de los mismos objetos, entre el psicoanálisis y la historia de las mentalidades? Es la pregunta de la que parte este artículo, donde se presenta una serie de ideas que hacen aún parte de una cartografía que apenas se levanta en ciencias humanas, y cuya potencia explicativa comenzamos a vislumbrar.

  7. Estudio in vitro de la viabilidad de células Caco-2 en presencia de componentes del aceite esencial de Allium spp

    Directory of Open Access Journals (Sweden)

    M. Llana Ruiz-Cabello

    2013-01-01

    Full Text Available El aceite esencial de los componentes del género Allium, principalmente ajo y cebolla, presenta propiedades antioxidantes y antibacterianas debidas a la presencia de compuestos azufrados en su composición. La industria alimentaria ha comenzado a desarrollar nuevos sistemas de envasado activo a partir de polímeros seleccionados, a los que se incorporan aceites esenciales que, por sus propiedades, contribuyen a aumentar la vida útil de los alimentos perecederos. En este sentido, se hace necesario evaluar la seguridad asociada al uso de estas sustancias en envases alimentarios que van a estar en contacto con el consumidor a través del alimento. El objetivo del presente estudio fue determinar la citotoxicidad producida por dipropil sulfuro y dipropil disulfuro, dos de los componentes del aceite esencial de ajo y cebolla, en la línea celular Caco-2, células humanas procedentes de carcinoma de colon. Los biomarcadores ensayados fueron el contenido total de proteínas, la captación de rojo neutro y la reducción de la sal de tetrazolio (3-(4,5-dimetiltiazol-2-il-5-(3-carboximetoxifenil-2-(4sulfofenil-2H-tetrazolio. Las células fueron expuestas durante 2, 4 y 8 h a concentraciones comprendidas entre 0 y 200 µM. Los resultados no mostraron diferencias significativas frente al control para ninguno de los tres marcadores, lo que demuestra que bajo las condiciones de los ensayos ambos compuestos azufrados no son citotóxicos para esta línea celular gastrointestinal y podrían ser útiles en la industria alimentaria para desarrollar envases activos.

  8. USO DEL MÉTODO DE BIODESCODIFICACIÓN EN PACIENTES CON HIPERTENSIÓN ARTERIAL. CORTE EVALUATIVO A LOS 6 MESES / Use of biodecoding in patients with hypertension. Assessment at 6 months

    OpenAIRE

    Enric Corbera Sastre; Roxana Martínez Cardona; Juliette Massip Nicot; Abel Ventura Base; Eduardo Ramos Concepción; Idelfonso Hernández Céspedes; Esperanza Rubalcaba García; Rafael Marañón Arjona; Iliana Cabrera Rojo; Teddy Rivero Montes

    2013-01-01

    Resumen: Introducción y objetivos: La hipertensión arterial es un problema de salud a nivel mundial. Se recomienda actuar sobre el hipertenso de forma integral. Uno de los tratamientos a utilizar es la biodescodificación. El objetivo de esta investigación fue determinar la eficacia de la biodescodificación en el tratamiento de pacientes con hipertensión arterial esencial. Método: Estudio experimental, controlado, aleatorizado y prospectivo de corte longitudinal durante 6 meses, en pacientes h...

  9. Carotid Artery Disease

    Science.gov (United States)

    ... brain with blood. If you have carotid artery disease, the arteries become narrow, usually because of atherosclerosis. ... one of the causes of stroke. Carotid artery disease often does not cause symptoms, but there are ...

  10. Mesenteric artery ischemia

    Science.gov (United States)

    Mesenteric artery ischemia occurs when there is a narrowing or blockage of one or more of the three major arteries that ... that supply blood to the intestine causes mesenteric ischemia. The arteries that supply blood to the intestines ...

  11. Otra educación es posible: nuevas metodologías activas y TIC

    OpenAIRE

    Ciudad-Real, Ginés

    2016-01-01

    Estudio de la situación actual de la escuela, posibles cambios e introducción de nuevas metodologías como guía hacia el aprendizaje vivencial, crítico y creativo. Aplicación práctica en el aula de la teoría de las Inteligencias Múltiples, descripción de herramientas para su desarrollo Introducción de las TIC en el aula como herramienta indispensable para el desarrollo de las inteligencias múltiples, promoviendo la innovación, el emprendimiento y l...

  12. ¿Es posible un Acuerdo Fiscal Federal Sustentable sin una Reforma del Sistema Tributario Federal?

    OpenAIRE

    Piffano, Horacio Luis Pablo

    2010-01-01

    El trabajo explora la viabilidad de un posible nuevo acuerdo del Sistema de Coordinación Fiscal y Financiera Federal en Argentina y apunta a corroborar la hipótesis que el mismo no sería factible en sentido sustentable en el largo plazo sin una Reforma del Sistema Tributario Federal, en particular, una reforma que conlleve la eliminación de la Retenciones a las exportaciones de la producción rural. Ello posibilitaría un mayor grado de desarrollo de las economías regionales y una consecuente m...

  13. DESHIDRATACION Y SOBREHIDRATACION VOLUNTARIAS DURANTE EL EJERCICIO EN EL CALOR: POSIBLES FACTORES RELACIONADOS

    OpenAIRE

    Andrea Solera Herrera; Luis Fernando Aragón Vargas

    2006-01-01

    Los efectos negativos de la deshidratación sobre la salud y el rendimiento han sido bien documentados. Recientemente, también se han documentado problemas por sobrehidratación. La presente investigación se hizo para estudiar los posibles factores que influyen sobre la ingesta voluntaria de líquido durante el ejercicio y determinar si existe relación entre el grado de deshidratación voluntaria y la creencia de que la ingesta de líquido provoca cólico. Para ello, se contó con 94 estudiantes uni...

  14. POSIBLES PAUTAS PARA UNA ACCIÓN VITAL SOBRE EL DETERIORO

    OpenAIRE

    Juan José Tuset Davó

    2011-01-01

    RESUMEN La creciente acumulación de residuos nos plantea posibles pautas para intervenir el nuevo entorno cambiante. Este pensar implica buscar y definir modelos que permitan enfrentarnos a las arquitecturas sin uso. Previo a su demolición o rehabilitación, podemos establecer como actitud ética la preservación y exaltación de la vida natural de toda construcción del hombre. Para ello, nos instruimos de los modelos válidos acometidos en proyectos de paisaje y, especialmente, de jardín porque, ...

  15. Posibles usos y limitaciones del RNA codificante y no codificante en estudios forenses

    OpenAIRE

    Devesa Peiró, Almudena

    2015-01-01

    el análisis de distintos tipos de RNA (especialmente del mRNA y el miRNA) podría ser empleado en investigaciones criminales y estudios forenses postmortem con el objetivo de aportar información complementaria al análisis de los perfiles STR de DNA. Entre las aplicaciones posibles del mRNA se encuentran: a) la identi ficación de fluidos biológicos, b) la determinación de la causa y circunstancias de la muerte, c) el establecimiento de la antigüedad de...

  16. Una aproximación posible al modelo “Una computadora, un alumno”

    OpenAIRE

    Dughera, Lucila

    2012-01-01

    El discurso acerca de las tecnologías digitales e Internet ligado a la problemática de la brecha digital y, con ella, a los saberes que se requieren y las estrategias o los mejores caminos para incorporarlas a la institución educativa han cobrado relevancia tanto en la escena nacional como internacional. Aquí, se selecciona un tipo de incorporación posible, específicamente, el modelo “una computadora, un alumno” o “uno a uno”. Se parte del supuesto que aunque la denominación del modelo alude ...

  17. Insecticidal Activity of Peumus boldus Molina Essential Oil against Sitophilus zeamais Motschulsky Actividad Insecticida del Aceite Esencial de Peumus boldus Molina sobre Sitophilus zeamais Motschulsky

    Directory of Open Access Journals (Sweden)

    Jessica Betancur R

    2010-09-01

    Full Text Available In stored grains, the main agents diminishing production are insects, which can produce losses between 20% and 80% before harvest or under storage. The insecticidal properties of the essential oil of fresh leaves of Peumus boldus Molina against maize weevil (Sitophilus zeamais Motschulsky adults were determined under laboratory conditions. The highest mortality (100% was achieved at 4% concentration by contact with a treated glass surface. The same concentration in impregnated corn (Zea mays L. grain, resulted in 98.7% mortality. Mortality by fumigant action at 6 h was 100% with 35 µL oil in 0.15 L (air volume. Concentrations 1, 2 and 4% of essential oil produced 0% F1 adult emergence. At 10 d of residual effect, the 4% concentration reached 63.7% mortality. All treatments were repellent to adults of S. zeamais and corn grain germination was not affected by any treatment.Los principales agentes que disminuyen la producción en los granos almacenados son los insectos, antes de la cosecha y en el almacenamiento pueden causar pérdidas de 20 a 80%. Se evaluaron las propiedades insecticidas del aceite esencial de hojas frescas de Peumus boldus Molina para el control de adultos de gorgojo del maíz (Sitophilus zeamais Motschulsky en laboratorio. La mayor mortalidad (100% por contacto con una superficie de vidrio tratada se obtuvo con la concentración de 4%. Esta misma concentración produjo 98,7% de mortalidad en exposición a grano de maíz (Zea mays L. tratado. El efecto fumigante a las 6 h de exposición fue 100% con 35 µL de aceite en 0,15 L (volumen de aire. Con las concentraciones de 1, 2 y 4% de aceite esencial, el porcentaje de emergencia de la F1 fue 0%. A los 10 d de efecto residual se alcanzó 63,7% de mortalidad con la concentración de 4%. Todos los tratamientos fueron repelentes para adultos de S. zeamais y ningún tratamiento afectó la germinación de los granos.

  18. Actividad antimicrobiana del aceite esencial y crema de Cymbopogon citratus (DC. Stapf Antimicrobial activity of essential oil and cream of Cymbopogon citratus (DC. Stapf

    Directory of Open Access Journals (Sweden)

    Marta Guerra Ordóñez

    2004-08-01

    Full Text Available Se evaluó la actividad antimicrobiana in vitro del aceite esencial de Cymbopogon citratus (DC. Stapf (caña santa o hierba de limón, especie medicinal cultivada en Cuba, así como de una crema elaborada a partir del mismo. Se empleó el método de diluciones en medio líquido. Se determinó la concentración mínima inhibitoria y mínima microbicida frente a microorganismos de interés clínico humano. Considerando el uso propuesto a la formulación fue necesario conocer su potencial irritante. En este caso, se procedió según las Normas ISO descritas al efecto. La caracterización del aceite esencial reveló la presencia de citral como componente mayoritario. El aceite mostró una notable actividad antifúngica, superior a la que se observó con la crema, lo que justifica el uso tradicional de esta planta en Cuba. La formulación desarrollada resultó no irritante y se propuso usar como antidermatofítica. La especie microbiana más sensible resultó ser Trichophyton rubrum.The in vitro antimicrobial activity of the essential oil of Cymbopogon citratus (DC. Stapf (lemon grass, a medicinal species cultivated in Cuba, as well as of an ointment prepared from it, was evaluated. The dilution method in liquid medium was used. The minimum inhibitory and the minimum microbicidal concentration against microorganisms of human clinical interest was determined. Taking into account the use proposed for the formulation, it was necessary to know its irritating potential. In this case, it was proceeded according to the ISO Norms described to this end. The characterization of the essential oil reveals the presence of citral as the most abundant component. The oil showed a significant antifungal activity, higher than the observed with the ointment, which justify the traditional use of this plant in Cuba. The formulation developed proved to be non irritating and it was suggested to use it as antidermatophytic. The most sensitive microbial species was

  19. Sodio intercambiable y sistema renina en la insuficiencia renal crónica y en la hipertensión arterial

    OpenAIRE

    Botey Puig, Albert

    1980-01-01

    [spa] El objetivo de esta tesis doctoral es aportar nuevos datos sobre el grado de participación del sodio y el sistema renina-angiotensina en los diferentes tipos de hipertensión. En ella se valora el equilibrio sódico del organismo, el eje renina-angiotensina-aldosterona, la relación entre ambos y de cada uno de ellos respecto a la tensión arterial, en la insuficiencia renal crónica y en la hipertensión tanto esencial como secundaria. Para ello se estudia el sodio intercambiable y el volume...

  20. Aspectos importantes a la hora de definir posibles escenarios para proyectos bpm

    Directory of Open Access Journals (Sweden)

    Yeilin Martínez Torres

    2011-10-01

    Full Text Available A través del modelado de las actividades y procesos puede lograrse un mejor entendimiento del negocio y muchas veces esto presenta la oportunidad de mejorarlos. La automatización de los procesos reduce errores, asegurando que los mismos se comporten siempre de la misma manera y dando elementos que permitan visualizar el estado de los mismos. La administración de los procesos permite asegurar que los mismos se ejecuten eficientemente, y la obtención de información que luego puede ser usada para mejorarlos. Es a través de la información que se obtiene de la ejecución diaria de los procesos, que se puede identificar posibles ineficiencias en los mismos, y actuar sobre las mismas para optimizarlos, por lo que de cada empresa es muy importante para implementar en ella Business Process Management (BPM conocer y tener identificado sus procesos de ahí el estudio de casos de empresas que lo utilizan y la definición de posibles escenarios donde implementar BPM.

  1. El razonamiento analógico verbal: una habilidad cognitiva esencial de la producción escrita (Verbal analogical reasoning: an essential cognitive ability of written production)

    OpenAIRE

    Ricardo Benítez Figari; Georgina García Escala

    2010-01-01

    La escritura promueve en los sujetos la capacidad de razonar en y con el lenguaje: el metalenguaje (Ravid y Tolchinsky, 2002). Esta habilidad requiere de conocimientos lingüísticos y de habilidades cognitivas para un desarrollo acorde. Uno de los componentes centrales de la cognición es la capacidad de razonar en forma analógica (Goswami y Brown, 1990). El presente trabajo tiene como propósito indagar una posible relación entre ambas variables: producción textual y razonamiento analógico verb...

  2. Actividad de polvo, extractos y aceite esencial de Peumus boldus Molina solos y en mezcla con Bacillus thuringiensis Berliner contra Spodoptera frugiperda (J.E. Smith) y Helicoverpa zea (Boddie).

    OpenAIRE

    Silva Aguayo, Gonzalo Iván

    2010-01-01

    Se evaluaron en condiciones de laboratorio e invernadero las propiedades insecticidas del polvo, aceite esencial y extracto en cloruro de metileno de Boldo (Peumus boldus Molina), además del alcaloide boldina y el terpeno 1-8-cineol (eucaliptol), solos y en combinación con Bacillus thuringiensis Berliner contra larvas de Spodoptera frugiperda (J.E. Smith) y Helicoverpa zea Boddie. Se realizaron bioensayos para evaluar mortalidad, efecto en el ciclo de vida y las preferencias alimenticias de l...

  3. USO DE LA ECOGRAFÍA RENAL EN EL ESTUDIO DE LA HIPERTENSIÓN ARTERIAL.

    Directory of Open Access Journals (Sweden)

    Gerardo Torres Torres MD

    2004-01-01

    datos clínicos de interés en el estudio del paciente con hipertensión arterial, se hizo un estudio transversal, retrospectivo, poblacional de pacientes con hipertensión arterial. Se revisó el diagnóstico clínico de 236 pacientes con hipertensión, encontrando 205 con hipertensión esencial y 31 con hipertensión arterial secundaria. La edad media ± sd (standard deviation era de 57,2 ± 14 años. 117 (49.6% eran mujeres y 119 (50.4% eran varones. De estos pacientes fueron seleccionados aquellos que tenían realizada una ecografía renal, resultando una población de estudio de 121 pacientes, 93 de los cuales tenían hipertensión esencial y 28 hipertensión secundaria. La distribución de las variables principales fue similar a la de la población de base. La sensibilidad de la ecografía en la hipertensión secundaria es del 67,8% (IC 95: 51-84% (Ecografía Patológica Hipertensión secundaria y la especificidad de la ecografía normal en la hipertensión esencial es del 85% (IC 95: 77-92% (Ecografía normal Hipertensión esencial. El valor predictivo de una ecografía patológica para la hipertensión secundaria es del 57,6% (IC 95: 40-73% (Hipertensión secundaria Ecografía Patológica y el valor predictivo de una ecografía normal para la hipertensión esencial es del 89,7% (IC 95: 83-96% (Hipertensión esencial Ecografía normal En conclusión, la ecografía renal en el estudio de la hipertensión arterial no parece una prueba útil para descartar una hipertensión secundaria dado su bajo valor predictivo y, por otra parte, tiene poca utilidad clínica en el estudio de la hipertensión esencial ya que es altamente probable que sea normal (85%.

  4. Particularidades del alemán médico cotidiano y posibles malentendidos

    Directory of Open Access Journals (Sweden)

    Ortrun Riha

    2011-12-01

    Full Text Available Como parte del lenguaje oral, la terminología médica está sometida a cambios constantes que provocan malentendidos no solo entre pacientes y médicos, sino también entre los propios especialistas. En este artículo se exponen distintos tipos de problemas comunicativos derivados de la práctica de la medicina, como las interpretaciones erróneas, las palabras con más de un significado posible (diferencias sobre todo entre la lengua general y el lenguaje médico especializado, la jerga médica, la ocultación deliberada de cara al paciente, abreviaturas ambiguas o anglicismos imprecisos.

  5. Posibles factores de riesgo de los peces epicontinentales de México ante el calentamiento global

    Directory of Open Access Journals (Sweden)

    M. Y. De la Vega-Salazar

    2011-01-01

    Full Text Available México puede ser vulnerable al calentamiento global (cg por encontrarse en la zona de transición de las regiones biogeográficas Neártica (naA y Neotropical (nt. El estudio presenta la magnitud del aumento de temperatura ambiental en estas regiones y los posibles factores de riesgo para los peces nativos asociados a éste, para evaluar la contribución del cg. El riesgo para los peces nativos aumenta por la pérdida del hábitat y la introducción de especies exóticas en la región naA que presenta un incremento significativo de temperatura.

  6. Posibles factores de riesgo de los peces epicontinentales de México ante el calentamiento global

    OpenAIRE

    M. Y. De la Vega-Salazar

    2011-01-01

    México puede ser vulnerable al calentamiento global (cg) por encontrarse en la zona de transición de las regiones biogeográficas Neártica (naA) y Neotropical (nt). El estudio presenta la magnitud del aumento de temperatura ambiental en estas regiones y los posibles factores de riesgo para los peces nativos asociados a éste, para evaluar la contribución del cg. El riesgo para los peces nativos aumenta por la pérdida del hábitat y la introducción de especies exóticas en la región naA que presen...

  7. Tratamientos psicologicos en la hipertension arterial

    Directory of Open Access Journals (Sweden)

    Lilia Mabel Labiano

    2002-01-01

    Full Text Available En vista que las evidencias obtenidas acerca del beneticio percibido por los sujetos hipertensos leves con los tratamientos farmacológicos resultan conflictivas, se ha considerado importante para estos pacientes, la aplicación de intervenciones psicológicas y comportamentales. Se presentan en este trabajo, distintos tipos de tratamientos psicológicos que en los últimos años han demostrado su efectividad en la reducción de la presión arterial esencial. Se consideraron importantes para individuos hipertensos leves, la implementación de procedimientos tales como: la relajación, el entrenamiento autógeno, la retroalimentación biológica, la meditación, el Hatha -Yoga, la reestructuración cognitiva y el entrenamiento en habilidades sociales, porque contribuyeron a la reducción, no solo de los niveles hipertensivos sino también de los efectos adversos de la medicación farmacológica que afectan la calidad de vida. Es necesario evidentemente que el individuo generalice las estrategias aprendidas en el contexto clínico-experimental, a los diferentes contextos vitales. La técnica empleada, las características del terapeuta y el tipo de personalidad del paciente son componentes principales en la determinación del éxito del tratamiento. La práctica diaria sostenida fuera del contexto clínico, es un elemento de crucial importancia para el mantenimiento de la mejoría lograda.

  8. Characterization of Volatile Compounds in the Essential Oil of Sweet Lime (Citrus limetta Risso Caracterización de Compuestos Volátiles en Aceite esencial de Lima Dulce (Citrus limetta Risso

    Directory of Open Access Journals (Sweden)

    Maria C Colecio-Juárez

    2012-06-01

    Full Text Available The essential oil of citrus fruit contains components pleasant sensory characteristics that are appreciated in food, pharmaceutical, and cosmetics industries. In the case of sweet lime (Citrus limetta Risso, is necessary to characterize the essential oil components, to identify potential uses of this fruit. The essential oil of sweet lime was obtained from lime flavedo in four different maturation stages. Steam distillation was employed and then compared with hexane extraction. The identification of the components in the essential oil was carried out by gas chromatography and mass spectrometry. A total of 46 components were found in the essence of lime, among which the highest concentration of compounds present were aldehydes such as limonene. Linalool, sabinene, and bergamol were more abundant than in other varieties. The best extraction method was steam distillation, and the concentrations in stage III from the main terpenic portion were d-limonene with 74.4%, bergamol with 8.23%, and β-pinene with 7.62%.El aceite esencial de frutos cítricos contiene componentes de características sensoriales agradables que son apreciadas en las industrias alimentaria, farmacéutica y de cosméticos. En el caso de la lima dulce (Citrus limetta Risso, es necesaria la caracterización de los componentes de su aceite esencial para identificar usos potenciales de este fruto. El aceite esencial de lima dulce se obtuvo a partir del flavedo de lima en cuatro etapas de maduración diferentes. Se utilizó destilación por arrastre de vapor y se comparó con la extracción con hexano. La identificación de los componentes en el aceite esencial se realizó por cromatografía de gases y espectrometría de masas. Se encontró un total de 46 componentes en el aceite esencial de lima, entre los cuales la mayor concentración de compuestos presentes son aldehídos como el limoneno. Linalol, sabineno y bergamol fueron más abundantes que en otras variedades. El mejor m

  9. Occlusive Peripheral Arterial Disease

    Science.gov (United States)

    ... erythrocyte sedimentation rate (ESR) and level of C-reactive protein, which is produced only when inflammation is present. ... people with occlusive peripheral arterial disease also have coronary artery disease. Amputation of a limb may be necessary if ...

  10. Actividad antifúngica del aceite esencial de clavo de olor en el control del biodeterioro fúngico de documentos.

    Directory of Open Access Journals (Sweden)

    Oderlaise Valdés-Pérez

    2016-01-01

    Full Text Available Los documentos en soporte papel son susceptibles al biodeterioro causado por microorganismos. En países tropicales predomina la colonización fúngica, favorecida por los altos valores de humedad relativa y temperatura. Actualmente, los productos empleados en su control son sustancias químicas que causan daños a la salud humana, al soporte y al medio ambiente. Es por esto que los investigadores evalúan nuevos productos menos nocivos y ecológicos, entre los que destacan los de origen vegetal. El objetivo de este trabajo fue evaluar la actividad antifúngica del aceite esencial (AE de clavo de olor frente a tres cepas fúngicas predominantes en aislamientos del ambiente de depósitos y documentos dañados del Archivo Nacional de la República de Cuba; así como el efecto sobre el soporte. Para ello se empleó el método de los pocillos, se midieron los halos de inhibición total del crecimiento y de inhibición parcial de la esporulación. El efecto producido sobre el papel se evaluó antes y después de un envejecimiento acelerado mediante Microscopía Electrónica de Barrido, la determinación del pH, índice de cobre y la aparición de manchas. Se observó que el AE de clavo de olor presentó actividad fungicida hasta la concentración del 25 % (v/v, además de afectar la esporulación fúngica. A esta concentración, el producto no provocó daños de gran magnitud sobre el papel.

  11. Combination of Rare Right Arterial Variation with Anomalous Origins of the Vertebral Artery, Aberrant Subclavian Artery and Persistent Trigeminal Artery

    Science.gov (United States)

    Ishihara, H.; San Millán Ruíz, D.; Abdo, G.; Asakura, F.; Yilmaz, H.; Lovblad, K.O.; Rüfenacht, D.A.

    2011-01-01

    Summary A 32-year-old woman hospitalized for subarachnoid hemorrhage showed rare arterial variation on the right side with anomalous origins of the vertebral artery, aberrant subclavian artery and persistent trigeminal artery. Angiography showed the right vertebral artery to originate from the right common carotid artery, the right subclavian artery to arise separately from the descending aorta, and persistent trigeminal artery on the right side. The possible embryonic mechanism of this previously unreported variant combination is discussed. PMID:22005696

  12. On Renal Artery Stenosis

    OpenAIRE

    Eklöf, Hampus

    2005-01-01

    Renal artery stenosis (RAS) is a potentially curable cause of hypertension and azotemia. Besides intra-arterial renal angiography there are several non-invasive techniques utilized to diagnose patients with suspicion of renal artery stenosis. Removing the stenosis by revascularization to restore unobstructed blood flow to the kidney is known to improve and even cure hypertension/azotemia, but is associated with a significant complication rate. To visualize renal arteries with x-ray technique...

  13. Peripheral Artery Disease

    Science.gov (United States)

    ... or atherectomy may be used to help improve blood flow. What is peripheral artery disease (PAD)? How is peripheral artery disease evaluated? How ... PAD are diabetes, smoking, high cholesterol and high blood pressure. Most cases occur in ... is peripheral artery disease evaluated? Several imaging tests can be used to ...

  14. Retinal artery occlusion

    Science.gov (United States)

    ... artery occlusion; Branch retinal artery occlusion; CRAO; BRAO Images Retina References Sanborn GE, Magargal LE. Arterial obstructive disease ... A.M. Editorial team. Related MedlinePlus Health Topics ... audit to verify that A.D.A.M. follows rigorous standards of quality and accountability. A.D.A.M. is among ...

  15. Radiofrecuencia pulsada en la neuralgia esencial del trigémino: ¿Es una alternativa válida a la radiofrecuencia convencional? Pulsed radiofrequency in the management of trigeminal essential neuralgia: Is a valid alternative to the conventional radiofrequency?

    Directory of Open Access Journals (Sweden)

    M. Castro

    2008-04-01

    Full Text Available Objetivos. Demostrar la eficacia y seguridad de la radiofrecuencia pulsada en el tratamiento de la neuralgia esencial del trigémino y compararla con la técnica convencional. Material y métodos. Estudio observacional prospectivo en 32 pacientes diagnosticados de neuralgia esencial del trigémino a los que se les realizó un total de 44 radiofrecuencias del ganglio de Gasser. Las radiofrecuencias fueron realizadas en quirófano, bajo control radioscópico con un generador Neurotherm, agujas SMK 22G, estimulación sensitiva a 50 Hz hasta notar parestesia con 0,3-0,5 V y motora a 2 Hz sin que haya contracción del músculo masetero excepto si se está estimulando la 3ª rama. Se realizaron 28 radiofrecuencias pulsadas (RFP y 16 convencionales (RFC. La RFP se realizaba a una tª de 40º C durante 120 sg mientras que la RFC se realizaba a una tª de 80º C durante 60 sg. La eficacia del tratamiento se basó en control del dolor según la EVA a los 30, 90, y 180 días y mediante el test de Lattinen antes y al final del estudio. Todos los pacientes fueron preguntados acerca de posibles efectos secundarios. Resultados. Se realizaron un total de 44 procedimientos. El 60% de los pacientes fueron varones y el 40% mujeres. La edad media fue de 68.32 años. Ambos grupos fueron comparables en cuanto a patología previa y antecedentes personales. Entre las ramas afectas el 4.5% de los pacientes tenía afectada la primera rama, el 31.8% la segunda rama, el 36.4% la tercera rama, el 13.6% la primera y segunda rama, y el 13.6% la segunda y tercera rama. Los pacientes recibieron RFP en el 63,6% de los casos y RFC en el 36.4%. En el grupo de RFP la evolución del VAS fue: VAS 0: 8; VAS 1: 3 .4; VAS 3: 2.5 y VAS 6: 2. y del índice de Lattinen, L0: 16.9 y L6: 6. En el grupo de RFC, VAS 0: 7.9; VAS 1: 3.25; VAS 3: 2 y VAS 6: 2. El índice de Lattinen, L0: 16.125 y L6: 5. No hubo diferencias estadísticamente significativas en la reducción del VAS y del Lattinen

  16. Duplication of hepatic artery

    Directory of Open Access Journals (Sweden)

    Saeed Muhammad

    2001-01-01

    Full Text Available Background: The hepatic arterial anatomy is aberrant in almost 33-41% of individuals. The variant arterial anatomy recognized during routine cadaveric dissection offers great learning potential. Such findings provide an alternative perspective to view common morphology and its structural and functional importance. These impart the concept of patient individuality and subsequent individualization of medical and surgical therapies. Adequate knowledge of normal and abnormal arterial anatomy is essential for peripancreatic surgery and liver transplantation. Aims of the study: To report on hepatic artery variations observed in the dissecting room and to find out the macroscopic pattern of varied human hepatic arterial vascularization by cadaveric dissection. Patients and Methods: Twenty human cadavers of caucasian origin were dissected to study the source and topographic pattern of hepatic arterial supply. Results: Nineteen cadavers exhibited typical hepatic arterial supply from the celiac axis. Only one female body out of twenty cadavers exhibited a dual arterial supply to all parts of liver and gallbladder. One artery originated from the celiac axis whereas the other was given off by the superior mesenteric artery. Conclusion: No doubt, aberrant hepatic vascularization should be assessed preoperatively by invasive and noninvasive techniques to avoid fatal complications, but we favour careful dissection over angiography as a means of defining the arterial anatomy.

  17. Acute occlusion of the left subclavian artery with artery dissection

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

    @@ Subclavian steal syndrome is cerebral or brain stem ischemia resulting from diversion of blood flow from the basilar artery to the subclavian artery, which is caused by occlusive disease of either the subclavian artery or the innominate artery before they branch off at the vertebral artery. In the patients with subclavian steal syndrome the subclavian artery is fed by retrograde flow from the vertebral artery via the carotids and the circle of Willis.

  18. La renta básica de ciudadanía y su posible efecto llamada

    Directory of Open Access Journals (Sweden)

    Boso, Àlex

    2011-12-01

    Full Text Available In the last two decades, there has been a significant number of studies on the proposal of a basic income, but its relationship with the process of contemporary international migration has not been clearly and exhaustively analysed until now. In this article, the authors explore the viability of implementing a basic income of citizenship that could include immigrants with more than one year of residence within the target population. The main objective of this study is to contrast the arguments raised up by the hypothesis of a possible ‘pull effect’ of a basic income. The analysis focuses on the potential behaviour of agents who could be motivated to emigrate by the existence of a basic income in a destination country. The study brings in theoretical arguments and empirical data that question the magnitude and even the existence of a possible pull effect of a basic income, and points up that the proposal is neither a necessary nor a sufficient condition for an increase in migrant population.

    A pesar de la gran cantidad de estudios desarrollados en las últimas dos décadas sobre la propuesta de la renta básica, su relación con el proceso de migración internacional no ha sido abordado de forma clara y exhaustiva. En este artículo, se explora la viabilidad de la aplicación de una propuesta de renta básica de ciudadanía que incluya como población beneficiada a las personas inmigradas con más de un año de residencia. El principal objetivo del estudio es examinar la hipótesis del efecto llamada de una renta básica, contrastando los argumentos que la sostienen. El análisis se centra en el potencial comportamiento de los agentes que pretenden emigrar ante la introducción de una renta básica en un posible país de destino. El estudio aporta argumentos teóricos y datos empíricos que ponen en cuestión la magnitud e incluso la existencia de un posible efecto llamada de una renta básica, ya que apunta a que la propuesta no

  19. Luisa Etxenike: la palabra esencial

    Directory of Open Access Journals (Sweden)

    Rodríguez, María Pilar

    2006-10-01

    Full Text Available The journalistic work of Luisa Etxenike is studied, including her work as opinión columnist in the País Vasco editión of the daily newspaper El País from Octuber 2001 to date as well as her facet of fiction writer and organiser of the Encuentros de mujeres escritoras des 1988. An interview with Luisa Etxenike carried out by Cristina Ortiz Cebeiro completes the article.

    Se describe la labor periodística de Luisa Etxenike como columnista de opinión en la edición del País Vasco del diario El País desde octubre de 2001 hasta la actualidad, y su faceta de escritora de obras de ficción, y también como organizadora de los Encuentros de mujeres escritoras desde 1988. Completa el artículo una entrevista con Luisa Etxenike realizada por Cristina Ortiz Cebeiro.

  20. Efecto de fertilización nitrogenada en la producción de biomasa y calidad de aceite esencial en Lippia alba (Miller, Pronto alivio.

    Directory of Open Access Journals (Sweden)

    Sánchez O. M.

    2004-04-01

    Full Text Available En el Campo Experimental de la Universidad Nacional de Colombia sede Palmira (CEUNP se realizó un ensayo para evaluar el efecto de la fertilización nitrogenada, aplicando dos fuentes (gallinaza y urea en dos niveles (50 y 100 kg/ha de nitrógeno y dos frecuencias de corte (dos y cuatro meses. En el lote experimental se situaron 15 parcelas, en un diseño de bloques completos al azar, con cinco tratamientos y tres repeticiones. Para el análisis de la información se utilizó el programa estadístico SAS. El máximo rendimiento de biomasa y aceites esenciales se obtuvo con la aplicación de 100 kg/ha de nitrógeno en forma de urea y la frecuencia de corte cada dos meses. Los niveles de extracción de Lippia alba en nitrógeno variaron entre 79.7 y 128.5; fósforo entre 24.5 y 30.5; potasio entre 114.6 y 138.8 y calcio entre 100 y 150 kg/ha. El aceite esencial estuvo compuesto mayoritariamente por carvona y limoneno. Palabras claves: Fertilización nitrogenada, Lippia alba, Rendimientos biomasa, aceites esenciales, pronto alivio. ABSTRACT Nitrogenous fertilization effects in the Lippia alba production and quality. In the Experimental Center of the National University of Colombia-Palmira (CEUNP a experiment was realized to evaluate the effect of the nitrogenous fertilization, using two sources (gallinaza and urea at two levels (50 and 100 kg/ha of nitrogen and two cutting frequencies (each two and four months. In the experimental area 15 plots were planted, in a randomized Complete Blocks design random (RCBD with five treatments and three repetitions to measure the following variables: production of fresh matter, content of dry matter, nutrients extraction and content of essential oils. The analysis of variance used the statistical program SAS. The maximum yield of biomass and essential was obtained oils combining the fertilization with 100 kg/ha of nitrogen as urea and the cutting frequency every of two months. The levels of nutrients

  1. Inés Rosales: El reto de internacionalizar la actividad de una PYME es posible

    Directory of Open Access Journals (Sweden)

    Jesús Cambra-Fierro

    2010-01-01

    Full Text Available Las empresas deberían ser conscientes de que actualmente su mercado es el mundo. No obstante, en comparación con las grandes empresas, muchas pequeñas y medianas empresas (PYMES todavía no apuestan decididamente por impulsar su actividad internacional. Esto se debe no sólo a la dotación de recursos, sino también a ciertos temores o complejos por parte de los propietarios y/o gestores de estas empresas. El caso que se presenta ilustra la experiencia exitosa de internacionalización de una PYME. Además, destaca el hecho de haber superado una dificultad añadida: se trata de un producto de alimentación fuertemente vinculado a la cultura española (tortas de aceite. Este caso pretende servir como vehículo de reflexión para el contexto PYME demostrando que el reto, aunque complicado, es posible.

  2. Ciguatera: Posible transmisión sexual. A propósito de un caso.

    Directory of Open Access Journals (Sweden)

    RB Hevia Pumariega

    2008-01-01

    Full Text Available La ciguatera es una de las más importantes intoxicaciones causadas por el consumo de pescado, se produce cuando el hombre ingiere especies que viven asociadas a los arrecifes coralinos en mares de países tropicales y subtropicales. Es originada por dinoflagelados productores de toxinas , transmitidas por vía oral a través de la cadena alimentaria. Se describe el caso de un hombre de 52 años sin antecedentes de exposición a productos del mar, ni a sustancias tóxicas, que posterior a tener contacto sexual con su pareja femenina afectada por ciguatera desde hacía 48 horas presentó: astenia, parestesias periorales y artralgias que se prolongaron por más de 21 días; se le diagnosticó y trató por la misma enfermedad. Se sugiere una posible transmisión sexual de las toxinas relacionadas con este envenenamiento justificados por la alta liposolubilidad que les confieren sus estructuras química.

  3. Funcionamiento del ascensor social en España y posibles mejoras. Informe SESPAS 2014

    Directory of Open Access Journals (Sweden)

    Anna García-Altés

    2014-06-01

    Full Text Available En este artículo nos preocuparemos por el grado en que la situación socioeconómica de un individuo se hereda y cómo puede aumentarse la igualdad de oportunidades para mejorar la movilidad social. La pobreza y la deprivación pueden dejar de ser dinásticas si el ascensor social funciona. En España, la desigualdad de renta, medida por el coeficiente de Gini, ha pasado de 0,31 en 2006 a 0,35 en 2012 (nos alejamos de los países escandinavos y centroeuropeos para asemejarnos más en desigualdades de renta al Reino Unido o Estados Unidos, y el grado de movilidad intergeneracional se sitúa entre el de Italia y el de Estados Unidos. Para cambiar esta situación y hacer que el ascensor social funcione es necesario mejorar la educación primaria y orientar el sistema sanitario hacia la atención primaria, lo cual no será posible sin una mejor calidad de la política y de las instituciones que la están condicionando.

  4. Observaciones en el Ornithodoros Forcosus sobre su posible rol como vector de la Fiebre Recurrente

    Directory of Open Access Journals (Sweden)

    Arístides Herrer

    1957-12-01

    Full Text Available Tratando de verificar la posible infección por borrelias en el Ornithodoros Forcosus Neumann, 1908, se realizaron observaciones experimentales en las que se utilizó un total de 1,655 especímenes de esta garrapata. En tales estudios se emplearon pericotes blancos y cobayos. Con triturado de garrapatas fueron inoculados 68 animales (64 pericotes y 4 cobayos y 37 (16 pericotes y 21 cobayos fueron empleados para alimentar sobre ellos varios lotes de garrapatas. Los resultados de todas estas observaciones fueron negativas. Las garrapatas con las que se han efectuado estos estudios procedían de las localidades de Limabamba, Mariscal Benavides, Camporredondo, Ocalli y Luya, todas en el departamento de Amazonas, y a altitudes que varían entre 1,400 y 2,300 metros sobre el nivel del mar. Desde que la fiebre recurrente parece ser endémica en el Perú, especialmente en localidades de considerable altitud, es de suponer que en este país sea trasmitida principalmente por piojos.

  5. Argentina y la bipolaridad Estados Unidos-China: Implicancias de un escenario posible

    Directory of Open Access Journals (Sweden)

    Roberto Miranda

    2012-01-01

    Full Text Available En el presente siglo Argentina afrontó dos situaciones internacionales bien diferentes. Una fue la ventaja comercial obtenida gracias a la gravitación mundial de Asia y, sobre todo, al vínculo especial con China. Este país representó un punto de apoyo coyuntural. Otra situación fue la marginación de Argentina del poder inversor transnacional por la interposición norteamericana. El escenario posible de una bipolaridad entre Estados Unidos y China no sería una buena noticia para el país sudamericano. Por un lado Argentina no sólo pretende la persistencia del vínculo con China, también quiere una agenda más amplia y densa con esta potencia, la cual parece poco probable. Por otra parte le ha resultado complicado reducir la dependencia estructural con Estados Unidos, la cual el hegemón, por razones de diseño estratégico, se la hizo sentir en temas como el de las inversiones. Justamente, por un motivo y otro, la bipolaridad podría ser una limitante de la permisividad internacional de Argentina, después de haber disfrutado de ella.

  6. Composición del aceite esencial de Tagetes lacera, planta endémica de Baja California Sur, México Composition of essential oil of Tagetes lacera, endemic plant from Baja California Sur, Mexico

    OpenAIRE

    Francisco Díaz-Cedillo; Miguel A. Serrato-Cruz; Mario Arce-Montoya; José L León-de la Luz

    2012-01-01

    Es escasa la información sobre la biología y química de Tagetes lacera Brand. (Asteraceae), especie endémica de Baja California Sur (BCS), México, que por su porte alto y presencia de aroma es una fuente de aceites esenciales útil para el control de plagas y enfermedades de cultivos agrícolas. A partir de partes aéreas de plantas en floración de T. lacera recolectadas en la sierra de la Laguna, BCS se obtuvo aceite esencial mediante hidrodestilación. Por medio del procedimiento de análisis CG...

  7. Estudio del efecto del aceite esencial de orégano de monte (Lippia origanoides) del Alto Patía sobre la metanogénesis y la actividad fibrolítica del ecosistema ruminal

    OpenAIRE

    Rodríguez Quiroz, Tatiana Alejandra

    2014-01-01

    Este estudio evaluó por primera vez el aceite esencial de orégano (AEO) nativo colombiano Lippia origanoides Kunth (componente principal timol 70%) como modulador de la estructura de la comunidad de los metanógenos ruminales, la actividad fibrolítica y consecuentemente sobre la metanogenesis ruminal. En primera instancia se evaluó el efecto de la dosis del AEO sobre la producción de metano y DIVMS en fermentaciones in vitro utilizando como sustrato Penisetum cladestinum con cin...

  8. Rendimiento de biomasa y aceite esencial de quimiotipos de Lippia alba (Mill.) N. E. Brown en respuesta a las prácticas agronómicas, y sus propiedades farmacológicas

    OpenAIRE

    Blanco, Marcos

    2014-01-01

    Esta tesis estudia experimentalmente la respuesta de plantas cultivadas pertenecientes a cuatro quimiotipos de Lippia alba (carvona, dihidrocarvona, citral y linalol) ante la implementación de distintas técnicas de manejo agronómico. Se analizó la incidencia de la distancia de plantación y época de corte de la planta sobre el rendimiento de biomasa, de droga cruda (hoja seca) y aceite esencial en los diferentes quimiotipos evaluados. El rendimiento de droga cruda no fue afectado por las difer...

  9. Evaluación del proceso integral para la obtención de aceite esencial y pectina a partir de la cáscara de naranja Integral evaluation process for obtaining pectin and essential oil

    OpenAIRE

    Ivonne Cerón-Salazar; Carlos Cardona-Alzate

    2011-01-01

    En este trabajo se presentó la extraccion de aceite esencial y pectina a partir dela cascara de naranja (Citrus sinensis) como un proceso integral. Se realizó elproceso de extracción utilizando un simulador comercial adaptandose al procesoreal. Se realizaron pruebas experimentales con un kilogramo de cáscara de naranja procesado a las mismas condiciones de la simulacion con el fin de comparar los rendimientos obtenidos, logrando una concordancia aceptable. Posteriormente se escaló el proceso ...

  10. Celiac Artery Compression Syndrome

    Directory of Open Access Journals (Sweden)

    Mohammed Muqeetadnan

    2013-01-01

    Full Text Available Celiac artery compression syndrome is a rare disorder characterized by episodic abdominal pain and weight loss. It is the result of external compression of celiac artery by the median arcuate ligament. We present a case of celiac artery compression syndrome in a 57-year-old male with severe postprandial abdominal pain and 30-pound weight loss. The patient eventually responded well to surgical division of the median arcuate ligament by laparoscopy.

  11. Popliteal artery entrapment syndrome.

    LENUS (Irish Health Repository)

    O'Leary, D P

    2010-01-01

    Popliteal artery entrapment syndrome is a rare abnormality of the anatomical relationship between the popliteal artery and adjacent muscles or fibrous bands in the popliteal fossa. The following is a case report of a 19 year old female, in whom popliteal artery entrapment syndrome was diagnosed, and successfully treated surgically. A review of literature is also presented and provides details on how PAES is classified, diagnosed both clinically and radiologically, and treated surgically.

  12. Coeliac artery compression syndrome

    OpenAIRE

    OKTAY, Özgür; MEMİŞ, Ahmet; Parildar, Mustafa; Oran, İsmail

    2003-01-01

    Celiac artery compression syndrome, also called median arcuate ligament compression syndrome, causes gastrointestinal ischemia secondary to compression of the proximal portion of the celiac artery just beyond its origin by the median arcuate ligament of the diaphragm. This syndrome is frequently demonstrated on aortography performed in patients without complaints of intestinal angina. Isolated stenosis or even occlusion of the celiac artery is always compensated for by collateral circul...

  13. Imaging the vertebral artery

    Energy Technology Data Exchange (ETDEWEB)

    Tay, Keng Yeow; U-King-Im, Jean Marie; Trivedi, Rikin A.; Higgins, Nicholas J.; Cross, Justin J.; Antoun, Nagui M. [Addenbrooke' s Hospital and University of Cambridge, Department of Radiology, Cambridge (United Kingdom); Davies, John R.; Weissberg, Peter L. [Addenbrooke' s Hospital and University of Cambridge, Division of Cardiovascular Medicine, Cambridge (United Kingdom); Gillard, Jonathan H. [Addenbrooke' s Hospital and University of Cambridge, Department of Radiology, Cambridge (United Kingdom); Addenbrooke' s Hospitald, University Department of Radiology, Cambridge (United Kingdom)

    2005-07-01

    Although conventional intraarterial digital subtraction angiography remains the gold standard method for imaging the vertebral artery, noninvasive modalities such as ultrasound, multislice computed tomographic angiography and magnetic resonance angiography are constantly improving and are playing an increasingly important role in diagnosing vertebral artery pathology in clinical practice. This paper reviews the current state of vertebral artery imaging from an evidence-based perspective. Normal anatomy, normal variants and a number of pathological entities such as vertebral atherosclerosis, arterial dissection, arteriovenous fistula, subclavian steal syndrome and vertebrobasilar dolichoectasia are discussed. (orig.)

  14. Peripheral artery disease - legs

    Science.gov (United States)

    ... if they have a history of: Abnormal cholesterol Diabetes Heart disease (coronary artery disease) High blood pressure ( hypertension ) Kidney disease involving hemodialysis Smoking Stroke ( cerebrovascular disease )

  15. DESHIDRATACION Y SOBREHIDRATACION VOLUNTARIAS DURANTE EL EJERCICIO EN EL CALOR: POSIBLES FACTORES RELACIONADOS

    Directory of Open Access Journals (Sweden)

    Andrea Solera Herrera

    2006-12-01

    Full Text Available Los efectos negativos de la deshidratación sobre la salud y el rendimiento han sido bien documentados. Recientemente, también se han documentado problemas por sobrehidratación. La presente investigación se hizo para estudiar los posibles factores que influyen sobre la ingesta voluntaria de líquido durante el ejercicio y determinar si existe relación entre el grado de deshidratación voluntaria y la creencia de que la ingesta de líquido provoca cólico. Para ello, se contó con 94 estudiantes universitarios jóvenes, varones, quienes se ejercitaron a un 60% de su FCmáx durante una hora, alternando cada 10 min. entre bicicleta estacionaria, subir y bajar un escalón, y una máquina simuladora de esquí. Esto se realizó en un laboratorio de ambiente controlado a 30úC, 70% humedad relativa. Durante el ejercicio se midió la ingesta voluntaria de una bebida deportiva, así como también las percepciones de calor ambiental, llenura estomacal, malestar gastrointestinal y palatabilidad de la bebida. Los sujetos fueron pesados desnudos y secos antes y después del ejercicio. Al final se les aplicó un cuestionario sobre la importancia de la hidratación, y sus creencias sobre el cólico. El equilibrio hídrico promedio fue de 0.14 ± 0.98% del peso corporal, con un rango entre -2.38% y 2.84%. La tasa de sudoración promedio fue de 1208.3 ± 381.7ml·h-1; y la ingesta de 1132 ± 610ml·h-1. Dos análisis de regresión múltiple determinaron que: (a los predictores más fuertes de la ingesta voluntaria de líquido fueron la importancia asignada a la hidratación durante el ejercicio (R2 = 0.13; p < 0.0005 y la percepción de llenura estomacal al minuto 25 (R2 = 0.08; p = 0.005; (b los predictores más fuertes del equilibrio hídrico fueron la ingesta voluntaria por kg de peso (R2 = 0.73; p < 0.0005, y la tasa de sudoración (R2 = 0.08; p = 0.006. No obstante, el equilibrio hídrico no estuvo asociado con ninguna de las percepciones, ni con las

  16. ¿ES POSIBLE GESTIONAR CALIDAD EN EL LABORATORIO DE URGENCIAS?

    Directory of Open Access Journals (Sweden)

    María del Carmen Moirón

    2010-01-01

    Full Text Available Introducción. La calidad de una gestión planificada debe residir tanto en el resultado del servicio brindado como en su proceso de prestación. La misión del laboratorio de urgencia es proporcionar el informe de los resultados a la mayor brevedad posible (menor TAT -turn around time-, con la máxima eficiencia, calidad, responsabilidad, ética y profesionalidad, proporcionando al médico un apoyo importante en el diagnóstico y tratamiento. El error en las fases pre y posanalíticas es superior a la analítica. Los tiempos consumidos en estas etapas son los que ocasionan mayores aumentos en el tiempo de respuesta. Los ciclos de mejora deben orientarse a acciones que aumenten el control sobre las mismas. Objetivos. Evaluar errores preanalíticos (administrativos -EA- y técnicos -ET- y posanalíticos (EPoA que impactan en la calidad de la atención. Implementar las acciones correctivas convenientes y evaluar la mejora implementada. Materiales y métodos. Se midieron indicadores para evaluar los EA, ET y EPoA durante cuatro semanas. Al mes de implementada la acción correctiva se monitoreó la mejora durante igual tiempo. Resultados. Se obtuvo una clara disminución en los errores pre y posanalíticos luego de implementadas las acciones de mejora, un significativo acortamiento en los tiempos de respuesta y un aumento de la percepción de la calidad en los clientes internos. Conclusiones. El monitoreo de las etapas pre y posanalíticas reveló una disminución del error luego de implementada la mejora. Es importante continuar con las actividades de capacitación para que las mejoras alcanzadas sean sustentables en el tiempo.

  17. ¿ES POSIBLE UN VERDADERO ESTADO DE DERECHO DEMOCRÁTICO?. JÜRGEN HABERMAS Y LAS APÜRÍAS DE LA SOCIEDAD LIBERAL

    Directory of Open Access Journals (Sweden)

    Luis null

    2008-01-01

    Full Text Available La concepción e interpretación de la sociedad civil que, desde su teoría de la acción comunicativa (1981 hasta sus últimos escritos políticos, ha ido construyendo el filósofo alemán Jürgen Habermas refleja un proceso de ajuste a la realidad empírica con el consiguiente aflojamiento de los elementos normativos de su teoría. En este sentido, el lenguaje jurídico pasa a primer plano en detrimento del lenguaje filosófico-moral, lo que permite articular democracia y capitalismo en el marco de un Derecho que, recogiendo la esencial determinación de individuo, se encarga de armonizar distintos intereses contrapuestos y de manejar las contingencias de un modelo social que, en lo esencial, sigue dando preocupantes muestras de incoherencia y debilidad.

  18. Efectos secundarios de la aplicación tópica de un aceite de esencial: dermatitis alérgica de contacto a aceite de árbol de té

    Directory of Open Access Journals (Sweden)

    R. Santesteban Muruzábal

    2015-04-01

    Full Text Available Fundamento. El aceite de árbol de té es un aceite esencial, cuyo uso está aumentando en nuestro medio, tanto por sus supuestos efectos medicinales, como por sus propiedades aromáticas. Se describe nuestra experiencia en dermatitis alérgica de contacto tras la aplicación de este aceite. Material y Métodos. Cinco pacientes en los últimos 5 años (0,4% de todos los pacientes estudiados en consulta especializada reaccionaron a una concentración de 5% de aceite de árbol de té en vaselina. Resultados. Todos los pacientes presentaron reacciones fuertes, y en todos los casos éstas fueron consideradas relevantes. Tres de ellos reaccionaron también a d-limoneno oxidado, uno de los componentes del aceite de árbol de té, que está presente en nuestra serie estándar. Conclusiones. Se han descrito diversos casos en la literatura de dermatitis alérgica de contacto al aceite de árbol de té, pero hasta hace poco ha sido infrecuente en nuestro medio. Con el aumento de popularidad de terapias alternativas y naturales hemos sido testigos de varios casos de sensibilización a este aceite esencial, que había sido utilizado para tratar varias enfermedades de la piel supuestamente "infecciosas", pero que eran muy probablemente diferentes formas de dermatitis.

  19. Distribución y movimiento del colesterol en la membrana de eritrocito de pacientes con hipertensión esencial

    Directory of Open Access Journals (Sweden)

    Muriana, F. J. G.

    1996-08-01

    pacientes hipertensos normocolesterolémicos y 12 pacientes hipertensos hipercolesterolémicos. Mediante punción en la vena antecubital, se recogieron muestras de sangre en citrato sódico al 0,38%. La distribución del colesterol y su velocidad de transporte en la membrana de eritrocito se midieron según la técnica de la coiesterol oxidasa. La medida de la velocidad máxima del contratransporte Na+-Li + en eritrocito se efectuó según el eflujo de Li+ en presencia o ausencia de Na+. El estudio estadístico se determinó según el análisis de varianza (ANOVA para datos pareados con distribución normal. Para las correlaciones se empleó el test de regresión lineal de Pearson. Los resultados indican que existe una distribución asimétrica del colesterol en la membrana de eritrocito humano (más colesterol en la monocapa interna que en la externa, aunque la monocapa interna del eritrocito de pacientes hipertensos es aún más rica en colesterol que la de sujetos sanos. Esta alteración es concomitante con una reducción de la velocidad de transporte del colesterol en la bicapa lipídica del eritrocito, que contribuye a la asimetría transmembrana y lateral del propio coiesterol. Estos parámetros se correlacionan con la actividad en el eritrocito del contratransporte Na+-Li+, considerado como un indicador genético de la hipertensión esencial. Puede afirmarse que la distribución del colesterol y su velocidad de transporte entre monocapas pueden desempeñar un papel específico en el proceso hipertensivo. Y, por extensión, en otras enfermedades asociadas con alteraciones en el metabolismo lipídico.

  20. Bilateral popliteal arterial dissection.

    Science.gov (United States)

    Chen, Po-Liang; Ko, Shih-Yu; Tan, Ken-Hing

    2012-01-01

    A clinical feature of bilateral popliteal arterial dissection without involving the descending aorta, bilateral iliac, as well as femoral arteries has never been reported in the past literature. We report a 56-year-old man with hypertension and coronary artery disease who presented to our emergency department with complaints of bilateral knee pain after long-distance walking. Physical examination was notable for elevated blood pressure, but there was no palpable pulsation over dorsalis pedis arteries on his feet. Laboratory evaluation revealed a d-dimer level of 35.2 mg/L (FEU) on the day of the test and 1.2 mg/L one and a half months ago (normal level, <0.55). These findings were suggestive of a recent-onset peripheral arterial occlusive disorder. Computed tomography of the aorta showed bilateral popliteal arterial dissection with arterial intimal flap. Abdominal aorta, bilateral iliac, and femoral arteries remained intact with only arteriosclerotic change. Minimally invasive endovascular stent grafting was then performed. The patient had an uneventful recovery. PMID:21106320

  1. Efecto del aceite esencial de Aloysia triphylla britton (cedrón sobre el Trypanosoma cruzi en ratones The effect of the essential oil from Aloysia triphylla britton (lemon verbena on Trypanosoma cruzi in mice

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    Juan Rojas

    2012-03-01

    Full Text Available Objetivos. Determinar la actividad anti-Trypanosoma cruzi in vivo del aceite esencial de Aloysia triphylla en ratones. Materiales y Métodos. Los animales fueron asignados aleatoriamente a los siguientes grupos (n = 15 por grupo: infectados y no tratados (G1, infectados y tratados con benznidazol 100 mg/kg (G2, infectados y tratados con aceite esencial de Aloysia triphylla 100 mg/kg (G3, infectados y tratados con aceite esencial de Aloysia triphylla 250 mg/kg (G4; no infectados y no tratados (G5, y no infectados y tratados con 250 mg/kg de Aloysia triphyla (G6. La infección con T. cruzi se realizó con 104 tripomastigotes sanguíneos y el tratamiento empezó en el octavo día postinfección (dpi hasta el 28 dpi. La parasitemia se determinó con microscopía óptica cada dos días en 5 μL de sangre extraída de la cola. En el 14, 21 y 28 dpi se obtuvo sangre de la cola para el ensayo de creatina kinasa-MB (CK-MB, alanina aminotransferasa y creatinina; después, los animales fueron sacrificados y se extrajo el corazón para el estudio histopatológico. Resultados. El aceite esencial de cedrón produjo una reducción significativa de 85,4% del pico de parasitemia con la dosis de 250 mg/kg; también produjo reducción del número de amastigotes e infiltrados inflamatorios en el corazón. El nivel plasmático de CK-MB también disminuyó en el 28 dpi por efecto de dicho tratamiento. Conclusiones. En condiciones experimentales, el aceite esencial de Aloysia triphylla tiene efecto anti-Trypanosoma cruzi in vivo en ratones.Objectives. To determine the in-vivo anti-Trypanosoma cruzi activity of the essential oil from Aloysia triphylla in mice. Materials and methods. The mice (n = 15 in the study were randomly assigned to the following groups: infected and untreated (G1, infected and treated with benznidazole 100 mg/kg (G2, infected and treated with of Aloysia triphylla essential oil 100 mg/kg (G3, infected and treated with of Aloysia triphylla

  2. Chemical constituents and toxicity of Agastache foeniculum (Pursh kuntze essential oil against two stored-product insect pests Componentes químicos y toxicidad del aceite esencial de Agastachefoeniculum (Pursh Kuntze contra dos plagas de insectos de productos almacenados

    Directory of Open Access Journals (Sweden)

    Asgar Ebadollahi

    2011-06-01

    Full Text Available The uncontrolled use of synthetic insecticides is a great hazard for the environment and consumers. Essential oils were introduced as low toxic agents against mammals and non-targeted insects. In this study, essential oil from aerial parts of blue giant hyssop (Agastache foeniculum [Pursh] Kuntze (Lamiaceae was isolated by the water steam distillation method with a Clevenger apparatus, and its chemical composition was studied by gas chromatography mass spectrometry. The toxicity of A. foeniculum essential oil against red flour beetle, Tribolium castaneum (Herbst, and lesser grain borer Rhyzopertha dominica (F. was evaluated by fumigation at 24, 48, and 72 h exposure times. Estragole and 1,8-cineole were identified as major constituents of the A. foeniculum oil. Fumigation bioassays revealed that A.foeniculum oil had strong insecticidal activity on experimental insects. Rhyzopertha dominica was more susceptible than T. castaneum for all exposure times. Insecticidal activity varied with essential oil concentration and exposure time. Probit analysis showed that increased exposure time and essential oil concentration increased mortality. These results indicated that A. foeniculum essential oil can be applied in the management of stored-product insects to decrease the detrimental effects of synthetic insecticides.El uso incontrolado de los insecticidas sintéticos causa gran peligro para el medio ambiente y los consumidores. Los aceites esenciales se presentan como agentes tóxicos leves contra mamíferos e insectos no objetivo. En el presente estudio, el aceite esencial de las partes aéreas del hisopo gigante azul (Agastache Foeniculum [Pursh] Kuntze (Lamiaceae se aisló por el método de destilación al vapor de agua, utilizando un aparato de Clevenger y se estudió su composición química mediante cromatografía de gases y espectrometría de masas. La toxicidad del aceite esencial de A. foeniculum se evaluó por métodos de fumigación a las 24

  3. Utilización de Aceite Esencial de Lemongrass (Cymbopogon citratus Stapf) Como Repelente de Diuraphis noxia Kurdj. (Hemiptera: Aphididae) en Trigo Use of Lemongrass (Cymbopogon citratus Stapf) Essential Oil As a Repellent of Diuraphis noxia Kurdj. (Hemiptera: Aphididae) in Wheat

    OpenAIRE

    Mónica Ricci; Susana Padín; Jorge Ringuelet; Andrea Kahan

    2006-01-01

    Una herramienta alternativa para el manejo integrado de plagas, es la utilización de productos naturales, como aceites esenciales y extractos vegetales. El objetivo del trabajo fue evaluar la actividad repelente del aceite esencial de lemongrass (Cymbopogon citratus Stapf) sobre el pulgón ruso (Diuraphis noxia Kurdj.) en trigo (Triticum aestivum L.). El aceite esencial se formuló en solución acuosa empleando como emulsionantes propilenglicol al 5% y lecitina de soja al 0,5%. Las concentracion...

  4. Estudio comparativo de la presión arterial invasiva frente a la presión arterial no invasiva. Valoración de la diferencia

    OpenAIRE

    Simarro Blasco, J.A.; Noheda Blasco, M.C.; Bascuñana Blasco, M.; Noheda Recuenco, M.; Tolmo Aranda, I.; Romero Carralero, M.I.

    2011-01-01

    En la práctica clínica, la tensión arterial es un parámetro importante en la valoración hemodinámica del paciente crítico. Existen dos formas de medición: Presión Invasiva (PI) y Presión No Invasiva (PNI). Como objetivos nos planteamos comparar la diferencia entre ambas formas de medición, valorar las posibles diferencias por la localización arterial, edad y sexo, valorar la influencia de la ventilación mecánica, drogas inotrópicas y antecedentes personales en la diferencia de Presión arteria...

  5. Coronary Artery Bypass

    Directory of Open Access Journals (Sweden)

    Kadri Ceberut

    2011-01-01

    Full Text Available Ancient schwannoma is a rare variant of neural tumors though rarely seen in the thorax. The combination with coronary artery diseases is also rare. Here we describe a 66 year-old male who had undergone one-stage combined surgery for thoracic ancient schwannomas removal and coronary artery disease. The masses were, respectively, 13 cm in the middle mediastinum and 5 cm in diameter originating from the intercostal nerve. The tumors were successfully removed using sternotomy, and then a coronary artery bypass grafting was performed. Here we discuss this rare tumor in relation to the relevant literature.

  6. Peripheral Arterial Disease

    Science.gov (United States)

    Peripheral arterial disease (PAD) happens when there is a narrowing of the blood vessels outside of your heart. The cause of ... smoking. Other risk factors include older age and diseases like diabetes, high blood cholesterol, high blood pressure, ...

  7. Coronary artery spasm

    Science.gov (United States)

    ... blocker or a long-acting nitrate long-term. Beta-blockers are another type of medicine that is used with other coronary artery problems. However, beta-blockers may make this problem worse. They should be ...

  8. Pulmonary Arterial Hypertension

    Science.gov (United States)

    Pulmonary Arterial Hypertension What Is Pulmonary Hypertension? To understand pulmonary hypertension (PH) it helps to understand how blood ows throughout your body. While the heart is one organ, it ...

  9. Carotid artery disease

    Science.gov (United States)

    ... you have had a stroke or TIA, a nervous system (neurological) exam will show other problems. You may also have the following tests: Blood cholesterol and triglycerides test Blood sugar (glucose) test Ultrasound of the carotid arteries ( carotid ...

  10. POSIBLES PAUTAS PARA UNA ACCIÓN VITAL SOBRE EL DETERIORO

    Directory of Open Access Journals (Sweden)

    Juan José Tuset Davó

    2011-05-01

    Full Text Available RESUMEN La creciente acumulación de residuos nos plantea posibles pautas para intervenir el nuevo entorno cambiante. Este pensar implica buscar y definir modelos que permitan enfrentarnos a las arquitecturas sin uso. Previo a su demolición o rehabilitación, podemos establecer como actitud ética la preservación y exaltación de la vida natural de toda construcción del hombre. Para ello, nos instruimos de los modelos válidos acometidos en proyectos de paisaje y, especialmente, de jardín porque, en su voluntad de crear entornos placenteros, la vida en toda su amplitud se hace presente para poderla aprehender. El tránsito desde la persistencia de lo mismo, que establece posturas que idealizan el paisaje, hasta la nueva valoración del cambio alternativo, implica ahondar en la complejidad de las variables de lo natural. Dirigir la mirada a lo biológico verifica que, en su alternancia permanente, nace una nueva estética ligada a los principios ecológicos que ponen en valor el devenir del tiempo. Toda unidad arquitectónica que nace de la unión de lo preexistente -soporte- con lo nuevo -aporte- nos ofrece la oportunidad de razonar el sentido de lo Otro. Apoyados en el pensamiento de Lévinas, nos acercamos a una actitud ética que, complementada con los variados planteamientos estéticos característicos del hecho arquitectónico, nos conduce a abrirnos al gozo estético de lo Otro. La atención a lo natural en toda arquitectura nos aporta la experiencia de conseguir una existencia consecuente con la vida.SUMMARY The growing accumulation of waste presents us with possible guidelines to intervene in the new changing environment. This thinking involves searching for, and defining, models that allow us to confront architecture without use. Prior to demolition or renovation, we can establish the preservation and exaltation of the natural life of any of mankind’s structures as an ethical attitude. To this end, we learn about the valid models

  11. El razonamiento analógico verbal: una habilidad cognitiva esencial de la producción escrita (Verbal analogical reasoning: an essential cognitive ability of written production

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    Ricardo Benítez Figari

    2010-12-01

    Full Text Available La escritura promueve en los sujetos la capacidad de razonar en y con el lenguaje: el metalenguaje (Ravid y Tolchinsky, 2002. Esta habilidad requiere de conocimientos lingüísticos y de habilidades cognitivas para un desarrollo acorde. Uno de los componentes centrales de la cognición es la capacidad de razonar en forma analógica (Goswami y Brown, 1990. El presente trabajo tiene como propósito indagar una posible relación entre ambas variables: producción textual y razonamiento analógico verbal. Para ello, se plantean dos objetivos: (a indagar acerca del razonamiento analógico verbal como una habilidad cognitiva a la base de la escritura de textos narrativos, y (b determinar la incidencia de esta habilidad en el metalenguaje. Así, se estudió un grupo de 258 escolares chilenos de tercer año de educación básica para establecer una correlación entre su nivel de razonamiento analógico y su nivel de producción de textos narrativos. Se aplicó una prueba de escritura y una prueba de razonamiento analógico verbal. Los resultados preliminares señalan que existe correlación entre ambas variables; sin embargo, se puede observar que algunos dominios específicos de la escritura parecen depender más de otros conocimientos que sólo del razonamiento analógico verbal. (Writing enables individuals to reason in or with language: metalanguage (Ravid y Tolchinsky, 2002. This ability requires both linguistic knowledge and cognitive abilities, so it can develop accordingly. One of the pivotal components of cognition is the capacity to reason in an analogical way (Goswami y Brown, 1990. The purpose of this paper is research into the potential relation between both variables: text production and analogical reasoning. To that purpose, two objectives have been pursued: (a to inquire into the verbal analogical reasoning as a cognitive ability essential to the writing of narrative texts; and (b to determine the incidence of this ability in the

  12. La teoría de los mundos posibles y su pertinencia para el estudio de la literatura castellana medieval

    OpenAIRE

    Zubillaga, Carina

    2009-01-01

    Frente a la narratología estructuralista, una subdisciplina relativamente unificada, la nueva narratología se constituye como un proyecto interdisciplinario integrado por posturas heterogéneas que focalizan en procesos abiertos y dinámicos en lugar de productos estáticos. Entre estos nuevos acercamientos narratológicos, la teoría de los mundos posibles presenta, como característica específica frente a otras corrientes relacionadas con alguna forma de orientación contextualista, un alto grado ...

  13. La comprensión infantil de la muerte : Una mirada desde lo real, lo posible y lo necesario

    OpenAIRE

    Lenzi, Alicia; Tau, Ramiro

    2012-01-01

    El artículo refiere a una investigación doctoral en curso sobre el desarrollo de la comprensión infantil de la muerte, y se centra en los conceptos de lo real, lo posible y lo necesario de las últimas investigaciones piagetianas. Aunque se trata de una discusión teórica, se mencionan algunos estudios precedentes acerca de la comprensión de la muerte, puntuando algunos de sus problemas metodológicos vinculados con la distinción entre creencias infantiles sugeridas y espontáneas. Se presentan a...

  14. Adquisición del lenguaje oral de 0-3 años y posibles trastornos.

    OpenAIRE

    Herrero de los Bueis, Bárbara Nuria

    2015-01-01

    En este trabajo he tratado de explicar el proceso de adquisición del lenguaje, que es de vital relevancia en el primer ciclo de Educación Infantil. Esta etapa aborda desde el nacimiento hasta los 3 años. Por ello, pienso que es necesario hacer un estudio de las diferentes teorías del lenguaje, así como las diversas etapas y sub-etapas que atraviesa el infante en el desarrollo de la adquisición del lenguaje. En este proyecto también he estudiado los posibles trastornos que podemos encontrar...

  15. Aspectos microestructurales y posibles usos del maíz de acuerdo con su origen geográfico

    OpenAIRE

    Ernesto David Narváez González; Juan de Dios Figueroa Cárdenas; Suketoshi Taba

    2007-01-01

    La mayoría de los estudios microestructurales del maíz se han orientado a la industria de los almidones y pocos se han relacionado con alimentos o calidad de tortilla. Se estudió la relación entre la microestructura del grano y las propiedades funcionales de razas de maíz de América Latina, y su posible uso de acuerdo con la zona geográfica. Se analizaron aspectos microestructurales, como grado de compactación de los cuerpos celulares del endospermo, tamaño y morfología del ...

  16. Curso sobre bibliotecas en centros penitenciarios: una vía posible para la reinserción social

    OpenAIRE

    González Benito, Teresa

    2002-01-01

    Contenidos del curso: 1.- Recorrido histórico desde mediados del siglo XIX y estado actual. 2.- Las Bibliotecas de prisiones en la España de hoy. 3.- Un alegato en favor de la lectura en la cárcel hace cincuenta años. 4.- Dificultades reales en las bibliotecas de los centros penitenciarios. 5.- Las bibliotecas en los centros penitenciarios como vía posible para la reinserción social. 6.- Del analfabetismo al placer de leer.

  17. Relatos de una experiencia : La extensión como posible significante articulador entre derechos e infancias

    OpenAIRE

    Fischquin, Roxana

    2014-01-01

    Pensar la extensión como su palabra lo nombra es pensar la Universidad en el espacio comunitario. En ese extender hay una multiplicidad de interpretaciones posibles que a modo de puente o a modo de encuentro se van enlazando. Pensarla como articulador entre infancias y derechos hace foco en el lugar del estado en su vertiente muchas veces restitutiva. Esto permite visualizar las inscripciones que se van sucediendo en esta compleja trama de lo que denominamos extensión. Aquí voy a situar...

  18. Los viejos antecedenes andalusíes de la intertextualidad y su posible influencia en el occidente cristiano

    OpenAIRE

    Perromat Agustín, Kevin

    2010-01-01

    La literatura arábiga medieval posee la singularidad de haber elaborado una teoría considerable sobre la intertextualidad y los límites de la apropiación e imitación poéticas. En este contexto, los tratadistas árabes consideraron simultánea y paradojicamente el plagio (sariqa) como infracción de las normas literarias y como uno más de los recursos literarios legítimos del poeta. Por el momento se desconoce su posible ascendiente en las poéticas medievales del Occidente cristiano, aunque, a la...

  19. Cambio climático en Uruguay, posibles impactos y medidas de adaptación en el sector agropecuario.

    OpenAIRE

    Gimenez, Agustin; Castano, Jose Pedro; Baethgen, Walter E.; Lanfranco, Bruno A.

    2009-01-01

    El presente trabajo presenta un resumen de información sobre cambio climático observado en Uruguay y la región y posibles escenarios futuros. Dicha información se basa fundamentalmente en estudios conducidos y finalizados recientemente (2005-2009) en el país, en el marco del programa “Assessment of Impacts and Adaptation to Climate Change” (AIACC-START, TWAS, GEF) ( AIACC, 2006), en el “Análisis de la Estadística Climática y Desarrollo y Evaluación de Escenarios Climáticos e Hidrológicos de l...

  20. Acceso abierto: ¿Es posible publicar "bueno, bonito y barato" en psicología y neurociencia?

    OpenAIRE

    Ángel Correa Torres

    2014-01-01

    Ante la insatisfacción de un número creciente de investigadores con el modelo de publicación clásico por el que algunas editoriales se lucran masivamente cobrando por el acceso al conocimiento científico, cabe preguntarse si es posible publicar en revistas de calidad que ofrezcan acceso libre a un precio razonable. En este artículo se ofrecen algunas respuestas aplicadas al contexto de la investigación en psicología y neurociencia. Aunque el momento actual no es el ideal, hay razones para ser...

  1. Resumen de tesis. La B(1,3)glucán sintasa Bgs1 es esencial en el control de la polaridad celular y la citocinesis de Schizosaccharomyces pombe

    OpenAIRE

    Ramos Vecino, Mariona

    2014-01-01

    [ES]El complejo enzimático de la beta(1,3)glucán sintasa de la levadura de fisión Schizosaccharomyces pombe está compuesta por una subunidad catalítica codificada por los genes de la familia Bgs. Bgs1 es esencial y es responsable de la síntesis del beta(1,3)glucano lineal que da lugar a la estructura del septo primario de división. En ausencia de Bgs1 las células presentan defectos en separación celular y en la selección del sitio de crecimiento polarizado. En este trabajo de tesis se pon...

  2. Evaluación del proceso integral para la obtención de aceite esencial y pectina a partir de la cáscara de naranja Integral evaluation process for obtaining pectin and essential oil

    Directory of Open Access Journals (Sweden)

    Ivonne Cerón-Salazar

    2011-06-01

    Full Text Available En este trabajo se presentó la extraccion de aceite esencial y pectina a partir dela cascara de naranja (Citrus sinensis como un proceso integral. Se realizó elproceso de extracción utilizando un simulador comercial adaptandose al procesoreal. Se realizaron pruebas experimentales con un kilogramo de cáscara de naranja procesado a las mismas condiciones de la simulacion con el fin de comparar los rendimientos obtenidos, logrando una concordancia aceptable. Posteriormente se escaló el proceso a una tonelada. Como resultado no solo se demuestran las ventajas del proceso integral, sino tambien la posibilidadde su implementacion a nivel industrial. Se concluye ademas que las tecnicas de simulacion son una herramienta poderosa que permite minimizar tiempo,costos y experimentacion en el diseñode procesos como los de extraccion de aceite esencial y pectina.In this paper, an alternative for essential oil and pectin extraction from orange peel (Citrus sinensis as an integral process was presented. The extraction units were simulated using commercial simulator software for real process conditions. Experimental tests were carried out with a kilogram of orange peel with the same conditions used in of the simulation with the aim of comparing the experimental and calculated yields. Subsequently, the process was scaled to 1000 kg. Advantages of the integrated process and its possibilities of implementation at industrial level were showed. Moreover, it was concluded that simulation techniques are powerful tools that allows minimizing time, costs and experimentation in the design of processes such as essential oil extraction and pectin extraction.

  3. Coronary arterial fistulas

    Directory of Open Access Journals (Sweden)

    Qureshi Shakeel A

    2006-12-01

    Full Text Available Abstract A coronary arterial fistula is a connection between one or more of the coronary arteries and a cardiac chamber or great vessel. This is a rare defect and usually occurs in isolation. Its exact incidence is unknown. The majority of these fistulas are congenital in origin although they may occasionally be detected after cardiac surgery. They do not usually cause symptoms or complications in the first two decades, especially when small. After this age, the frequency of both symptoms and complications increases. Complications include 'steal' from the adjacent myocardium, thrombosis and embolism, cardiac failure, atrial fibrillation, rupture, endocarditis/endarteritis and arrhythmias. Thrombosis within the fistula is rare but may cause acute myocardial infarction, paroxysmal atrial fibrillation and ventricular arrhythmias. Spontaneous rupture of the aneurysmal fistula causing haemopericardium has also been reported. The main differential diagnosis is patent arterial duct, although other congenital arteriovenous shunts need to be excluded. Whilst two-dimensional echocardiography helps to differentiate between the different shunts, coronary angiography is the main diagnostic tool for the delineation of the anatomy. Surgery was the traditional method of treatment but nowadays catheter closure is recommended using a variety of closure devices, such as coils, or other devices. With the catheter technique, the results are excellent with infrequent complications. Disease name and synonyms Coronary arterial fistulas Coronary arterial fistulas or malformations

  4. Anomalous right coronary artery arising from left anterior descending artery

    Directory of Open Access Journals (Sweden)

    M.L. Sreenivas Kumar

    2012-07-01

    Full Text Available A 54-year-old male patient presented with acute myocardial infarction involving left anterior descending and right coronary artery territories. Coronary angiogram showed a single coronary artery with right coronary artery arising from left anterior descending artery (LAD, which coursed anterior to right ventricular outflow tract and thrombotic lesion in mid left anterior descending artery before origin of right coronary artery. The patient was treated with thrombolytic therapy and glycoprotein IIb/IIIa inhibitors. Anomalous origin of right coronary artery as a branch of LAD is a very rare type of congenital coronary artery anomalies. It is important to recognize this anomaly as it can be associated with extensive myocardial ischemia and sudden cardiac death in young persons even without atherosclerosis.

  5. Left main coronary artery compression in pulmonary arterial hypertension

    DEFF Research Database (Denmark)

    Al-Badri, Kadhem Helo Abbas; Jensen, Jesper Møller; Christiansen, Evald H;

    2015-01-01

    In patients with pulmonary arterial hypertension (PAH), chest pain is most likely due to right ventricular demand ischemia. We report a patient with idiopathic PAH who developed severe angina due to extrinsic compression of the left main coronary artery (LMCA) from a dilated pulmonary artery trunk...

  6. Left Anterior Descending Artery-Pulmonary Artery Fistula

    Directory of Open Access Journals (Sweden)

    Turan Ege

    2011-12-01

    Full Text Available Despite the fact that coronary arteriovenous fistulas constitute approximately half (48% of coronary artery anomalies, they are rarely seen anomalies. In this report,we aim to present a coronary arteriovenous fistula case detected during a coronary angiography between left anterior descending artery and pulmonary artery.

  7. Carotid artery stenting

    International Nuclear Information System (INIS)

    An ipsilateral stenosis of the internal carotid artery is found in 10 - 15 % of all ischemic strokes and indicates an increased risk of a second stroke. Carotid artery stenting (CAS) is a therapy that is established for many years. CAS reveals complication rates and long-term efficacy comparable to carotid endarterectomy (TEA). Especially younger patients seem to benefit from CAS. Abilities and experiences of the therapist and the choice of the techniques used are critical for patient safety. The efficacy of CAS for treatment of asymptomatic carotid stenosis is probable but still unproven in prospective-randomized trial. (orig.)

  8. Carotid artery stenting; Karotisangioplastie

    Energy Technology Data Exchange (ETDEWEB)

    Fiehler, Jens [Universitaetsklinikum Eppendorf, Hamburg (Germany). Klinik und Poliklinik fuer Neuroradiologische Diagnostik und Intervention, Diagnostikzentrum

    2009-09-15

    An ipsilateral stenosis of the internal carotid artery is found in 10 - 15 % of all ischemic strokes and indicates an increased risk of a second stroke. Carotid artery stenting (CAS) is a therapy that is established for many years. CAS reveals complication rates and long-term efficacy comparable to carotid endarterectomy (TEA). Especially younger patients seem to benefit from CAS. Abilities and experiences of the therapist and the choice of the techniques used are critical for patient safety. The efficacy of CAS for treatment of asymptomatic carotid stenosis is probable but still unproven in prospective-randomized trial. (orig.)

  9. About Peripheral Artery Disease (PAD)

    Science.gov (United States)

    ... Tools & Resources Stroke More About Peripheral Artery Disease (PAD) Updated:Mar 23,2016 Peripheral artery disease (PAD) ... critical regions of the body. Quick Facts about PAD View an illustration of PAD The most common ...

  10. Pharmacological modulation of arterial stiffness.

    LENUS (Irish Health Repository)

    Boutouyrie, Pierre

    2011-09-10

    Arterial stiffness has emerged as an important marker of cardiovascular risk in various populations and reflects the cumulative effect of cardiovascular risk factors on large arteries, which in turn is modulated by genetic background. Arterial stiffness is determined by the composition of the arterial wall and the arrangement of these components, and can be studied in humans non-invasively. Age and distending pressure are two major factors influencing large artery stiffness. Change in arterial stiffness with drugs is an important endpoint in clinical trials, although evidence for arterial stiffness as a therapeutic target still needs to be confirmed. Drugs that independently affect arterial stiffness include antihypertensive drugs, mostly blockers of the renin-angiotensin-aldosterone system, hormone replacement therapy and some antidiabetic drugs such as glitazones. While the quest continues for \\'de-stiffening drugs\\

  11. Combination of rare right arterial variation with anomalous origins of the vertebral artery, aberrant subclavian artery and persistent trigeminal artery. A case report.

    Science.gov (United States)

    Ishihara, H; San Millán Ruíz, D; Abdo, G; Asakura, F; Yilmaz, H; Lovblad, K O; Rüfenacht, D A

    2011-09-01

    A 32-year-old woman hospitalized for subarachnoid hemorrhage showed rare arterial variation on the right side with anomalous origins of the vertebral artery, aberrant subclavian artery and persistent trigeminal artery. Angiography showed the right vertebral artery to originate from the right common carotid artery, the right subclavian artery to arise separately from the descending aorta, and persistent trigeminal artery on the right side. The possible embryonic mechanism of this previously unreported variant combination is discussed. PMID:22005696

  12. Liver cirrhosis and arterial hypertension

    DEFF Research Database (Denmark)

    Henriksen, Jens Henrik; Møller, Søren

    2006-01-01

    blood pressure. This review considers the alterations in systemic hemodynamics in patients with cirrhosis in relation to essential hypertension and arterial hypertension of the renal origin. Subjects with arterial hypertension (essential, secondary) may become normotensive during the development of...... cirrhosis, and arterial hypertension is rarely manifested in patients with cirrhosis, even in cases with renovascular disease and high circulating renin activity. There is much dispute as to the understanding of homoeostatic regulation in cirrhotic patients with manifest arterial hypertension. This most...

  13. Alteraciones metabólicas en hijos de padres con hipertensión arterial

    Directory of Open Access Journals (Sweden)

    Miguel H. Vicco

    2013-06-01

    Full Text Available El antecedente familiar de hipertensión arterial en jóvenes sanos se ha asociado a hiperinsulinemia, que a su vez produciría aumento en el cortisol sérico, confluyendo ambos mecanismos en daño endotelial renal con la presencia de microalbuminuria. El objetivo del estudio consistió en evaluar en jóvenes sanos, hijos de hipertensos, la asociación entre los niveles de insulinemia, cortisol sérico y microalbuminuria, debido a su relación con mayor riesgo cardiovascular. Se realizó un trabajo transeccional y correlacional en la ciudad de Santa Fe, incluyendo 145 jóvenes sanos mayores de 18 años de edad, que se asignaron a dos grupos: aquellos con antecedente de primer grado de hipertensión arterial esencial (grupo de estudio y sin dicho antecedente (grupo control. Se valoraron las concentraciones séricas en ayunas de insulina, cortisol, y los niveles de microalbuminuria en primera orina matutina. La media de edad fue de 20 ± 2.9 años, siendo el 58% mujeres. El grupo de estudio incluyó el 48% (n = 69. El 4.8% presentó insulino-resistencia, 13.8% microalbuminuria y el 52% hipercortisolinemia, no encontrándose diferencias significativas de los niveles séricos de insulina y cortisol, ni de microalbuminuria entre los grupos, así como tampoco correlación entre estas variables. No se encontró asociación entre el antecedente de 1er grado de hipertensión arterial y alteraciones de la homeostasis de insulina o cortisol así como tampoco evidencia de daño endotelial con presencia de microalbuminuria.

  14. Acceso abierto: ¿Es posible publicar "bueno, bonito y barato" en psicología y neurociencia?

    Directory of Open Access Journals (Sweden)

    Ángel Correa Torres

    2014-03-01

    Full Text Available Ante la insatisfacción de un número creciente de investigadores con el modelo de publicación clásico por el que algunas editoriales se lucran masivamente cobrando por el acceso al conocimiento científico, cabe preguntarse si es posible publicar en revistas de calidad que ofrezcan acceso libre a un precio razonable. En este artículo se ofrecen algunas respuestas aplicadas al contexto de la investigación en psicología y neurociencia. Aunque el momento actual no es el ideal, hay razones para ser optimista y pensar que en unos años asistiremos a una democratización real del conocimiento donde la política del acceso libre será la práctica dominante.

  15. Persistent Trigeminal Artery

    Directory of Open Access Journals (Sweden)

    Dijo T George

    2015-04-01

    Full Text Available Trigeminal artery is the commonest of the four primitive anastomoses between the carotid and vertebrobasilar system that may rarely persist in adults, with an angiographic incidence of 0.1 - 0.6%. We present the CT and MR angiograms of a patient who presented with a minor stroke and was detected to have this anomaly and briefly discuss the significance

  16. La Ley de Auditoria Española, su Significación y Bases para una Posible Reforma

    Directory of Open Access Journals (Sweden)

    Alejandro Larriba Díaz-Zorita

    1999-12-01

    Full Text Available La Ley de Auditoria lleva vigente algo más de una década y numerosas voces reclaman su modifica, por lo que este trabajo aborda las posibles orientaciones que podrían contemplarse en la reforma de algunos de los puntos más controvertidos de la ley actual. Se revisan así los problemas derivados del procedimiento de acceso a la profesión y del régimen transitorio inicial que dispuso la ley, el grado de intervencionismo y su posible reducción, el carácter de profesión de la actividad auditora, el papel de las corporaciones de auditores, la problemática de la formación continuada de los profesionales, los controvertidos temas de la responsabilidad, la independencia prestación de otros servicios paralelos a las empresas auditadas, y el contexto internacional en que desarrollarse la ley y sus consecuencias de cara a la libre circulación de auditores en la Unión Europea.The Spanish Auditory Law is ten years old now and there is now a generalised call for its reform & paper therefore puts forward some possible trends with in this reform, especially in the more controversial sections of the present law. Topics analyzed are the procedure to enter in the auditor career, specially in the transitory way observed by the law, the intervencionisme of the public authorities versus the regulation, the profesional character of the auditor's activity, the role of the auditor's associations problems of permanent training, the highlights themes of responsability, independence and the treatement of other relationships between auditors and companies: consultant and legal services and its implications and the influence in the new law of the international environment, mainly in the free circulation of auditing services in the European Union.

  17. CUANDO EL DESARROLLO SOCIAL SE HACE POSIBLE EN UN PAÍS POBRE: EL CASO DE COSTA RICA

    Directory of Open Access Journals (Sweden)

    Leonardo Garnier Rímolo

    2011-09-01

    Full Text Available Este artículo es una versión ligeramente modificada de un trabajo escrito a finales de 1994 a solicitud del Fondo de las Naciones Unidas para la Infancia (UNICEF, para ser incluido en una publicación que contendrá los análisis retrospectivos de los procesos de desarrollo social de varios países en desarrollo. Se trata de países que, como Costa Rica, han logrado avances significativos en los niveles de bienestar de sus poblaciones, a pesar de sus históricas limitaciones estructurales.La principal pregunta que se busca contestar en el artículo se podría plantear de la siguiente manera: ¿cómo fue posible que ese pequeño país que es Costa Rica, con una economía típica del capitalismo periférico, pudiera alcanzar niveles de calidad de vida más cercanos a los de los países industrializados que a los de los países en desarrollo, a pesar de que el producto económico que genera no supera el nivel medio-bajo en el contexto internacional?Para abordar esa cuestión, se ofrece una interpretación de los rasgos esenciales del proceso de desarrollo social que ha experimentado el país desde la mitad del siglo veinte hasta principios de la década de los noventa. También se analizan los factores que han hecho posible ese proceso, se resaltan los principales instrumentos institucionales que lo han impulsado, y se discute sobre su sostenibilidad futura.

  18. Insecticidal Activity of the Essential Oil Isolated from Azilia eryngioides (Pau Hedge et Lamond Against Two Beetle Pests Actividad Insecticida del Aceite Esencial Aislado de Azilia eryngioides (Pau Hedge et Lamond contra Dos Escarabajos Plaga

    Directory of Open Access Journals (Sweden)

    Asgar Ebadollah

    2011-09-01

    Full Text Available A large number of plant essential oils have been used against diverse insect pests since they, unlike conventional pesticides, present no risk to humans and the environment. This study was conducted to determine the toxicity of Azilia eryngioides (Pau Hedge et Lamond (Apiaceae essential oil against 1- to 7-d-old Sitophilus granarius (L. (Curculionidae and Tribolium castaneum (Herbst (Tenebrionidae adults. The essential oil was obtained from aerial parts of the plant using a Clevenger apparatus and analyzed by gas chromatography and mass spectrometry. The major constituents of the oil were α-Pinene and bornyl acetate. Fumigation bioassays revealed that A. eryngioides oil had a strong insecticidal activity on adult test insects that were exposed to 37.03, 74.07, 111.11, and 148.14 µL L-1 to estimate mean lethal time (LT50 values. Mortality increased as concentration and exposure time increased, and reached 100% at the 39-h exposure time and concentrations higher than 111.11 µL L-1. Another experiment was designed to determine the mean lethal concentration at the 24-h exposure time (LC50-, and these values indicated that S. granarius was more susceptible than T. castaneum. It can be concluded that the essential oil of A. eryngioides has potential against two stored-product pests, S. granarius and T. castaneum.Una gran cantidad de aceites esenciales de plantas se han utilizado como agentes de control biológico contra diversos insectos plaga, ya que no presentan riesgo para los seres humanos y el medio ambiente, a diferencia de los pesticidas convencionales. Se determinó la toxicidad del aceite esencial de Azilia eryngioides (Pau Hedge et Lamond (Apiaceae contra adultos de 1 a 7 días de edad de Sitophilus granarius (L. (Curculionidae y Tribolium castaneum (Herbst (Tenebrionidae. El aceite esencial se obtuvo de las partes aéreas de la planta utilizando un aparato de Clevenger y se analizó por cromatografía de gases por espectrometría de

  19. Chemical Composition and Allelopathyc Activity of Essential Oil of Lippia sidoides Cham Composición química y actividad alelopática del aceite esencial de Lippia sidoides Cham

    Directory of Open Access Journals (Sweden)

    Cláudia Araújo Marco

    2012-03-01

    Full Text Available The allelopathy is a process for which products of the secondary metabolism, as terpenes phenolic, of a certain vegetal intervene significantly, generally of antagonistic form, in the development of other species of plants. The objective of this work was to chemically characterize the essential oil of Lippia sidoides Cham. growing in the Cariri cearense region, Brazil, and evaluate the allelopathyc effect of this oil on the germination of lettuce (Lactuca sativa L., arugula (Eruca sativa Mill., and cauliflower (Brassica oleracea L., in pre-plantation application. The monoterpene thymol (84.90% has been identified as the principal constituent in the essential oil. The experiment was done in randomized complete block, in 4 x 3 factorial; being used four essential oil combinations applied in three different species in pre-plantation applications. Emergence velocity index (EVI, germination percentage and mean time to germination (MTG, had been analyzed through daily counting carried out until the 14th day after sowing. Through qualitative analysis performed by gas chromatography coupled with mass spectrometry (GC/MS were identified seven chemical constituents representing 97.82% of essential oil of L. sidoides, being that the constituent present in greater concentration in oil was the thymol (84.90%. Could be verified the occurrence of the negative allelopathyc effect of lettuce crop, because its present low EVI and greater MTG, for the other vegetable species there were no allelopathic effect.La alelopatía es un proceso mediante el cual productos metabólicos secundarios, tales como terpenos fenoles, producidos por una planta en particular interfieren significativamente, y de manera antagónica, en el desarrollo de otras especies vegetales. Nuestros objetivos fueron caracterizar químicamente el aceite esencial de Lippia sidoides Cham., cultivada en la región de Cariri Ceará, y evaluar el efecto alelopático del aceite aplicado en pre-siembra en

  20. Síntesis de estructuras alfa-metilén-gamma-butirolactónicas y análogos nitrogenados. Evaluación como posibles agentes antitumorales

    OpenAIRE

    Santos Álvarez, David

    2015-01-01

    [spa] El presente trabajo aborda la preparación de varios compuestos lactónicos naturales y sintéticos de posible actividad antitumoral, aplicando para ello los fundamentos y resultados de nuestras diferentes líneas de investigación como herramienta sintética. Como complemento hemos llevado a cabo la evaluación de su actividad citotóxica hacia líneas celulares de cáncer humano, para estudiar su aplicación como posibles agentes antineoplásicos. En las primeras aproximaciones, empleamos el pro...

  1. Síntesis de estructuras alfa-metilén-gamma-butirolactónicas y análogos nitrogenados. Evaluación como posibles agentes antitumorales

    OpenAIRE

    Santos Álvarez, David

    2015-01-01

    El presente trabajo aborda la preparación de varios compuestos lactónicos naturales y sintéticos de posible actividad antitumoral, aplicando para ello los fundamentos y resultados de nuestras diferentes líneas de investigación como herramienta sintética. Como complemento hemos llevado a cabo la evaluación de su actividad citotóxica hacia líneas celulares de cáncer humano, para estudiar su aplicación como posibles agentes antineoplásicos. En las primeras aproximaciones, empleamos el protoc...

  2. Basilar Artery Aneurysm at a Persistent Trigeminal Artery Junction

    Science.gov (United States)

    Aguiar, G.B.; Conti, M.L.M.; Veiga, J.C.E.; Jory, M.; Souza, R.B.

    2011-01-01

    Summary The trigeminal artery is an anastomosis between the embryonic precursors of the vertebrobasilar and carotid systems, and may persist into adult life. The association of the persistent primitive trigeminal artery (PTA) with cerebral aneurysm is well documented in the literature and, in general, aneurysms are located in the anterior circulation. We describe a patient who presented with a panencephalic Fisher III subarachnoid hemorrhage due to rupture of an intracranial aneurysm. Digital arteriography showed a saccular aneurysm in the middle third of the basilar artery, adjacent to the junction with a persistent trigeminal artery. She was submitted to endovascular treatment with embolization of the basilar artery aneurysm with coils. Aneurysms at the PTA junction with the basilar artery are rare. This paper describes a case of PTA associated with an aneurysm in the basilar artery at PTA junction and briefly reviews the literature. PMID:22005697

  3. Análisis del comportamiento de la demanda hotelera y su posible interferencia por el sistema de clasificación oficial de la oferta

    OpenAIRE

    Esteban Talaya, Águeda; Reinares Lara, Eva Marina

    1996-01-01

    Se ofrece una hipótesis asociada al problema derivado de la existencia de categorías hoteleras basada en la clasificación oficial previa de carácter administrativo y su posible interferencia en las relaciones empresa-mercado.

  4. El sueño de la transición. Los militares y los servicios de inteligencia que la hicieron posible [Recensiones

    OpenAIRE

    Olábarri-Gortázar, I. (Ignacio)

    2015-01-01

    Recensión de: Fernández-Monzón Altolaguirre, Manuel; Mata, Santiago, El sueño de la transición. Los militares y los servicios de inteligencia que la hicieron posible, Madrid, La Esfe-ra de los Libros, 2014. ISBN: 978-84-9060-183-9.

  5. Popliteal artery entrapment syndrome.

    Science.gov (United States)

    Klooster, N J; Kitslaar, P; Janevski, B K

    1988-06-01

    Two patients with unilateral popliteal artery entrapment syndrome (PAES) are reported. The importance of diligence in angiographic diagnosis and recognition of the so-called "functional" PAES group as a separate entity are stressed. It is inferred from our material that a surgical approach for PAES is to be advocated since surgical release of the entrapment can lead to complete resolution of symptoms regardless of aetiology. PMID:2837797

  6. Popliteal artery entrapment syndrome

    Energy Technology Data Exchange (ETDEWEB)

    Klooster, N.J.J.; Janevski, B.K.; Kitslaar, P.

    1988-06-01

    Two patients with unilateral popliteal artery entrapment syndrome (PAES) are reported. The importance of diligence in angiographic diagnosis and recognition of the so-called 'functional' PAES group as a separate entity are stressed. It is inferred from our material that a surgical approach for PAES is to be advocated since surgical release of the entrapment can lead to complete resolution of symptoms regardless of aetiology.

  7. Popliteal artery entrapment syndrome

    International Nuclear Information System (INIS)

    Two patients with unilateral popliteal artery entrapment syndrome (PAES) are reported. The importance of diligence in angiographic diagnosis and recognition of the so-called 'functional' PAES group as a separate entity are stressed. It is inferred from our material that a surgical approach for PAES is to be advocated since surgical release of the entrapment can lead to complete resolution of symptoms regardless of aetiology. (orig.)

  8. Gestational pulmonary arterial hypertension

    OpenAIRE

    Moll, Matthew; Payne, Julie G.; Tukey, Melissa H.; Farber, Harrison W.

    2015-01-01

    Pulmonary arterial hypertension (PAH) is a progressive disease marked by the irreversible pulmonary vascular changes of vasoconstriction, thrombosis, and proliferation of smooth muscle and endothelial cells. The untreated clinical course is characterized by progressive dyspnea and a median survival of less than 3 years. Many of these patients are of child-bearing age; however, pregnancy leads to physiologic changes that are particularly poorly tolerated in PAH, conferring a 30%–56% mortality....

  9. Idiopathic pulmonary arterial hypertension

    OpenAIRE

    Firth, Amy L.; Mandel, Jess; Yuan, Jason X.-J.

    2010-01-01

    Despite improved understanding of the pathobiology of pulmonary arterial hypertension (PAH), it remains a severe and progressive disease, usually culminating in right heart failure, significant morbidity and early mortality. Over the last decade, some major advances have led to substantial improvements in the management of PAH. Much of this progress was pioneered by work in animal models. Although none of the current animal models of pulmonary hypertension (PH) completely recapitulate the hum...

  10. Myocardial arterial spin labeling

    OpenAIRE

    Kober, Frank; Jao, Terrence; Troalen, Thomas; Nayak, Krishna S.

    2016-01-01

    Arterial spin labeling (ASL) is a cardiovascular magnetic resonance (CMR) technique for mapping regional myocardial blood flow. It does not require any contrast agents, is compatible with stress testing, and can be performed repeatedly or even continuously. ASL-CMR has been performed with great success in small-animals, but sensitivity to date has been poor in large animals and humans and remains an active area of research. This review paper summarizes the development of ASL-CMR techniques, c...

  11. Pulmonary arterial hypertension.

    OpenAIRE

    Montani, David; Günther, Sven; Dorfmüller, Peter; Perros, Frédéric; Girerd, Barbara; Garcia, Gilles; Jaïs, Xavier; Savale, Laurent; Artaud-Macari, Elise; Price, Laura; Humbert, Marc; Simonneau, Gérald; Sitbon, Olivier

    2013-01-01

    Pulmonary arterial hypertension (PAH) is a chronic and progressive disease leading to right heart failure and ultimately death if untreated. The first classification of PH was proposed in 1973. In 2008, the fourth World Symposium on PH held in Dana Point (California, USA) revised previous classifications. Currently, PH is devided into five subgroups. Group 1 includes patients suffering from idiopathic or familial PAH with or without germline mutations. Patients with a diagnosis of PAH should ...

  12. Niveles de la presión arterial y de estrés psicosocial en estudiantes de la Facultad de Salud, Universidad del Valle. Cali, Colombia, 2003-2004

    OpenAIRE

    José Ernesto Campo; John Jairo Reyes; Carolina Ortiz; Leonardo Quintero; Julián A. Herrera

    2006-01-01

    Objetivo: Evaluar los niveles de estrés psicosocial y de presión arterial en personas jóvenes sanas y su posible correlación. Materiales y métodos: Se realizó un estudio descriptivo en estudiantes de la Facultad de Salud de la Universidad del Valle en Cali, Colombia. Los niveles de presión arterial y de estrés psicosocial se evaluaron al determinar la percepción de la funcionalidad familiar (APGAR Familiar) y los hechos imprevistos de cambio de vida mediante la escala de reajuste social. ...

  13. Robotic coronary artery bypass for aberrant right coronary artery stenosis.

    Science.gov (United States)

    Chen, Kuan-chin Jean; Teefy, Patrick; Kiaii, Bob; Vezina, William C; Chu, Michael Wa

    2010-10-01

    Anomalous coronary arteries that course between the aorta and pulmonary artery are subject to compressive forces and can manifest angina, myocardial infarction and sudden death. The current report presents a young, female patient who presented with a short duration of severe, rapidly progressive angina despite optimal medical therapy. Combined computed tomography and myocardial perfusion scanning identified an anomalous dominant right coronary artery that appeared kinked at its origin between the aorta and main pulmonary artery. A robot-assisted right internal thoracic artery to right coronary artery bypass was performed, which was confirmed to be widely patent (FitzGibbon grade A) on routine intraoperative angiography. The procedure completely resolved the patient's angina symptoms. PMID:20931103

  14. Arterial responses during migraine headache

    DEFF Research Database (Denmark)

    Iversen, Helle Klingenberg; Nielsen, T H; Olesen, J;

    1990-01-01

    The superficial temporal artery has been thought to be the main focus of pain during migraine attacks, but its diameter has never been measured directly. The use of a new, high-resolution ultrasound machine to measure arterial size in 25 migraine patients with unilateral head pain showed that the...... lumen was wider on the painful than on the non-painful side during a migraine attack. The diameters of both radial arteries and the temporal artery on the non-painful side were smaller during than between attacks. The generalised vasoconstriction was not shared by the temporal artery on the affected...... side, which suggests a local vasodilatory response. The findings suggest that cephalic arteries may play a role in migraine pathogenesis....

  15. True aneurysm of brachial artery.

    Science.gov (United States)

    Hudorović, Narcis; Lovričević, Ivo; Franjić, Dario Bjorn; Brkić, Petar; Tomas, Davor

    2010-10-01

    True upper extremity peripheral artery aneurysms are a rarely encountered arterial disorder. Following computer-tomography angiographic (CT-a) imaging examination, true saccular aneurysm, originating from the left brachial artery was diagnosed in the 77-year-old female without history of trauma. The aneurysm was resected by surgical intervention, and primary repair of the brachial artery was performed by interposition of a part of great saphenous vein harvested from the left groin and creation of two end-to-end anastomoses between interposition graft and previously resected part of brachial artery. No complication was observed during the follow-up. Surgical intervention for upper extremity aneurysms should be initiated without delay. Factors combined with minimal morbidity associated with repair suggest that surgical repair should be performed routinely for true upper extremity arterial aneurysms. PMID:20865459

  16. Triple spontaneous cervical artery dissection

    International Nuclear Information System (INIS)

    A 39-year-old healthy man had several transient ischaemic attacks suggesting left internal carotid artery (ICA) occlusion. There were no vascular risk factors and no preceding trauma. Colour-coded duplex sonography suggested a pseudo-occlusion of the left ICA, and cerebral angiography demonstrated dissection of the left ICA and both vertebral arteries. Angiography 6 months later was completely normal. This underlines the importance of four vessel angiography in young patients with dissections of cervical arteries. (orig.)

  17. The right hepatic artery syndrome

    Institute of Scientific and Technical Information of China (English)

    Kazumi Miyashita; Katsuya Shiraki; Takeshi Ito; Hiroki Taoka; Takeshi Nakano

    2005-01-01

    Various benign and malignant conditions could cause biliary obstruction. Compression of extrahepatic bile duct (EBD) by right hepatic artery was reported as a right hepatic artery syndrome but all cases were compressed EBD from stomach side. Our case compressed from dorsum was not yet reported, so it was thought to be a very rare case. We present here the first case of bile duct obstruction due to the compression of EBD from dorsum by right hepatic artery.

  18. Desafíos de la educación secundaria en Argentina: Pensar juntos algunas transformaciones necesarias y posibles

    Directory of Open Access Journals (Sweden)

    Horacio Ademar Ferreyra

    2016-03-01

    Full Text Available A partir del conocimiento construido en un estudio acerca de las características y procesos de la Educación Secundaria en Argentina en el período 2000-2010, desarrollado con el propósito de caracterizar los principales retos y posibilidades de este tramo del sistema educativo, se presentan en este artículo algunas propuestas de cambio que implican transformaciones necesarias y posibles con la intención de aportar a la resignificación del nivel. Como alternativa a un enfoque jerárquico de arriba-abajo o abajo-arriba, que sitúa en la parte superior a los gobiernos y en la base a quienes trabajan en las escuelas, se propugnan otras lógicas y dinámicas para estas relaciones. Desde ellas, se enuncian algunas acciones prioritarias para las políticas educativas en los ámbitos escolar (micro, provincial (meso y federal (macro, con especial atención a sus interacciones. La idea central es la necesidad de una real apropiación de los cambios concertados en el nivel federal por parte de los sujetos (personas e instituciones que dan vida a la educación: las jurisdicciones y las escuelas.

  19. La virtualidad: un escenario posible para la construcción de conocimientos matemáticos

    Directory of Open Access Journals (Sweden)

    Guillermo Arraiz

    2012-04-01

    Full Text Available Es un hecho innegable que el fenómeno de la virtualidad ha impregnado todas las esferas sociales, culturales, económicas y educativas a escala global. En este contexto, el empleo de entornos virtuales de aprendizaje, específicamente en los procesos de enseñanza y aprendizaje de la matemática, plantea a docentes y estudiantes estrategias alternativas que resultan potencialmente valiosas en la construcción de conocimientos matemáticos. El propósito de este artículo es hacer un seguimiento exploratorio sobre algunos avances de la comunidad científica en el campo de la educación en línea para aproximar algunas reflexiones de índole tecnológica y didáctica que expongan la virtualidad como un escenario posible para la construcción de los conocimientos matemáticos. Aunque se identificaron patrones de resistencia y desconfianza manifiesta hacia la virtualización de la enseñanza matemática por parte de docentes y alumnos, se hace evidente el potencial de los medios virtuales, dada la curiosidad y disposición de docentes y estudiantes por estas experiencias de aprendizaje.

  20. Arterial mapping of lower limbs

    International Nuclear Information System (INIS)

    A bibliographic review is realized in the arterial mapping of lower limbs by ultrasonographic. The physical properties of the Doppler effect applied to diagnostic ultrasound are described. The anatomical characteristics of the general arterial system and specifically of the lower limbs arterial system are mentioned. Pathologies of the ischemic arterial disease of lower limbs are explained. The study characteristics of lower limbs arterial mapping are documented to determine its importance as appropriate method for the assessment of lower limb ischemia. An adequate arterial mapping of lower limbs is recognized in atherosclerotic ischemic disease as a reliable initial method alternative to arteriography. Arteriography is considered as reference pattern for therapeutic decision making in patients with critical ischemia of the lower limbs. Non-invasive methods to assess the arterial system of lower limbs has evidenced the advantages of the arterial mapping with Doppler, according to the consulted literature. The combination morphological and hemodynamic information has been possible and a map of the explored zone is made. The arterial mapping by ultrasonography has offered similar reliability to angiography

  1. [The single coronary artery].

    Science.gov (United States)

    Godart, F; Berzin, B; Rihani, R; Pecheux, M; Dutoit, A

    1992-04-01

    Single coronary artery is a fairly rare entity which may nevertheless be found in 0.4 per cent of coronary arteriograms. The authors report 3 cases seen in 2 departments of cardiology. In each patient, despite the existence of definite cardiovascular risk factors, this distribution was a factor worsening coronary ischemia, leading to complete thrombosis in one case. Although most often a chance discovery, a review of the literature justifies the attribution to this anomaly of the onset of angina, infarction or even sudden death. PMID:1642437

  2. Patent arterial duct

    OpenAIRE

    Martin Robin P; Elmasry Ola A; Forsey Jonathan T

    2009-01-01

    Abstract Patent arterial duct (PAD) is a congenital heart abnormality defined as persistent patency in term infants older than three months. Isolated PAD is found in around 1 in 2000 full term infants. A higher prevalence is found in preterm infants, especially those with low birth weight. The female to male ratio is 2:1. Most patients are asymptomatic when the duct is small. With a moderate-to-large duct, a characteristic continuous heart murmur (loudest in the left upper chest or infraclavi...

  3. Parent Artery Occlusion for Posterior Cerebral Artery Aneurysms

    OpenAIRE

    Hoya, K.; Nagaishi, M.; Yoshimoto, Y.; Morikawa, E.; H. Takahashi(NASA Goddard Space Flight Center, Greenbelt, USA)

    2006-01-01

    We review four cases of posterior cerebral artery (PCA) aneurysm, of which three showed intolerance of parent artery occlusion. In two, balloon test occlusion (BTO) indicated poor opaci- fication of the PCA branches from the anastomoses, and therefore, permanent occlusion was not attempted.

  4. Association between internal carotid artery dissection and arterial tortuosity

    Energy Technology Data Exchange (ETDEWEB)

    Saba, Luca; Piga, Mario [Azienda Ospedaliero Universitaria (A.O.U.), Department of Radiology, Monserrato, Cagliari (Italy); Argiolas, Giovanni Maria; Siotto, Paolo [Azienda Ospedaliero Brotzu (A.O.B.), Department of Radiology, di Cagliari (Italy); Sumer, Suna; Wintermark, Max [Neuroradiology Division, Neuroradiology, UVA Department of Radiology, Charlottesville, VA (United States); Raz, Eytan [New York University School of Medicine, Department of Radiology, New York, NY (United States); Sapienza University of Rome, Department of Neurology and Psychiatry, Rome (Italy); Sanfilippo, Roberto; Montisci, Roberto [Azienda Ospedaliero Universitaria (A.O.U.), Department of Vascular Surgery, di Cagliari (Italy)

    2014-10-18

    Carotid artery dissection is an important cause of ischemic stroke in all age groups, particularly in young patients. The purpose of this work was to assess whether there is an association between the presence of an internal carotid artery dissection (ICAD) and the arterial tortuosity. This study considered 124 patients (72 males and 52 females; median age 57 years) with CT/MR diagnosis of ICAD of the internal carotid artery were considered in this multi-centric retrospective study. The arterial tortuosity was evaluated and, when present, was categorized as elongation, kinking, or coiling. For each patient, both the right and left sides were considered for a total number of 248 arteries in order to have the same number of cases and controls. Fisher's exact test was applied to test the association between elongation, kinking, coiling, dissection, and the side affected by CAD. Fisher's exact test showed a statistically significant association between the ICAD and kinking (p = 0.0089) and coiling (p = 0.0251) whereas no statistically significant difference was found with arterial vessel elongation (p = 0.444). ICAD was more often seen on the left side compared to the right (p = 0.0001). These results were confirmed using both carotid arteries of the same patient as dependent parameter with p = 0.0012, 0.0129, and 0.3323 for kinking, coiling, and elongation, respectively. The presence of kinking and coiling is associated with ICAD. (orig.)

  5. Dual anterior descending coronary artery associated with coronary artery disease

    Directory of Open Access Journals (Sweden)

    Siqueira Luciane da L. V.

    2003-01-01

    Full Text Available The patient is a male with risk factors for coronary artery disease, who was referred for cardiac catheterization after acute myocardial infarction in the inferior wall. The patient underwent transluminal coronary angioplasty in the right coronary artery with successful stent implantation.

  6. Bilateral Internal Thoracic Artery Configuration for Coronary Artery Bypass Surgery

    Science.gov (United States)

    Boodhwani, Munir; Hanet, Claude; de Kerchove, Laurent; Navarra, Emiliano; Astarci, Parla; Noirhomme, Philippe; El Khoury, Gebrine

    2016-01-01

    Background— Bilateral internal thoracic arteries (BITA) have demonstrated superior patency and improved survival in patients undergoing coronary artery bypass grafting. However, the optimal configuration for BITA utilization and its effect on long-term outcome remains uncertain. Methods and Results— We randomly assigned 304 patients undergoing coronary artery bypass grafting using BITA to either in situ or Y grafting configurations. The primary end point was 3-year angiographic patency. Secondary end points included major adverse cardiac and cerebrovascular events (ie, death from any cause, stroke, myocardial infarction, or repeat revascularization) at 7 years. More coronary targets were able to be revascularized using internal thoracic arteries in patients randomized to Y grafting versus in situ group (3.2±0.8 versus 2.4±0.5 arteries/patient; PURL: http://www.clinicaltrials.gov. Unique identifier: NCT01666366. PMID:27406988

  7. Genetics Home Reference: pulmonary arterial hypertension

    Science.gov (United States)

    ... Home Health Conditions pulmonary arterial hypertension pulmonary arterial hypertension Enable Javascript to view the expand/collapse boxes. ... All Open All Close All Description Pulmonary arterial hypertension is a progressive disorder characterized by abnormally high ...

  8. Composición del aceite esencial de Tagetes lacera, planta endémica de Baja California Sur, México Composition of essential oil of Tagetes lacera, endemic plant from Baja California Sur, Mexico

    Directory of Open Access Journals (Sweden)

    Francisco Díaz-Cedillo

    2012-06-01

    Full Text Available Es escasa la información sobre la biología y química de Tagetes lacera Brand. (Asteraceae, especie endémica de Baja California Sur (BCS, México, que por su porte alto y presencia de aroma es una fuente de aceites esenciales útil para el control de plagas y enfermedades de cultivos agrícolas. A partir de partes aéreas de plantas en floración de T. lacera recolectadas en la sierra de la Laguna, BCS se obtuvo aceite esencial mediante hidrodestilación. Por medio del procedimiento de análisis CG-EM, se identificaron 6 compuestos principales: E-tagetona (26.2%, crisantenona (24.8%, verbenona (22.1%, α-thujeno (20.5%, β-pineno (3.1% y α-pineno (1.9%.It is scarce the background on the biology and chemistry of Tagetes lacera Brand. (Asteraceae, an endemic species from Baja California Sur (BCS, Mexico that considering its plant high and odor is an essential oil source to obtain biopesticides. From aerial parts of plants fully flowered of T. lacera picked in Sierra de la Laguna, BCS, essential oil was obtained by hydrodistillation. Using GC-MS analysis, 6 major compounds were identified: E-tagetone (26.2%, chrysanthenone (24.8%, verbenone (22.1%, α-thujene (20.5%, β-pinene (3.1%, α-pinene (1.9%.

  9. Pulmonary arterial hypertension : an update

    NARCIS (Netherlands)

    Hoendermis, E. S.

    2011-01-01

    Pulmonary arterial hypertension (PAH), defined as group 1 of the World Heart Organisation (WHO) classification of pulmonary hypertension, is an uncommon disorder of the pulmonary vascular system. It is characterised by an increased pulmonary artery pressure, increased pulmonary vascular resistance a

  10. Otro mundo es posible

    OpenAIRE

    Vidal-Beneyto, José

    2003-01-01

    El artículo trata de los cambios sucedidos tras la caída del muro de Berlín en 1989. El fin de la confrontación entre bloques con la desaparición de la Unión Soviética puso fin al orden mundial surgido tras la segunda guerra mundial. En ese mismo periodo, la revolución de las telecomunicaciones y los avances de la biotecnología anunciaban el nacimiento de una nueva sociedad, la sociedad de la información. Un nuevo termino hizo fortuna, la globalización. Con la llegada del nuevo siglo las nuev...

  11. Liver cirrhosis and arterial hypertension

    DEFF Research Database (Denmark)

    Henriksen, Jens Henrik; Møller, Søren

    2006-01-01

    blood pressure. This review considers the alterations in systemic hemodynamics in patients with cirrhosis in relation to essential hypertension and arterial hypertension of the renal origin. Subjects with arterial hypertension (essential, secondary) may become normotensive during the development of...... cirrhosis, and arterial hypertension is rarely manifested in patients with cirrhosis, even in cases with renovascular disease and high circulating renin activity. There is much dispute as to the understanding of homoeostatic regulation in cirrhotic patients with manifest arterial hypertension. This most......Characteristic findings in patients with cirrhosis are vasodilatation with low overall systemic vascular resistance, high arterial compliance, increased cardiac output, secondary activation of counter-regulatory systems (renin-angiotensin-aldosterone system, sympathetic nervous system, release of...

  12. Reconceptualización de la identidad personal y educación para la autodeterminación posible

    Directory of Open Access Journals (Sweden)

    Antonio BERNAL GUERRERO

    2009-11-01

    Full Text Available RESUMEN: En este artículo, procurando superar las tensiones dialécticas entre las ideas modernas y posmodernas, se analiza la identidad como construcción de significado en interacción y desde la narrativa personal. En este sentido, enfatizamos, dentro de la condición esencialmente dinámica de la identidad, su carácter proyectivo como «personalidad escogida». La identidad personal es una parte de la personalidad, esa parte que podemos imaginar, inventar, crear y escoger, con nuestras posibilidades y limitaciones individuales y situacionales, por nosotros mismos. Nuestra capacidad de elegir, de decidir, es ciertamente limitada. No obstante, en este ámbito se define la libertad humana, la cual concebimos aquí como nuestra capacidad de autodeterminación posible. Consecuentemente, refiriéndonos al propio sujeto, delimitamos los principales dominios formativos para la autodeterminación posible, desde la que cabe desplegar el descubrimiento de las estrategias educativas pertinentes para la construcción autónoma de la identidad.ABSTRACT: While attempting to overcome the dialectic tensions existing between modern and post-modern ideas, this article analyses identity as the construction of meaning in interaction and from the personal narrative. In this regard, we stress, within the essentially dynamic condition of personality, its projective character as the «chosen personality». Personal identity is one part of personality; this is the part that we ourselves, within our individual and situational possibilities and limitations, can imagine, invent, create and choose. Our capacity to choose, to decide is evidently limited yet within this restricted ambit human liberty, something that we regard here as being our possible capacity for self-determination, is defined. As a result, and referring to the subject him or herself, we define the principle formative ambits for this possible self-determination and thence proceed to discover the

  13. SIMILARIDADES CLINICOPATOLÓGICAS ENTRE PARATUBERCULOSIS Y ENFERMEDAD DE CROHN. ¿POSIBLE VÍNCULO ZOONÓTICO?

    Directory of Open Access Journals (Sweden)

    Johan Calderón

    2008-04-01

    Full Text Available EL artículo presenta a la luz de la literatura científica actual la asociación del Mycobacterium avium subespecie paratuberculosis con la enfermedad de Crohn, las principales similaridades clinicopatológicas. La revisión se limitó a las publicaciones contenidas en el programa HINARI de la WHO, en especial de Elservier Science, Bioline Internacional, Blackwell Publishing, BMJ Publishing, Lippincott Williams & Wilkins, Nature Publishing, PubMed, Springer Science y publicaciones de la Asociación Internacional para estudio de Paratuberculosis. Evidencias significativas apoyan un posible vinculo zoonótico entre las enfermedades. El aislamiento del Mycobacterium avium subespecie paratuberculosis en pacientes con enfermedad de Crohn desde muestras de intestino, leche, sangre periférica y nódulos linfáticos; de igual manera la respuesta inmune especifica a algunos antígenos de Mycobacterium en pacientes con la enfermedad; aunque estos hallazgos tienen cada uno sus propias controversias. La evidencia actualmente disponible no es suficiente para validar o negar al Mycobacterium avium subespecie paratuberculosis como agente causal de por lo menos algunos casos de enfermedad de Crohn. Los estudios son inconclusos en aceptar un vinculo zoonótico dada la naturaleza multifactorial de esta enfermedad. Se requieren estudios para determinar sí Mycobacterium es un agente espectador ó patogénico; paralelamente realizar estudios epidemiológicos a gran escala que permitan analizar la distribución geográfica y temporal de ambas enfermedades.

  14. El posible verdadero origen de la metodología transfacial The real origin of transfacial methodology

    Directory of Open Access Journals (Sweden)

    F. Hernández Altemir

    2009-12-01

    Full Text Available Siempre surgen, pese a los adelantos informáticos de un mundo cada vez más globalizado, conflictos sobre la autoría de procedimientos científicos y para ayudar a aclarar los que ocurren en el origen de la cirugía transfacial, es por lo que nos hemos entretenido siempre con apoyo bibliográfico, de poner orden, en los aspectos no sólo del posible verdadero origen y la autoría de esta tal como se entiende hoy día, sin olvidar a personalidades históricas que en el siglo XIX vislumbraron y cómo no, aportaron ideas de lo que podría venir y sobre todo, quien dejo escrito por primera vez el contenido y las verdaderas posibilidades de la misma, así como poner en su sitio a los que se incorporaron al procedimiento muy tarde con pretensiones de protagonismo.Despite technological advances in a globalized world conflicts always arise about authorship of scientific procedures. To help resolve the conflicts that arise about the origin of transfacial surgery we have been entertained with bibliographical support to organize the aspects of a possible origin and author as it is understood today. Without forgetting people in history that in the XIX century foreshadowed and provided ideas from which we could determine who was the first to write the content and true possibilities. Putting those who incorporated the procedure late, with pretensions of protagonism in their place.

  15. Aspectos jurídicos y perspectivas políticas de una posible retirada de la Unión Europea por parte del Reino Unido

    Directory of Open Access Journals (Sweden)

    Werner Miguel Kühn Baca

    2016-08-01

    Full Text Available El artículo ofrece un análisis de la situación actual de las relaciones entre el Reino Unido y la Unión Europea. El enfoque se encuentra en los aspectos jurídicos y las perspectivas políticas de una posible retirada por parte de este Estado miembro del proceso de integración europeo. Se evalúan los posibles escenarios y consecuencias, tomando en cuenta tanto el marco jurídico cómo el entorno político actual. En base a dicho análisis, se proponen soluciones que podrían satisfacer los intereses del Reino Unido y la Unión Europea.

  16. Sequential bilateral retinal artery occlusion

    Directory of Open Access Journals (Sweden)

    Padrón-Pérez N

    2014-04-01

    Full Text Available Noel Padrón-Pérez,1 Janny Rosario Aronés,2 Silvia Muñoz,1 Luis Arias-Barquet,1 Jorge Arruga1,31Department of Ophthalmology, Hospital Universitari de Bellvitge, 2Hospital de l'Esperança – Parc de Salut Mar, 3Institut Català de Retina, Barcelona, SpainAbstract: An 86 year old woman experienced a sequential bilateral loss of vision over a period of less than 24 hours. Clinical findings and complementary studies suggested a bilateral atherogenic embolic event. Initially, she presented a superior branch retinal artery occlusion in her right eye followed by a central retinal artery occlusion with cilioretinal artery sparing in her left eye. Some conservative maneuvers performed did not improve visual acuity in the left eye. Supra-aortic Doppler ultrasonography revealed mild right internal carotid artery stenosis and moderate left internal carotid artery stenosis with a small, smooth, and homogeneous plaque. The transthoracic echocardiography showed a severe calcification of the mitral valve with a mild-moderate rim of stenosis. Central retinal artery occlusion and branch retinal artery occlusion are characterized by painless monocular loss of vision. Clinical approach and management attempt to treat the acute event, find the source of the vascular occlusion, and prevent further vascular events from occurring. Giant cell arteritis is a potentially treatable cause of central retinal artery occlusion and should be excluded in every single patient over 50 years old.Keywords: loss of vision, branch retinal artery occlusion, central retinal artery occlusion, Hollenhorst plaque

  17. Patent arterial duct

    Directory of Open Access Journals (Sweden)

    Martin Robin P

    2009-07-01

    Full Text Available Abstract Patent arterial duct (PAD is a congenital heart abnormality defined as persistent patency in term infants older than three months. Isolated PAD is found in around 1 in 2000 full term infants. A higher prevalence is found in preterm infants, especially those with low birth weight. The female to male ratio is 2:1. Most patients are asymptomatic when the duct is small. With a moderate-to-large duct, a characteristic continuous heart murmur (loudest in the left upper chest or infraclavicular area is typical. The precordium may be hyperactive and peripheral pulses are bounding with a wide pulse pressure. Tachycardia, exertional dyspnoea, laboured breathing, fatigue or poor growth are common. Large shunts may lead to failure to thrive, recurrent infection of the upper respiratory tract and congestive heart failure. In the majority of cases of PAD there is no identifiable cause. Persistence of the duct is associated with chromosomal aberrations, asphyxia at birth, birth at high altitude and congenital rubella. Occasional cases are associated with specific genetic defects (trisomy 21 and 18, and the Rubinstein-Taybi and CHARGE syndromes. Familial occurrence of PAD is uncommon and the usual mechanism of inheritance is considered to be polygenic with a recurrence risk of 3%. Rare families with isolated PAD have been described in which the mode of inheritance appears to be dominant or recessive. Familial incidence of PAD has also been linked to Char syndrome, familial thoracic aortic aneurysm/dissection associated with patent arterial duct, and familial patent arterial duct and bicuspid aortic valve associated with hand abnormalities. Diagnosis is based on clinical examination and confirmed with transthoracic echocardiography. Assessment of ductal blood flow can be made using colour flow mapping and pulsed wave Doppler. Antenatal diagnosis is not possible, as PAD is a normal structure during antenatal life. Conditions with signs and symptoms of

  18. A case of primitive persistent hypoglossal artery

    Energy Technology Data Exchange (ETDEWEB)

    Park, C. K.; Koh, B. H.; Kim, Y. S.; Kang, S. R. [Hangyang University College of Medicine, Seoul (Korea, Republic of)

    1979-06-15

    Three kinds of carotid-basilar anastomosis have been found, they were named as persistent primitive trigeminal artery, persistent primitive acoustic (or otic) artery and persistent primitive hypoglossal artery, among them, the persistent primitive hypoglossal artery is by far the least common type of the internal carotid-basilar anastomosis which have been demonstrate in human postembryonic stages. Persistent primitive by hypoglossal artery is usually found incidentally. This vascular anomaly, however,have been reported to be associated with multiple congenital anomalies, such as unilateral or bilateral vertebral artery hypoplasia, absence of the posterior communicating artery, hypoplasia of the proximal portion of the posterior cerebral artery, aneurysm of the circle of Willis, the origin of both pericallosal arteries from a single anterior cerebral artery, retarded mental development dating from infancy, carotid-cavernous fistula formation etc. A case of persistent primitive hypoglossal artery in an young Korean male was reported with brief review of the literature.

  19. Spontaneous Coronary Artery Dissection.

    Science.gov (United States)

    Tweet, Marysia S; Gulati, Rajiv; Hayes, Sharonne N

    2016-07-01

    Spontaneous coronary artery dissection is an important etiology of nonatherosclerotic acute coronary syndrome, myocardial infarction, and sudden death. Innovations in the catheterization laboratory including optical coherence tomography and intravascular ultrasound have enhanced the ability to visualize intimal disruption and intramural hematoma associated with SCAD. Formerly considered "rare," these technological advances and heightened awareness suggest that SCAD is more prevalent than prior estimates. SCAD is associated with female sex, young age, extreme emotional stress, or extreme exertion, pregnancy, and fibromuscular dysplasia. The clinical characteristics and management strategies of SCAD patients are different than for atherosclerotic heart disease and deserve specific consideration. This review will highlight recent discoveries about SCAD as well as describe current efforts to elucidate remaining gaps in knowledge. PMID:27216840

  20. Coronary artery disease (CAD)

    International Nuclear Information System (INIS)

    The detection of myocardial ischemia is the most relevant indication of myocardial perfusion scintigraphy. P. Marie exposes the sensibility and specificity of the method, based on an analysis of literature. Myocardial perfusion scintigraphy gives prognostical informations: among them, should be highlighted the excellent prognosis of a normal perfusion scintigraphy even in patients with significant coronary stenosis and the poor prognosis of extensive perfusion defects at stress. P. Rigo details echocardiographic techniques and nuclear medicine techniques to assess patients with coronary artery disease. He analyses the pathophysiological principles and clinical indications of these techniques. Then, he exposes a quantification analysis software based on bull'eyes representation. M. Slama points out the complementarity of coronary angiography and myocardial perfusion scintigraphy. (authors)

  1. Peripheral artery atherectomy

    International Nuclear Information System (INIS)

    Twenty-one femoropopliteal percutaneous transluminal atherectomies were performed with the Simpson catheter. Evaluation included clinical examination, Doppler ultrasonography (ankle-arm index, before and immediately and 1,3 and 6 months after atherectomy), and angiography (6 months after or for clinical worsening). Twenty of 21 procedures achieved satisfactory vessel patency, with the addition of complementary angioplasty for residual stenosis over 30% (one of three cases). Early thrombosis occurred in only one of 21 cases (absence of platelet inhibitor pretherapy), and no distal embolization occurred. Six-month follow-up showed stable improvements in 11 of 12 patients and restenosis in only one (absence of platelet inhibitor pretherapy). Preliminary results indicate that atherectomy is the method of choice for restoring large lumens, with minimal arterial wall injury and fewer cases of restenosis than with angioplasty

  2. Anomalous Origin of Right Coronary Artery from Distal Left Circumflex Artery: A Very Rare Variant of Single Coronary Artery Anomaly

    OpenAIRE

    Arash Gholoobi

    2016-01-01

    Among coronary anomalies, Single Coronary Artery (SCA) is a rare anomaly in which one coronary artery stems from a single coronary ostium from the aortic sinuses, nourishing the entire heart. A very rare subtype of this anomaly is the anomalous origin of the Right Coronary Artery (RCA) from the distal Left Circumflex (LCx) artery.

  3. Cerebellar arteries originating from the internal carotid artery: angiographic evaluation and embryologic explanations

    Energy Technology Data Exchange (ETDEWEB)

    Lee, Jae Young; Han, Moon Hee; Yu, In Gyu; Chang, Ki Hyun [Seoul National Univ. College of Medicine, Seoul (Korea, Republic of); Kim, Eui Jong [Kyunghee Univ. College of Medicine, Seoul (Korea, Republic of); Kim, Dae Ho [Soonchunhyang Univ. College of Medicine, Asan(Korea, Republic of)

    1997-06-01

    To find and describe the cerebellar arteries arising from the internal carotid artery, explain them embryologically, and evaluate their clinical implication. To determine the point in the internal carotid artery from which the cereballar artery arose anomalously, consecutive angiographic studies performed in the last three years were reviewed. The distribution of such anomalous cerebellar arteries, the point in the internal carotid artery from which the anomalous vessels originated, and associated findings were analyzed. Five anomalous origins of cerebellar arteries arising arising directly from the internal carotid artery were found in five patients. Three anterior inferior cerebellar arteries (AICA) and one common trunk of an AICA and a posterior inferior cerebellar artery (PICA) were found to originate from the internal carotid artery at a point close to the origin of the primitive trigeminal artery. A PICA arose from an artery presenting a course similar to the proatlantal intersegmental artery. Intracranial aneurysms in two patients, Moyamoya disease in one, and facial arteriovenous malformation in one. In our series, AICAs supplied from the arteries considered to be persistent trigeminal artery variants were the most common type. A correlation between type of anomalous cerebellar artery and type of carotid-vertebrobasilar anastomosis may exist. Cerebellar arteries originating anomalously from the internal carotid artery seem to occur as a result of the persistence of carotid-vertebrobasilar anastomoses associated with incomplete fusion of the longitudinal neural arteries. An understanding of these anomalous cerebellar arteries may help prevent accidents during therapeutic embolization and surgical treatment, as well as misinterpretation.

  4. STUDY OF MEDIAL CIRCUMFLEX ARTERY

    Directory of Open Access Journals (Sweden)

    Pavan P Havaldar

    2014-06-01

    Full Text Available Background: The proper knowledge of the course and ramification of blood vessels of lower limbs is very important for surgeons and interventional radiologist. Medial circumflex femoral artery usually originates from posteromedial aspect of the profunda femoris, but often originates from femoral artery itself. It has an important role in supplying blood to femoral neck and head, fatty tissue in acetabular fossa and used in flaps reconstructive surgery. Methods: 50 adult lowerlimbs were procured from embalmed cadavers of J.J.M. Medical College and S.S.I.M.S & R.C, Davangere, Karnataka, India for the study. Dissection of femoral triangle was carried out according to Cunningham’s manual. Site and mode of origin of the branches of femoral artery were studied, configuration of the femoral origins of medial and lateral circumflex femoral artery and their prevalence were studied. Results: Out of 50 extremities, Medial circumflex femoral artery took origin from profunda femoris in 41 specimens and from femoral artery in 9 specimens. Conclusion: The knowledge of normal origin and variation of medial circumflex femoral artery is very valuable in preventing iatrogenic injury to these vessels during surgical procedures of femoral triangle.

  5. Access to the ophthalmic artery by retrograde approach through the posterior communicating artery for intra-arterial chemotherapy of retinoblastoma

    Energy Technology Data Exchange (ETDEWEB)

    Pham, Chi-Tuan; Blanc, Raphael; Pistocchi, Silvia; Bartolini, Bruno; Piotin, Michel [Fondation Rothschild Hospital, Department of Interventional Neuroradiology, Paris (France); Lumbroso-Le Rouic, Livia [Institut Curie, Department of Ocular Oncology, Paris (France)

    2012-08-15

    Intra-arterial infusion of chemotherapy into the ophthalmic artery for treatment of retinoblastoma has been realized after catheterization of the internal carotid and temporary balloon occlusion beyond the orifice of the ophthalmic artery, or more recently after superselective canulation of the ophthalmic artery by a microcatheter. The superselective catheterization of the ophthalmic artery could be cumbersome because of the implantation of the ostium on the carotid siphon or because of the tortuosity of the carotid siphon. We report our experience of using a retrograde approach through the posterior communicating artery that allows a more direct angle of access to the origin of the ophthalmic artery. (orig.)

  6. Access to the ophthalmic artery by retrograde approach through the posterior communicating artery for intra-arterial chemotherapy of retinoblastoma

    International Nuclear Information System (INIS)

    Intra-arterial infusion of chemotherapy into the ophthalmic artery for treatment of retinoblastoma has been realized after catheterization of the internal carotid and temporary balloon occlusion beyond the orifice of the ophthalmic artery, or more recently after superselective canulation of the ophthalmic artery by a microcatheter. The superselective catheterization of the ophthalmic artery could be cumbersome because of the implantation of the ostium on the carotid siphon or because of the tortuosity of the carotid siphon. We report our experience of using a retrograde approach through the posterior communicating artery that allows a more direct angle of access to the origin of the ophthalmic artery. (orig.)

  7. Peripheral arterial stenosis and coronary artery disease coincidence

    Directory of Open Access Journals (Sweden)

    Reza Ghasemi

    2014-12-01

    Full Text Available Atherosclerosis is a chronic slow-developing condition affecting medium-size and large blood vessels. It is the principal underlying pathology of coronary heart disease and stroke. In some countries, coronary artery disease (CAD is the cause of nearly half (48% of the deaths and, loss of productivity life. Peripheral arterial disease (PAD is defined as atherosclerosis in peripheral arteries instead of coronary arteries. CAD and PAD have same risk factors and underlying pathophysiological processes. Therefore, patient with CAD should be considered for PAD. Ankle brachial index (ABI, duplex sonography, and some other non-invasive techniques are recommended for PAD diagnosis in patients with the history of CAD. Pharmacotherapy, endovascular interventions, and surgical management could be chosen according to the patient’s situation. Cardiologists and general practitioners should consider PAD in a patient with CAD or DM as a strong correlated disease.      

  8. Local Intra-Arterial Fibrinolysis in Acute Basilar Artery Occlusion

    OpenAIRE

    Enomoto, Y.; Yoshimura, S.; Kitajima, H.; Tamakawa, N.; Iwama, T

    2007-01-01

    Acute basilar artery (BA) occlusion is typically associated with poor outcome; however newer diagnostic and treatment modalities have the potential to improve prognosis. In this study, six patients with acute BA occlusion were followed and the effectiveness of local intra-arterial fibrinolysis (LIF) and subsequent percutaneous transluminal angioplasty (PTA) with a balloon catheter were assessed. Of the six patients with BA occlusion observed in this study, two had extended brain stem infarcti...

  9. DE LA INNOVACIÓN DESEADA A LA INNOVACIÓN POSIBLE. ESCUELAS ALTERADAS POR LAS TIC

    Directory of Open Access Journals (Sweden)

    Mª Lourdes Montero

    2010-01-01

    , reflexionar, practicar y evaluar los cambios posibles utilizando las diferentes versiones de las TIC´s.

  10. Apología y censura: posibles autores de las crónicas favorables a Pedro I de Castilla

    Directory of Open Access Journals (Sweden)

    González de Fauve, María Estela

    2006-06-01

    Full Text Available

    The present historiography considers that from the times of Pedro I of Castile, favorable stories to this king must have existed which were destroyed after the triumph of the Trastámara dynasty, only interested in making sure a negative picure of the ";Cruel"; king was shown. In this work we have analyzed possible authors of the chronicles called ";true"; versus Ayala's ";false";, as well as the Relación de la vida del Rey D. Pedro attributed to Gracia Dei. The research allows us to conclude that various characteristics attributed to these characters, as well as the authorship of the chronicles they are adscripted to, are part of an advertising campaign started in the sixteenth century by one branch of the Castilla lineage that looks for the reaffirmation as legitimate descendants of Pedro I.



    La historiografía actual considera que, desde la época de Pedro I de Castilla, debieron existir obras favorables a este rey que fueron destruidas, tras el triunfo de la dinastía Trastámara, interesada en que sólo se difundiera una imagen negativa del rey ";Cruel";.En este trabajo analizamos los posibles autores de esas crónicas llamadas “verdaderas” frente a la “fingida” de Ayala, así como la Relación de la vida del Rey D.Pedro... atribuida a Gracia Dei . La investigación nos permite concluir que varias de las características atribuidas a estos personajes, así como la autoría de las crónicas que se les atribuyen, forman parte de una campaña propagandística iniciada en el siglo XVI por una rama del linaje de los Castilla que busca reafirmarse como descendencia legítima de Pedro I.

  11. Peripheral artery disease in patients with coronary artery disease.

    Science.gov (United States)

    Atmer, B; Jogestrand, T; Laska, J; Lund, F

    1995-03-01

    The prevalence of peripheral vascular disease in patients with coronary artery disease has been investigated in many different ways and depends on the diagnostic methods and the definition of the atherosclerotic manifestations in the different vascular beds. In this study we used the non-invasive methods digital volume pulse plethysmography and ankle and toe blood pressure measurements to identify arterial abnormalities in the lower limbs in 58 patients (49 males and 9 females; age 37-72 years) examined with coronary angiography. The prevalence of peripheral artery disease was 22%, in agreement with the results of most previous investigations. There was a tendency towards increasing prevalence of peripheral artery disease with more advanced coronary artery disease: 14% of the patients with no or minimal coronary atheromotous lesions, 18% of the patients with moderate coronary atheromotous lesions and 32% of the patients with marked coronary atheromotous disease. For this reason a non-invasive investigation of the peripheral arterial circulation should be included early in the clinical consideration of patients with chest pain or similar symptoms suggesting coronary heart disease. Toe pressure measurement appears to be the most appropriate technique being rather simple in management and also in evaluation of results. PMID:7658111

  12. Aberrant ovarian artery arising from the common Iliac artery: Case report

    Energy Technology Data Exchange (ETDEWEB)

    Kim, Won Kyung [Dept. of Radiology, Soonchunhyang University Bucheon Hospital, Soonchunhyang University College of Medicine, Bucheon (Korea, Republic of); Yang, Seung Boo; Lee, Jae Myeong [Dept. of Radiology, Soonchunhyang University Gumi Hospital, Soonchunhyang University College of Medicine, Gumi (Korea, Republic of); Goo, Dong Erk; Kim, Yong Jae; Chang, Yun Woo [Dept. of Radiology, Soonchunhyang University Seoul Hospital, Soonchunhyang University College of Medicine, Seoul (Korea, Republic of)

    2013-01-15

    A 46-year-old Vietnamese woman received embolization therapy in order to control postpartum hemorrhage. Angiography revealed an aberrant ovarian artery arising from the right common iliac artery. Superselective catheterization and subsequent embolization of the aberrant ovarian artery and bilateral uterine arteries were performed. Precise knowledge of the anatomic variations of the ovarian artery is important for successful embolization.

  13. Pulmonary arterial hypertension.

    Science.gov (United States)

    Montani, David; Günther, Sven; Dorfmüller, Peter; Perros, Frédéric; Girerd, Barbara; Garcia, Gilles; Jaïs, Xavier; Savale, Laurent; Artaud-Macari, Elise; Price, Laura C; Humbert, Marc; Simonneau, Gérald; Sitbon, Olivier

    2013-01-01

    Pulmonary arterial hypertension (PAH) is a chronic and progressive disease leading to right heart failure and ultimately death if untreated. The first classification of PH was proposed in 1973. In 2008, the fourth World Symposium on PH held in Dana Point (California, USA) revised previous classifications. Currently, PH is devided into five subgroups. Group 1 includes patients suffering from idiopathic or familial PAH with or without germline mutations. Patients with a diagnosis of PAH should systematically been screened regarding to underlying mutations of BMPR2 gene (bone morphogenetic protein receptor type 2) or more rarely of ACVRL1 (activine receptor-like kinase type 1), ENG (endogline) or Smad8 genes. Pulmonary veno occusive disease and pulmonary capillary hemagiomatosis are individualized and designated as clinical group 1'. Group 2 'Pulmonary hypertension due to left heart diseases' is divided into three sub-groups: systolic dysfonction, diastolic dysfonction and valvular dysfonction. Group 3 'Pulmonary hypertension due to respiratory diseases' includes a heterogenous subgroup of respiratory diseases like PH due to pulmonary fibrosis, COPD, lung emphysema or interstitial lung disease for exemple. Group 4 includes chronic thromboembolic pulmonary hypertension without any distinction of proximal or distal forms. Group 5 regroup PH patients with unclear multifactorial mechanisms. Invasive hemodynamic assessment with right heart catheterization is requested to confirm the definite diagnosis of PH showing a resting mean pulmonary artery pressure (mPAP) of ≥ 25 mmHg and a normal pulmonary capillary wedge pressure (PCWP) of ≤ 15 mmHg. The assessment of PCWP may allow the distinction between pre-capillary and post-capillary PH (PCWP > 15 mmHg). Echocardiography is an important tool in the management of patients with underlying suspicion of PH. The European Society of Cardiology and the European Respiratory Society (ESC-ERS) guidelines specify its role

  14. Revascularisation of atherosclerotic mesenteric arteries

    DEFF Research Database (Denmark)

    Christensen, Max Greve; Lorentzen, Jørgen Ewald; Schroeder, T V

    1994-01-01

    25 patients, chronic ischaemia in 53 and prophylactic reconstruction in connection with aortic surgery in 12 patients. The superior mesenteric artery (SMA) was revascularised in 87 patients and the coeliac axis or common hepatic artery in six. Thus, only three patients had both territories......OBJECTIVES: Visceral artery surgery is well known to vascular surgeons, but most have limited personal experience. We report our experience with 90 patients treated for atherosclerotic lesions of the visceral arteries during a 25-year period 1968-1993. DESIGN: Retrospective study. SETTING...... revascularised. Thromboendarterectomy was performed in 15 patients, transposition of the SMA directly into the infrarenal aorta in 30 and bypass in 48 patients. CHIEF OUTCOME MEASURES: Cumulative symptom-free and survival rates. MAIN RESULTS: The overall perioperative (30 days) mortality rate was 13%, mainly...

  15. Irradiation injury to large arteries

    International Nuclear Information System (INIS)

    Four cases of irradiation injury to large arteries following radiotherapy treatment are presented and the literature is reviewed. Three patterns of injury have emerged: 1) intimal damage resulting in mural thrombosis presenting within 5 years of irradiation, 2) fibrotic occlusion presenting within 10 years of injury, and 3) a predisposition to the development of atheroma together with periarterial fibrosis associated with a latent interval of 20 or more years. The treatment of choice is a bypass procedure of the arterial lesion. (author)

  16. Biomarkers of Peripheral Arterial Disease

    OpenAIRE

    Cooke, John P.; Wilson, Andrew M.

    2010-01-01

    Atherosclerotic arterial occlusive disease affecting the lower extremities is also known as peripheral arterial disease (PAD). This disorder affects 8 to 12 million individuals in the United States, and is also increasingly prevalent in Europe and Asia (1–4). Unfortunately, most patients are not diagnosed and are not optimally treated. A blood test for PAD, if sufficiently sensitive and specific, would be expected to improve recognition and treatment of these individuals. Even a biomarker pan...

  17. Pulmonary arterial hypertension: an update

    OpenAIRE

    Hoendermis, E.S.

    2011-01-01

    Pulmonary arterial hypertension (PAH), defined as group 1 of the World Heart Organisation (WHO) classification of pulmonary hypertension, is an uncommon disorder of the pulmonary vascular system. It is characterised by an increased pulmonary artery pressure, increased pulmonary vascular resistance and specific histological changes. It is a progressive disease finally resulting in right heart failure and premature death. Typical symptoms are dyspnoea at exercise, chest pain and syncope; furthe...

  18. Arterial Pressure Monitoring in Mice

    OpenAIRE

    Zhao, Xin; Ho, David; Gao, Shumin; Hong, Chull; Vatner, Dorothy E.; Vatner, Stephen F.

    2011-01-01

    The use of mice for the evaluation and study of cardiovascular pathophysiology is growing rapidly, primarily due to the relative ease for developing genetically engineered mouse models. Arterial pressure monitoring is central to the evaluation of the phenotypic changes associated with cardiovascular pathology and interventions in these transgenic and knockout models. There are four major techniques for measuring arterial pressure in the mouse: tail cuff system, implanted fluid filled catheter...

  19. Liver cirrhosis and arterial hypertension

    Institute of Scientific and Technical Information of China (English)

    Jens H Henriksen; Soren Moller

    2006-01-01

    Characteristic findings in patients with cirrhosis are vasodilatation with low overall systemic vascular resistance, high arterial compliance, increased cardiac output, secondary activation of counter-regulatory systems (renin-angiotensin-aldosterone system,sympathetic nervous system, release of vasopressin),and resistance to vasopressors. The vasodilatory state is mediated through adrenomedullin, calcitonin generelated peptide, nitric oxide, and other vasodilators,and is most pronounced in the splanchnic area.This constitutes an effective (although relative)counterbalance to increased arterial blood pressure.This review considers the alterations in systemic hemodynamics in patients with cirrhosis in relation to essential hypertension and arterial hypertension of the renal origin. Subjects with arterial hypertension (essential, secondary) may become normotensive during the development of cirrhosis, and arterial hypertension is rarely manifested in patients with cirrhosis, even in cases with renovascular disease and high circulating renin activity. There is much dispute as to the understanding of homoeostatic regulation in cirrhotic patients with manifest arterial hypertension. This most likely includes the combination of vasodilatation and vasoconstriction in parallel.

  20. Las “respuestas lentas” a la angiotensina II, la activación de la proteína Src y del factor de crecimiento epidérmico en la génesis de la hipertensión esencial

    OpenAIRE

    Sabas Iván Gómez; Ezequiel A. Piccione; Carlos A. Feldstein; J. Carlos Romero

    2005-01-01

    La hipertensión esencial es inducida por disfunción renal. Receptores normotensos de riñones de hipertensos desarrollan hipertensión y viceversa. La alteración renal más importante es el desacople del SRA respecto del nivel de sodio. El estrés oxidativo (ST-OX) es estimulado cuando los niveles de angiotensina II (Ang II) son inapropiados respecto del sodio corporal total. El ST-OX potencia el efecto vasoconstrictor de la Ang II por disminución del óxido nítrico (NO) y/o por incremento de los ...

  1. Etnobotánica, anatomía y caracterización físico-química del aceite esencial de Baccharis obovata Hook. et Arn. (Asteraceae: Astereae) Ethnobotany, anatomy and physicochemical characterization of essential oil of Baccharis obovata Hook. et Arn. (Asteraceae: Astereae)

    OpenAIRE

    Soledad Molares; Silvia Beatriz González; Ana Ladio; María Agueda Castro

    2009-01-01

    Baccharis obovata Hook. et Arn. es una especie aromática conocida como "wautro", y forma parte destacada de la herbolaria Mapuche de la Patagonia Argentina. Los objetivos fueron investigar la etnobotánica, la anatomía del vástago, y caracterizar físicoquímicamente el aceite esencial presente en el mismo. Se realizaron entrevistas a pobladores de dos comunidades Mapuches del noroeste de la Patagonia Argentina, y se colectó material vegetal para su observación al microscopio óptico y de barrido...

  2. Evaluación del Poder Antioxidante de Fracciones de Aceite Esencial Crudo de Schinus molle L. obtenidas por Destilación al Vacío Evaluation of the Antioxidant Power of Fractions of Schinus molle L. Essential Oil obtained by Vacuum Distillation

    OpenAIRE

    María S Guala; Heriberto V Elder; Gustavo Perez; Alejandro Chiesa

    2009-01-01

    Se han evaluado las características antioxidantes del aceite esencial crudo de Schinus molle L. (molle, aguaribay), y se han comparado con las fracciones del mismo aceite obtenidas por destilación al vacío. Las muestras obtenidas se analizaron mediante cromatografía GS/MS, y se les determinó la eficiencia antioxidante utilizando el método DPPH, 2,2 Diphenyl 1 picrylhydrazyl. La fracción más pesada contiene mayor cantidad de Terpinen-4-ol y Germacreno D, compuestos colectores de radicales libr...

  3. Efecto del aceite esencial de orégano Lippia origanoides Kunth enel desempeño productivo de ponedoras marrón y la peroxidación lipídica de huevos enriquecidos con ácidos grasos poliinsaturados durante su almacenamiento

    OpenAIRE

    Ortiz Cuadros, Ronnal Esneyder

    2014-01-01

    El uso del aceite esencial de orégano (AEO) (Lippia origanoides Kunth) en sistemas de alimentación de ponedoras es poco documentado, por lo tanto, el objetivo de este trabajo consistió en la evaluación del efecto de inclusión del AEO sobre el desempeño productivo de las aves, el perfil de ácidos grasos de los lípidos de la yema del huevo, la estabilidad oxidativa durante el almacenamiento, la calidad sensorial y organoléptica de huevos enriquecidos con AGPI. Se utilizaron 216 ponedoras asigna...

  4. Arterial function of carotid and brachial arteries in postmenopausal vegetarians

    Directory of Open Access Journals (Sweden)

    Jeng JS

    2011-08-01

    Full Text Available Ta-Chen Su1, Pao-Ling Torng2, Jiann-Shing Jeng3, Ming-Fong Chen1, Chiau-Suong Liau1,41Division of Cardiology, Department of Internal Medicine, 2Department of Obstetrics and Gynecology, 3Department of Neurology, National Taiwan University Hospital, National Taiwan University College of Medicine, 4Cardiovascular Center, Taipei Buddist Tzu-Chi Hospital, Hsin-Dian, Taipei, TaiwanBackground: Vegetarianism is associated with a lower risk of cardiovascular disease. However, studies of arterial function in vegetarians are limited.Methods: This study investigated arterial function in vegetarianism by comparing 49 healthy postmenopausal vegetarians with 41 age-matched omnivores. The arterial function of the common carotid artery was assessed by carotid duplex, while the pulse dynamics method was used to measure brachial artery distensibility (BAD, compliance (BAC, and resistance (BAR. Fasting blood levels of glucose, lipids, lipoprotein (a, high-sensitivity C-reactive protein, homocysteine, and vitamin B12 were also measured.Results: Vegetarians had significantly lower serum cholesterol, high-density and low-density lipoprotein, and glucose compared with omnivores. They also had lower vitamin B12 but higher homocysteine levels. Serum levels of lipoprotein (a and high-sensitivity C-reactive protein were no different between the two groups. There were no significant differences in carotid beta stiffness index, BAC, and BAD between the two groups even after adjustment for associated covariates. However, BAR was significantly lower in vegetarians than in omnivores. Multiple linear regression analysis revealed that age and pulse pressure were two important determinants of carotid beta stiffness index and BAD. Vegetarianism is not associated with better arterial elasticity.Conclusion: Apparently healthy postmenopausal vegetarians are not significantly better in terms of carotid beta stiffness index, BAC, and BAD, but have significantly decreased BAR than

  5. Internal carotid-cerebellar artery anastomosis. So-called persistent trigeminal artery variant

    Energy Technology Data Exchange (ETDEWEB)

    Tanohata, Kazunori; Maehara, Tadayuki; Noda, Masanobu; Katoh, Hiromi

    1987-09-01

    Five cases of internal carotid-cerebellar artery anastomosis are presented. These anomalous vessels are identical to the so-called persistent trigeminal artery variant (PTAV). In our cases, two superior cerebellar arteries (SCAs), two anterior inferior cerebellar arteries (AICAs) and one posterior inferior cerebellar artery (PICA) arose from the precavernous segment of the internal carotid artery. We discuss the embryolgical and neuroradiological aspects of this anomaly.

  6. Deep circumflex iliac artery as a free arterial graft for myocardial revascularization.

    Science.gov (United States)

    Yaginuma, G; Sakurai, M; Meguro, T; Ota, K; Abe, K

    2000-02-01

    When complete revascularization cannot be obtained with the internal thoracic artery and the other arterial grafts, the deep circumflex iliac artery (DCIA) may be an excellent alternative conduit. The deep circumflex iliac artery was used as a free graft for direct myocardial revascularization in 4 patients from January to July 1999. We describe our experience with this arterial conduit, review the anatomy of the artery, and present our harvesting technique. PMID:10735725

  7. El proceso tradicional de elaboración del pimentón de Murcia y sus posibles innovaciones

    Directory of Open Access Journals (Sweden)

    Escarabajal, David

    2006-12-01

    , lyophilization, mixing and coating, and modified atmosphere packaging.El proceso de elaboración tradicional del pimiento en la Región de Murcia está regulado oficialmente por la Denominación de Origen “Pimentón de Murcia”. Consta de operaciones unitarias de recolección, secado de la cáscara al Sol o con aire caliente, desrabado y desbinzado, trituración grosera, molturación, transmisión, granulado y mezclado, esterilizado, envasado y conservación refrigerada. Se describen detalles de los requerimientos técnicos de las operaciones. Posteriormente se revisan los atributos de calidad y riesgos del producto y del proceso, y mejoras tecnológicas recientemente propuestas para el proceso. Las innovaciones posibles incluyen diseño higiénico de proceso y producto, el uso de flujo de nitrógeno en el transporte y almacenamiento de la cáscara pretriturada, pretratamientos térmicos previos a la molienda, aplicación de altas presiones hidrostáticas o pulsos eléctricos de alta intensidad, irradiación, secado (deshidratación osmótica, liofilización, mezclado y aplicación de recubrimientos, o envasado en atmósfera modificada.

  8. Concepciones Alternativas de "Fotosintesis" en estudiantes Universitarios del curso basico de Biologia y posibles correcciones con el Modelo Educativo MODEF

    Science.gov (United States)

    De Jesus Roman, Sandra

    Concepciones Alternativas de Fotosíntesis en estudiantes Universitariosdel curso básico de Biología y posibles correcciones con el Modelo Educativo MODEF El modelo educativo para la enseñanza de Fotosíntesis (MODEF) se implantó para trabajar el problema de las concepciones alternativas (CA) en un curso de Biología General. Se evaluaron los resultados en cuanto al logro del aprendizaje significativo. La pregunta central de la investigación fue: ¿Cómo aporta el modelo educativo en la didáctica y comprensión del tema de fotosíntesis? Se efectuó una investigación acción con una fase cuantitativa y una cualitativa. Para la fase cuantitativa se elaboró una prueba para determinar las concepciones alternativas, se validó y se sometió a los estudiantes que participaron en el estudio antes y después de ofrecer la unidad de metabolismo celular. Los participantes eran estudiantes de primer año de la Universidad de Puerto Rico en Bayamón (UPRB). Se llevó a cabo un análisis de consistencia interna de la prueba mediante el método Alfa de Cronbach. Se analizaron las contestaciones a cada pregunta mediante la prueba de Ji cuadrado de contingencia, se efectuó la prueba de t y el coeficiente r de Pearson. La fase cualitativa incluyó la observación participativa de la investigadora- profesora, las reflexiones de los estudiantes y la información de las entrevistas semi-estructuradas que se realizaron a tres estudiantes del curso. El análisis se llevó a cabo mediante el Modelo de Wolcott. Se trabajaron diez CA de las cuales siete fueron corregidas mediante el Modelo MODEF. Las actividades más importantes para el proceso de aprendizaje incluyeron el trabajo de investigación o búsqueda de información para hacer una presentación digital, la elaboración de tablas, los mapas de conceptos, el uso de visuales o videos y las analogías para explicar conceptos o procesos. En conclusión: se recomienda el uso del Modelo MODEF para la discusión del tema de

  9. Livergraftvascularvariantwith 3 extra-hepatic arteries

    Institute of Scientific and Technical Information of China (English)

    Paulo N Martins

    2010-01-01

     Vascular anatomy of the liver is varied, and the"standard"anatomy is seen in 55%-80%of cases. It is very important that extrahepatic arteries are identiifed precisely at the time of graft procurement to avoid injuries that might compromise the liver function. In the present case the liver donor had the vascular anatomy of Michels type Ⅶ, e.g. a hepatic artery originating from the celiac trunk and going to the left lobe, an accessory left hepatic artery coming from the left gastric artery, and a replaced right hepatic artery coming from the superior mesenteric artery. This pattern of vascular supply is uncommon, representing less than 5%of cases. The replaced hepatic artery was reconstructed in the back-table with polypropylene suture 7.0 by connecting it to the stump of the splenic artery, and the celiac trunk of the graft was anastomosed to the recipient common hepatic artery.

  10. Presence of a median cubital arterial arch associated with high origin of radial artery

    Directory of Open Access Journals (Sweden)

    Shetty SD

    2010-09-01

    Full Text Available Occurrence of a median cubital arterial arch is very rare. We saw a superficially placed median cubital arterial arch associated with high level of origin of radial artery. The radial artery took origin from the brachial artery in the upper third of the arm and crossed median nerve and ulnar artery from medial to lateral side. The course and distribution of the vessels in the forearm was normal. In the cubital fossa, the radial and ulnar arteries were connected to each other by an arterial arch. The variations reported here are very useful for the radiologists as these variations can cause problems in invasive procedures.

  11. Valorización de la naturaleza y el territorio. Opciones teóricas-metodológicas para pensar otras territorialidades posibles

    OpenAIRE

    Silvia Valiente; Alejandro Schweitzer

    2016-01-01

    RESUMEN El objetivo de este artículo consiste en pensar otras territorialidades posibles a partir de considerar las distintas valorizaciones de la naturaleza y del territorio desde determinadas opciones teóricas. Estas sonla perspectiva decolonial, la ecología política y la ecología de los saberes, próximas entre sí en lo que respecta a su posicionamiento ético-político. Además comparten las críticas a la ciencia moderna en lo que refiere a la simplificación de la realidad, el conocimiento ab...

  12. Ensayo de toxicidad de un polímero natural para su posible aplicación como implante en animales

    OpenAIRE

    Luna, M. M.; Brusa, Mario C.; Stornelli, María Alejandra; Stornelli, María Cecilia

    2002-01-01

    El policarbonato (PC) es una extrusión de resina, polímero termoplástico duro, transparente en su forma natural, resistente al impacto, posee las propiedades de un biomaterial. Las aplicaciones más comunes del PC incluyen elementos de óptica, catéteres, dispositivos para biopsias e injertos óseos y envases de medicamentos y alimentos. El objetivo es establecer y comprobar la habilidad del PC para desarrollar una respuesta tisular apropiada como posible implante orgánico en un período de 180 d...

  13. De una cuestión preliminar a todo tratamiento posible de la psicosis: una lectura a través del caso Schreber /

    OpenAIRE

    Guilañá i Palanques, Elvira

    1997-01-01

    La presente tesis doctoral es un estudio del escrito de Jacques Lacan "De una cuestión preliminar a todo tratamiento posible de la psicosis" articulado a una lectura clínica del caso Schreber. Lacan sitúa en este escrito los puntos de dificultad que presenta la clínica de la psicosis y a la vez aporta nociones esenciales para un abordaje de la misma desde el psicoanálisis, todo ello a partir de una minuciosa lectura del caso que Freud consideró como paradigmático, el caso Schreber, y de las a...

  14. ¿Es posible reducir la mortalidad de la endocarditis infecciosa?: cambios a lo largo de un período de 15 años

    OpenAIRE

    Delgado Ortega, Mónica

    2004-01-01

    La endocarditis infecciosa (EI) es una enfermedad con tasas de mortalidad elevadas, a pesar de los avances recientes en los métodos de diagnóstico y tratamiento de la misma. OBJETIVOS 1,- Evaluar si se han producido cambios en la mortalidad de la EI en pacientes no adictos a drogas intravenosas en los últimos años. 2,- Estudiar los posibles factores relacionados con dichos cambios. 3,- Estudiar los cambios en mortalidad en los subgrupos definidos por edad, germen causal, tipo de EI y existenc...

  15. Actitud materna ante el embarazo y su posible relación en el proceso psicopedagógico del niño

    OpenAIRE

    lpland García, Jerónima; Valls Molins, Roser; Murtra Vilardebó, Rosa Ma.

    1985-01-01

    En el útero materno, el niño no es un ser encerrado, aislado y sin comunicación con el exterior. Por el contrario, el feto se encuentra en continuos contactos e intercambios con la madre. Esta premisa ha dado pie al siguiente estudio en el que se trata de conocer la actitud materna ante el embarazo y sus relaciones con los posibles problemas posteriores que puedan afectar el normal proceso de evolución e incidan, a su vez, en el desarrollo positivo de los aspectos psicopedagógicos

  16. Escenario posible del desempeño profesional en la enseñanza de una institucion de formación docente

    OpenAIRE

    Hidalgo M., Laura

    2007-01-01

    Resumen: Este artículo tiene como propósito central concebir el escenario posible del desempeño profesoral en la enseñanza en una institución de formación docente. Se toman como referentes las opiniones emitidas por los sujetos informantes de una investigación relacionada con el desempeño profesoral en los ámbitos de enseñanza e investigación que en la actualidad se realiza en el Instituto Pedagógico de Caracas, núcleo de la Universidad Pedagógica Experimental Libertador (UPEL), específicamen...

  17. Análisis de la frecuencia de uso, potencial didáctico y educativo de los videojuegos, y de su posible integración curricular

    OpenAIRE

    Salvador Gallego, Raúl

    2013-01-01

    El objetivo de nuestro estudio es realizar un análisis de la frecuencia de uso, el potencial didáctico y educativo de los videojuegos y de su posible integración curricular en el tercer ciclo de educación primaria. Para ello, hemos llevado a cabo un breve recorrido teórico acerca de diferentes aspectos relacionados con las nuevas tecnologías y los medios tanto en la educación formal e informal. Gran parte de esta fundamentación teórica se centra en los videojuegos, de los cuáles hemos estudia...

  18. Una solución de computación evolutiva para el TSP, su posible aplicación en las organizaciones

    OpenAIRE

    Minetti, Gabriela F.

    2000-01-01

    Esta tesis investiga posibles incrementos de la performance en las soluciones de ciertos problemas de optimización combinatorial NP-duros. Ejemplos de esto son los problemas de secuenciamiento puros. Se realiza una reseña de los métodos convencionales, comparándolos con los pertenecientes al campo de la Computación Evolutiva, conjuntamente con la propuesta de eventuales mejoras a estos últimos. Las aplicaciones prácticas discutidas en esta tesis se encuentran fuertemente relacionadas con la a...

  19. Estimación del tiempo medio de falla cuando sólo es posible observar un punto en el tiempo

    OpenAIRE

    Valencia Arango, Juan Pablo

    2010-01-01

    La estimación del tiempo medio de falla cuando sólo es posible observar un punto del tiempo, es un problema que no ha sido abordado aún según la revisión literaria realizada en el presente trabajo. El problema planteado se analiza desde el punto de vista clásico y bayesiano, ambas aproximaciones están enfocadas en las distribuciones exponenciales, Weibull y gamma. En el enfoque clásico se pretende hallar los estimadores de máxima verosimilitud (EMV) para las distribuciones objeto de estudio. ...

  20. Posible influencia de las traducciones de la poes??a ??rabe en la poes??a espa??ola del siglo XIX : (ideas, met??foras y locuciones)

    OpenAIRE

    Sadiq, Sabih

    1990-01-01

    En este trabajo se presentan y analizan con detenimiento m??ltiples casos de posibles influencias Arabes en la poes??a espa??ola del siglo XIX. En la primera parte del primer capitulo hemos estudiado las traducciones de la poes??a ??rabe al espa??ol en los siglos XVIII y XIX y en la segunda parte las traducciones de la poes??a ??rabe al lat??n, al franc??s, al ingles y al alem??n en los siglos XVII, XVIII y XIX. El segundo capitulo es un estudio del inter??s de los poetas espa??oles del siglo...

  1. Intra-arterial thrombolysis in basilar artery occlusions combination of intra-arterial thrombolytics and Gp IIb/IIIa inhibitors in basilar artery thrombosis

    Directory of Open Access Journals (Sweden)

    Gaikwad S

    2009-01-01

    Full Text Available Basilar artery thrombosis has high morbidity and mortality. Though intra-arterial thrombolytics have proven efficacy in the treatment of acute basilar artery occlusion, the elevation of procoagulant factors in the blood after intra-arterial thrombolysis could result in subsequent thrombus formation and clinical deterioration. Glycoprotein IIb/IIIa inhibitors have been shown to reduce this elevation in procoagulants. We present a pilot study of three cases of acute basilar artery occlusion treated with a combination of intra-arterial thrombolytics and Gp IIb/IIIa inhibitor with remarkable clinical recovery seen in all the patients.

  2. Toxicity Of The Essential Oil Of The Cytral Chemotype Of Lippia Alba (Mill. N. E. Brown Toxicidad del aceite esencial de Lippia alba (Mill. N. E. Brown quimiotipo citral

    Directory of Open Access Journals (Sweden)

    Jesús Olivero-Verbel

    2010-06-01

    Full Text Available The essential oil (EO of Lippia alba (Mill. N. E. Brown (Verbenaceae has been traditionally used to treat several diseases. In this study, the acute toxic effects of the citral chemotype of L. alba EO were evaluated in mice. Animals were treated via intraperitoneal receiving the L. alba essential oil at doses between 50 and 2500 mg/kg, and the control group received sesame oil (vehicle. The EO induced dose-dependent neurotoxic effects at doses greater than 1000 mg/kg, including decreased locomotion, motor skills and muscle strength, hypotonia, dyspnea, kyphosis and convulsions. The EO was lethal at a dose of 2500 mg/kg. Animals receiving 1000 mg/kg were euthanized at the end of the treatment period and their blood and livers were collected for analysis. Mice exposed to L. alba EO presented signifcantly greater plasma alanine aminotransferase (ALT activities than the control group. Liver histological changes included mild infammation, in particular, an increase in nuclear size. Compared to vehicle control group, changes in expression for selected genes were signifcant for FABP5, a fatty acid transport related gene. In summary, the intraperitoneal administration of L. alba EO (citral chemotype causes neurological damage in mice at doses equal or greater than 1500 mg/kg, whereas at 1000 mg/kg, it generates mild liver damage. Therefore, the systemic use of this EO raises concerns about its safety.El aceite esencial (AE de Lippia alba (Mill. NE Brown (Verbenaceae ha sido utilizado tradicionalmente para tratar varias enfermedades. En este estudio, los efectos tóxicos agudos del AE de Lippia alba quimiotipo citral fueron evaluados en ratones. Los animales fueron tratados por vía intraperitoneal recibiendo el AE en dosis entre 50 y 2500 mg/kg de peso, y el grupo control aceite de sésamo (vehículo. Dosis superiores a 1000 mg/kg del AE mostraron efectos neurotóxicos incluyendo disminución de la locomoción e hipotonía, disnea, cifosis y

  3. Efecto de la aplicación de aceite esencial de orégano mexicano (Lippia graveolens y tomillo (Thymus vulgaris en factores de calidad de rodajas de manzana (Malus domestica

    Directory of Open Access Journals (Sweden)

    Carlos Enrique Ochoa Velasco

    2012-12-01

    Full Text Available El objetivo de este estudio fue evaluar algunos factores de calidad de rodajas de manzana sumergidas en soluciones de aceite esencial (AE de orégano y tomillo. Rodajas de manzana fueron sumergidas en diferentes soluciones de AE: 100 ppm de AE de orégano (T1, 100 ppm de AE de tomillo (T2, 75:25 ppm de AE de orégano:tomillo (T3, 50:50 ppm de AE de orégano:tomillo (T4, 25:75 ppm de AE de orégano:tomillo (T5; 100 ppm de ácido ascórbico (T6 y agua destilada estéril (T7 que se utilizó como control. Las rodajas de manzana fueron empacadas y almacenadas a 5 ºC. Se evaluó el pH, sólidos solubles totales, acidez titulable, color, actividad de la polifenoloxidasa, compuestos fenólicos, actividad antioxidante, bacterias aerobias mesófilas, mohos y levaduras durante 9 días y atributos sensoriales. Después de 9 días de almacenamiento las rodajas de manzana sumergidas en los tratamientos T1 y T3 presentaron menor valor de pH y menos oscurecimiento. T1 y T5 mostraron el menor cambio neto de color, esto se vio reflejado en una baja actividad de la polifenoloxidasa. La aplicación de AE incrementó significativamente (p < 0,05 los compuestos fenólicos y la actividad antioxidante en los tratamientos T2, T3, T4, T5 y T6. Sin embargo, este incremento se redujo drásticamente después de 9 días de almacenamiento, obteniéndose una actividad antioxidante del 32,1 y 35,2 % (respecto al inicio en los tratamientos T6 y T4, respectivamente. Las bacterias aerobias mesófilas se inhibieron durante 3 días en las rodajas de manzana sumergidas en solución T1, mientras que después de 9 días las que presentaron la menor carga de bacterias fueron las rodajas de manzana sumergidas en T2 y T5. Los mohos y levaduras se inhibieron en los tratamientos T1, T2 y T5. Las rodajas de manzana con mayor aceptación sensorial por parte de los jueces fueron las de los tratamientos T4, T6 y T7 al inicio del almacenamiento y de los tratamientos T4, T5 y T6 después de 6 días.

  4. Persistent trigeminal artery arising from the arterial ring/fenestration of the cavernous segment of the internal carotid artery.

    Science.gov (United States)

    Uchino, Akira; Saito, Naoko; Kurita, Hiroki; Ishihara, Shoichiro

    2012-09-01

    A persistent trigeminal artery (PTA) is the most common carotid-vertebrobasilar anastomosis, usually arising from the cavernous or precavernous segment of the internal carotid artery (ICA) and connecting to the distal basilar artery. There are two types of PTA, lateral and medial. We present the first case of a lateral-type PTA arising from the large arterial ring/fenestration of the cavernous segment of the left ICA with findings from both magnetic resonance angiography and selective catheter angiography. PMID:22215430

  5. Paradigmas de enfermería (no posibles: La necesidad de una ruptura extraordinaria (No possible pradigms of nursing: The necessity of an extraordinary rupture

    Directory of Open Access Journals (Sweden)

    Xabier Irigibel-Uriz

    2010-12-01

    Full Text Available Aproximación foucaultiana a la discusión en torno a la naturaleza de la ciencia normal de enfermería y la posible extraordinariedad del paradigma de la transformación descrito por Kerouack y col. y asumido como anhelo del desarrollo de la enfermería. Ejercicio teórico donde los aportes conceptuales de Thomas Kuhn permiten ubicar la discusión en torno a los límites de los paradigmas (No Posibles, como espacio e instante desde donde podrían emerger los enfrentamientos que dieran origen a investigaciones y paradigmas extraordinarios.A Foucaultian approximation of the discussion in terms of the nature of the normal science of nursing and the possible extraordinariness of the Transformation paradigm described by Kerouack et al. and assumed as a desire for development of nursing. A theoretical exercise where Thomas Kuhn offers his concepts which allow for the discussion in terms of the limits of the (No Possible Paradigms, like space and instance from where tensions could emerge that give rise to extraordinary investigations and paradigms.

  6. Sobre Comunicología y Comunicometodología: primera guía de apuntes sobre horizontes de lo posible

    Directory of Open Access Journals (Sweden)

    Jesús Galindo Cáceres

    2008-12-01

    Full Text Available El texto se compone de cinco partes. En la primera se plantea la situación actual del campo académico de la comunicación como base histórica para la construcción de un nuevo proyecto de configuración científico y tecnológico. La segunda parte propone las coordenadas generales del proyecto. En la tercera se presentan las bases para la emergencia de una Comunicología posible, una ciencia de la comunicación inexistente hasta hoy como disciplina científica. En la cuarta se propone la parte complementaria de la Comunicología, a la Comunicometodología, como la dimensión práctica, aplicada, de la ciencia teórica en una dimensión de ingeniería constructiva de la comunicación. En la última se cierra el argumento de la ciencia y la ingeniería de la comunicación con una propuesta de horizontes de lo posible en la investigación de la comunicación, con la comunicación y en la comunicación.

  7. OPTIMIZACIÓN DEL RENDIMIENTO Y CONTENIDO DE TIMOL DE ACEITE ESENCIAL DE ORÉGANO SILVESTRE OBTENIDO POR ARRASTRE CON VAPOR OPTIMIZAÇÃO DO RENDIMENTO E CONTEÚDO DE TIMOL DO ÓLEO ESSENCIAL DO ORÉGANO SELVAGEM OBTIDO POR ARRASTRE À VAPOR OPTIMIZATION OF YIELD AND THYMOL CONTENT OF WILD OREGANO ESSENTIAL OIL OBTAINED BY STEAM DISTILLATION PROCESS

    OpenAIRE

    OSCAR ARANGO B.; FELIPE BOLAÑOS; OSCAR VILLOTA; ANDRÉS HURTADO B; INÉS TORO

    2012-01-01

    Se estudió el proceso de extracción por arrastre con vapor a escala de planta piloto del aceite esencial de orégano silvestre (Lippia origanoides H.B.K) de la región del Alto Patía (Colombia) utilizando la metodología de superficie de respuesta. Los factores estudiados fueron el tiempo de extracción (1-3 horas), la densidad del lecho (60-100 g/L) y la presión de extracción (1-3 psi). Las variables de respuesta fueron el rendimiento de extracción y el contenido de timol del aceite esencial. La...

  8. Persistent primitive trigeminal artery: a review.

    Science.gov (United States)

    Azab, Waleed; Delashaw, Johnny; Mohammed, Mohammed

    2012-01-01

    The trigeminal artery is the largest of the fetal carotid-basilar anastomotic arteries, and it persists for the longest embryonic period. The artery usually involutes after the development of the posterior communicating artery. The exact causes of persistence of this primitive vessel into adulthood are not completely clear. Angiographic and anatomical descriptions of the various persistent trigeminal artery (PTA) configurations and their relation to the remainder of the cerebrovascular tree and the other surrounding structures have been reported. Persistent trigeminal artery can be associated with many other vascular anomalies and disorders including aneurysms, arteriovenous malformations and carotid-cavernous fistulae. A thorough understanding of the anatomical and angiographic features of this persistent embryonic arterial channel is of utmost importance when making therapeutic decisions and embarking on surgical or endovascular intervention for any pertinent pathological condition. We review the embryology, angiographic features, microsurgical anatomy and associated vascular anomalies and disorders of the persistent trigeminal artery. PMID:22843453

  9. TECAB - Totally Endoscopic Coronary Artery Bypass

    Medline Plus

    Full Text Available ... as this. Come up. We have this 21 French cardio arterial cannula for arterial profusion. On this right side, this is the 25 French quick-draw Venus cardiac visions cannula as well, ...

  10. Transposition of the Greater Arteries (TGA)

    Science.gov (United States)

    ... Great Arteries Overview Transposition of the great arteries (TGA) is a rare but serious congenital (present at ... P. Goldberg, MD Causes of TGA Causes of TGA Congenital heart defects, such as transposition of the ...

  11. Renal artery stenosis due to neurofibromatosis

    OpenAIRE

    Malav Ishwar; Kothari S

    2009-01-01

    A 4-year-old boy with hypertension due to renal artery stenosis and neurofibromatosis type 1 is presented for its rarity. Renal artery stenosis due to neurofibromatosis is underrecognized and may masquerade Takayasu′s arteritis in Asian children.

  12. Anomalous origin of left vertebral artery

    Directory of Open Access Journals (Sweden)

    Veena Vidya Shankar

    2013-01-01

    Full Text Available Vertebral artery arises from the upper surface of the first part of subclavian artery on both sides. The morphological variations of the vertebral artery are of immense importance in surgery, angiography and all non-invasive procedures. During the routine dissection of a male cadaver aged about 65 years, we observed a variation in the branching of arch of aorta. The arch of aorta gave off four branches-brachiocephalic trunk, left common carotid artery (CCA, left vertebral artery (LVA and left subclavian artery. LVA was arising between left CCA and left subclavian artery.The knowledge of variations in the vertebral artery is of great clinical interest to the neurosurgeon and radiologist for diagnostic investigation and surgical procedures of the neck.

  13. Middle cerebral artery blood velocity during rowing

    DEFF Research Database (Denmark)

    Secher, Niels Henry; Pott, F; Knudsen, L.;

    1997-01-01

    original,arterial blood pressure,central venous pressure,cerebral blood flow, exercise, transcranial Doppler......original,arterial blood pressure,central venous pressure,cerebral blood flow, exercise, transcranial Doppler...

  14. Moyamoya disease associated with an anterior inferior cerebellar artery arising from a persistent trigeminal artery

    Energy Technology Data Exchange (ETDEWEB)

    Uchino, A.; Sawada, A.; Takase, Y.; Kudo, S. [Department of Radiology, Saga Medical School, 5-1-1, Nabeshima, Saga, 849-8501 (Japan); Koizumi, T. [Department of Neurosurgery, Saga Medical School, 5-1-1, Nabeshima, Saga, 849-8501 (Japan)

    2002-07-01

    The authors present a case of moyamoya disease associated with a persistent trigeminal artery from which the anterior inferior cerebellar artery arose. We reviewed previously reported cases of moyamoya disease associated with persistent carotid-basilar arterial anastomosis and investigated the embryology of this rare arterial variation. (orig.)

  15. Cardioembolic occlusion of the internal carotid artery presented with infarction in the posterior cerebral artery territory

    Institute of Scientific and Technical Information of China (English)

    XUE Su-fang; JIA Jian-ping

    2010-01-01

    @@ Posterior circulation stroke may rarely be associated with occlusive disease in the anterior circulation, such as in the context of a direct (fetal) origin of the posterior cerebral artery (PCA) from the internal carotid artery (ICA), or in the presence of a persistent trigeminal artery (PTA) or persistent hypoglossal artery (PHA).1,2

  16. Phrenic Nerve Injury during Coronary Artery Bypass

    OpenAIRE

    Guinn, Gene A.; Beall, Arthur C.; Lamki, Neela; Heibig, Jacques; Thornby, John

    1990-01-01

    After coronary artery bypass, some patients have diaphragmatic elevation, usually on the left side. To test our hypothesis that this phenomenon is due to phrenic nerve injury resulting from either 1) dissection of the proximal portion of the left internal mammary artery or 2) topical cooling of the heart with icy slush, we performed the following 2-part study. First, we reviewed our hospital records of 99 coronary artery bypass patients, 55 of whom had received left internal mammary artery gr...

  17. Vertebral artery injuries in cervical spine surgery

    OpenAIRE

    Schroeder, Gregory D.; Hsu, Wellington K.

    2013-01-01

    Background: Vertebral artery injuries during cervical spine surgery are rare, but potentially fatal. When performing cervical spine surgery, it is imperative that the surgeon has a systematic approach for avoiding, and if necessary, dealing with a vertebral artery injury. Methods: This is a review paper. Results: Upper posterior cervical spine surgeries put the vertebral artery at the highest risk, as opposed to anterior subaxial cervical spine procedures, which put the artery at the least ri...

  18. Coronary Artery Manifestations of Fibromuscular Dysplasia

    OpenAIRE

    Michelis, Katherine C.; Olin, Jeffrey W.; Kadian-Dodov, Daniella; D’Escamard, Valentina; Kovacic, Jason C.

    2014-01-01

    Fibromuscular dysplasia (FMD) involving the coronary arteries is an uncommon but important condition that can present as acute coronary syndrome, left ventricular dysfunction, or potentially sudden cardiac death. Although the classic angiographic “string of beads” that may be observed in renal artery FMD does not occur in coronary arteries, potential manifestations include spontaneous coronary artery dissection, distal tapering or long, smooth narrowing that may represent dissection, intramur...

  19. A single coronary artery with the right coronary artery originating from the left anterior descending artery detected by cardiac CT: A case report

    International Nuclear Information System (INIS)

    The right coronary artery arising from the left anterior descending artery is a rare coronary artery anomaly. In a 56 year old female, an anomaly with the right coronary artery, originating from the left anterior descending artery, coursing anteriorly to the pulmonary artery was detected by cardiac CT. Therefore, we hereby report a case of the single left coronary artery diagnosed by a 64 slice multidetector cardiac CT

  20. TECAB - Totally Endoscopic Coronary Artery Bypass

    Medline Plus

    Full Text Available ... And the bypass vessel is the so-called “internal mammary artery.” That’s an artery, as opposed to ... you very much. -- while I’m preparing the internal mammary artery for bypass. Good. All right. We ...

  1. Peripheral Arterial Disease (P.A.D.)

    Science.gov (United States)

    ... turn Javascript on. Peripheral Artery Disease (P.A.D.) What is P.A.D.? Arteries Clogged With Plaque Peripheral arterial disease (P. ... button on your keyboard.) Why Is P.A.D. Dangerous? Click for more information Blocked blood flow ...

  2. Multimodality imaging of coronary artery bypass grafts

    OpenAIRE

    Salm, Liesbeth Pauline

    2006-01-01

    This thesis describes multiple imaging modalities to examine coronary artery bypass grafts, and the research which was performed to further develop noninvasive imaging techniques to detect stenoses in native coronary arteries and bypass grafts in patients who experienced recurrent chest pain after coronary artery bypass grafting (CABG).

  3. Perfil epidemiológico de pacientes mayores de 70 años con diagnóstico reciente de hipertensión arterial / Epidemiological profile of patients over 70 years with newly diagnosed arterial hypertension

    OpenAIRE

    Bravo Pérez , María Cristina; Cuello López , Javier Mauricio

    2010-01-01

    Se obtuvo información en todo paciente mayor de 70 años con un diagnóstico de hipertensión arterial no superior a 2 años, acerca de datos demográficos, antecedentes patológicos, posibles eventos adversos, medicamentos, modo de diagnóstico, estadio de HTA, laboratorios y examen físico, incluyendo TA según JNCVII. Resultados Se recolectaron 31 pacientes con un promedio de edad de 78,7 años (rango 71 – 97), de los cuales 21 (67,7%) fueron de género femenino. El sitio de diagnóstico má...

  4. Anomalous external carotid artery-internal carotid artery anastomosis in two patients with proximal internal carotid arterial remnants

    International Nuclear Information System (INIS)

    Two angiographic instances of anomalous external carotid artery (ECA) and internal carotid artery (ICA) anastomosis are described, each occurring at the C2-3 level and bearing remnants of proximal ICA. The ICA remnant of one patient (identifiable immediately upon bifurcation of the common carotid artery) was hypoplastic, and that of the other patient was an occluded arterial stump. These features are not typical of non-bifurcating ICA. The occipital artery originated from an anomalous connection in one instance and from the main trunk of the ECA (just past the ECA-ICA connection) in the other

  5. Anomalous external carotid artery-internal carotid artery anastomosis in two patients with proximal internal carotid arterial remnants

    Energy Technology Data Exchange (ETDEWEB)

    Kim, Chang Hun [Dept. of Neurology, Stroke Center, Myongji Hospital, Goyang (Korea, Republic of); Cho, Young Dae; Kang, Hyun Seung; Kim, Jeong Eun; Han, Moon Hee [Seoul National University Hospital, Seoul National University College of Medicine, Seoul (Korea, Republic of); Jung, Seung Chai [Dept. of Radiology, Asan Medical Center, University of Ulsan College of Medicine, Seoul (Korea, Republic of); Ahn, Jun Hyong [Dept. of Neurosurgery, Hallym University Sacred Heart Hospital, Hallym University College of Medicine, Anyang (Korea, Republic of)

    2015-08-15

    Two angiographic instances of anomalous external carotid artery (ECA) and internal carotid artery (ICA) anastomosis are described, each occurring at the C2-3 level and bearing remnants of proximal ICA. The ICA remnant of one patient (identifiable immediately upon bifurcation of the common carotid artery) was hypoplastic, and that of the other patient was an occluded arterial stump. These features are not typical of non-bifurcating ICA. The occipital artery originated from an anomalous connection in one instance and from the main trunk of the ECA (just past the ECA-ICA connection) in the other.

  6. Bilateral posterior cerebral artery infarction

    OpenAIRE

    Ryan, Davinia; Murphy, Sinead M; Hennessey, Michael J

    2010-01-01

    We report the case of a 70-year-old man who presented with short-term memory impairment and a homonymous left inferior quadrantanopia secondary to simultaneous bilateral posterior cerebral artery (PCA) territory infarction. As in more than a quarter of cases of PCA

  7. Management of pulmonary arterial hypertension.

    LENUS (Irish Health Repository)

    Judge, Eoin P

    2013-02-01

    Pulmonary arterial hypertension (PAH) is a complex disease with a high mortality. Management of this disease is underpinned by supportive and general therapies delivered by multidisciplinary teams in specialist centres. In recent years, a number of PAH-specific therapies have improved patient outcomes. This article will discuss the management of PAH in the context of relevant recently published studies in this area.

  8. Giant superior mesenteric artery aneurysm

    OpenAIRE

    Temiz, Ahmet; Bostan, Mehmet; Şatıroğlu, Ömer; Çetin, Mustafa; Bozkurt, Engin

    2011-01-01

    Aneurysm of the superior mesenteric artery (SMA) is a rare condition and most of them are symptomatic. Gradu­ally increasing abdominal pain, intestinal ischemic symp­toms and rupture are the most common symptoms. We herein report a giant SMA aneurysm detected in a patient with complaint of abdominal discomfort.

  9. Síndrome Poliglandular Autoinmune Tipo II: Posible Asociación con HLA DRB1*-DQB1* Possible association of Type II Autoimmune Polyendrocrine Syndrome with HLA DRB1*-DQB1*

    Directory of Open Access Journals (Sweden)

    M.S. Mallea Gil

    2010-12-01

    Full Text Available Los síndromes poliendocrinos autoinmunes (APS asocian enfermedades endocrinas autoinmunes con otros desórdenes autoinmunes no endocrinos. El APS tipo II se caracteriza por compromiso primario suprarrenal, tiroideo y/o DM tipo I. Presentamos un paciente masculino de 46 años que fue internado por astenia, adinamia, hiporexia, severa disminución de peso, mareos y vómitos. Antecedente de obesidad y diabetes diagnosticada 3 años antes. Presentaba hipotensión arterial, hiperpigmentación de mucosas y pliegues, anemia, hiponatremia e hipoglucemias frecuentes a pesar de la disminución de la dosis de insulina. Se diagnosticó insuficiencia suprarrenal, concomitantemente con hipotiroidismo y diabetes tipo 1, todas de origen autoinmune, iniciándose reemplazo hormonal. Se encontró una posible asociación del HLA DRB1*-DQB1* en los estudios genéticos. Conclusiones: Nuestro paciente presenta el HLA DQB1*0302 descripto en el APSII, pero el HLA DRB1 *08 encontrado no está descripto en este síndrome ni en ningún otro desorden autoinmune. En pacientes con Diabetes tipo 1 que disminuyan el requerimiento insulínico, habría que descartar insuficiencia suprarrenal, un componente del APS II, como factor etiológico, a pesar de su baja prevalencia.Autoimmune polyendocrine syndromes (APS are the association of autoimmune endocrine diseases with other non-endocrine autoimmune disorders. Type II APS is defined by occurrence of Addison´s disease with thyroid autoimmune disease and/or type 1 diabetes mellitus. We present a 46-year-old male patient who was hospitalized because of asthenia, adynamia, hyporexia, severe loss of weight, dizziness and vomiting. Diabetes mellitus had been diagnosed 3 years earlier when he was obese. He presented arterial hypotension, anemia, darkening of the skin and oral mucosa, hyponatremia and frequent hypoglycemia although his insulin dose was decreased. Adrenal insufficiency was diagnosed together with hypothyroidism and type

  10. Deep plantar arteries of some mammals, with special reference to the plantar metatarsal arteries.

    OpenAIRE

    Horie,Masashi; Murakami,Takuro; Kikuta,Akio

    1988-01-01

    The plantar metatarsal arteries of some mammals were studied. In the dog, raccoon dog and cat, the second proximal perforating branch was fully developed and produced the plantar metatarsal arteries. These plantar metatarsal arteries ran on the plantar surfaces of the interosseous muscles along the metatarsal bones or intermetatarsal spaces, and gave rise to the digital arteries of the second to fifth toes. In the rabbit, a branch of the medial plantar artery ran transversely on the plantar s...

  11. The Right Gastroepiploic Artery Graft for Coronary Artery Bypass Grafting: A 30-Year Experience

    Science.gov (United States)

    Suma, Hisayoshi

    2016-01-01

    Throughout its 30-year history, the right gastroepiploic artery (GEA) has been useful for in situ grafts in coronary artery bypass grafting (CABG). The early graft patency rate is high, and the late patency rate has improved by using the skeletonized GEA graft and proper target selection, which involves having a target coronary artery with a tight >90% stenosis. Total arterial revascularization with the internal thoracic artery and GEA grafts is an option for achieving better outcomes from CABG procedures. PMID:27525230

  12. Endovascular rescue from arterial rupture and thrombosis during middle cerebral artery stenting

    International Nuclear Information System (INIS)

    Intravascular stents are being used with increasing frequency in interventional neuroradiology. Iatrogenic arterial rupture is an uncommon but serious complication. We present a case of arterial rupture and subarachnoid haemorrhage during middle cerebral artery stenting, treated by emergency additional, overlapping stenting and balloon tamponade of the dissected vessel. Thrombotic occlusion of the artery was managed by intra-arterial abciximab. Normal vessel patency was re-established within 20 min and the patient recovered with no neurological deficit. (orig.)

  13. An isolated left subclavian artery supplied by a collateral artery from the abdominal aorta

    Energy Technology Data Exchange (ETDEWEB)

    Ming, Zhu; Qian, Wang [Shanghai Jiaotong University School of Medicine, Department of Radiology, Shanghai Children' s Medical Center, Shanghai (China)

    2009-08-15

    An isolated left subclavian artery is a rare anomaly. We report a 9-month-old boy with an isolated left subclavian artery associated with tetralogy of Fallot and the right aortic arch. MRI and angiography show that the blood supply through the left subclavian artery was maintained by a large tortuous collateral artery from the abdominal aorta. This type of collateral artery structure is unique. (orig.)

  14. An isolated left subclavian artery supplied by a collateral artery from the abdominal aorta

    International Nuclear Information System (INIS)

    An isolated left subclavian artery is a rare anomaly. We report a 9-month-old boy with an isolated left subclavian artery associated with tetralogy of Fallot and the right aortic arch. MRI and angiography show that the blood supply through the left subclavian artery was maintained by a large tortuous collateral artery from the abdominal aorta. This type of collateral artery structure is unique. (orig.)

  15. Diabetes mellitus tipo 1: posible relación con la interrupción precoz de la lactancia materna

    Directory of Open Access Journals (Sweden)

    Dalila Teixeira Leal

    2012-12-01

    Full Text Available Introducción: La dieta es importante en la patogénesis de la diabetes tipo 1, los estudios indican una fuerte asociación entre la exposición temprana a la leche de vaca y la aparición de esta enfermedad. Objetivo: Verificar la existencia de la relación entre el destete precoz de la lactancia materna, la exposición a otras leches antes de seis meses de vida y el desarrollo de diabetes mellitus tipo 1. Materiales y Métodos: Investigación cuantitativa, a los padres respecto a los niños y adolescentes con diabetes tipo 1 que se registraron en el Departamento de Control de la Presión Arterial, Diabetes y Obesidad del Departamento Municipal de Salud de Juiz de Fora com una muestra total de 89 participantes. El instrumento utilizado para la recolección de datos fue un cuestionario estructurado aplicado a estos padres, los sujetos de la investigación fueron de ambos sexos y de todas las razas. Cabe señalar que el origen de esta investigación son los usuarios de los servicios de Diabetes Mellitus tipo 1, pero sólo los padres o tutores fueron entrevistados.Resultados: Se presentan datos sobre la caracterización de la muestra, la aparición o no de destete precoz de la lactancia materna, período de la lactancia materna exclusiva, si se ofreció dieta después del destete y las razones que llevaron a esta ocurrencia. Discusión y Conclusiones: La relación entre el destete precoz de la lactancia materna, con la consiguiente introducción de sustitutos de la leche materna, podría conllevar al desarrollo de diabetes mellitus tipo 1. (Rev Cuid 2012;3(3:293-9.Palabras clave: Diabetes Mellitus Tipo 1. Lactancia Materna. Enfermería. (Fuente: DeCS BIREME.

  16. Estudio de la utilidad del índice de cintura-cadera como predictor del riesgo de hipertensión arterial en niños y adolescentes

    OpenAIRE

    Emilio González-Jiménez; Miguel Ángel Montero-Alonso; Jacqueline Schmidt-Rio Valle

    2013-01-01

    Objetivos: Los objetivos de este estudio fueron verificar la existencia de una asociación significativa entre el estado nutricional de los alumnos y los valores del índice de cintura-cadera. En segundo lugar, comprobar una posible correlación entre los valores del índice de cintura-cadera y los niveles de presión arterial sistólica y diastólica. Muestra y metodología: Una población de 1001 adolescentes de entre 9 y 17 años de edad, pertenecientes a 18 centros educativos de las provincias de G...

  17. Determination of arterial wall shear stress

    Institute of Scientific and Technical Information of China (English)

    2001-01-01

    The arteries can remodel their structure and function to adapt themselves to the mechanical environment. In various factors that lead to vascular remodeling, the shear stress on the arterial wall induced by the blood flow is of great importance. However, there are many technique difficulties in measuring the wall shear stress directly at present. In this paper, through analyzing the pulsatile blood flow in arteries, a method has been proposed that can determine the wall shear stress quantitatively by measuring the velocity on the arterial axis, and that provides a necessary means to discuss the influence of arterial wall shear stress on vascular remodeling.

  18. Location of foot arteries using infrared images

    Science.gov (United States)

    Villasenor-Mora, Carlos; González-Vega, Arturo; Martín Osmany Falcón, Antonio; Benítez Ferro, Jesús Francisco Guillemo; Córdova Fraga, Teodoro

    2014-11-01

    In this work are presented the results of localization of foot arteries, in a young group of participants by using infrared thermal images, these are the dorsal, posterior tibial and anterior tibial arteries. No inclusion criteria were considered, that causes that no strong statistical data about the influence of the age in the arterial localization. It was achieved to solve the confusion when veins present a heat distribution similar to the artery and in the position of this. it contributes to enhance the rate of location of arteries. In general it is possible to say that the use of infrared thermal images is a good technique to find the foot arteries and can be applied in its characterization in a future. The procedure proposed is a non-invasive technique, and in certain fashion does not requires specialized personnel to achieve locate the arteries. It is portable, safe, and relatively economical.

  19. Arterial endothelial function measurement method and apparatus

    Energy Technology Data Exchange (ETDEWEB)

    Maltz, Jonathan S; Budinger, Thomas F

    2014-03-04

    A "relaxoscope" (100) detects the degree of arterial endothelial function. Impairment of arterial endothelial function is an early event in atherosclerosis and correlates with the major risk factors for cardiovascular disease. An artery (115), such as the brachial artery (BA) is measured for diameter before and after several minutes of either vasoconstriction or vasorelaxation. The change in arterial diameter is a measure of flow-mediated vasomodification (FMVM). The relaxoscope induces an artificial pulse (128) at a superficial radial artery (115) via a linear actuator (120). An ultrasonic Doppler stethoscope (130) detects this pulse 10-20 cm proximal to the point of pulse induction (125). The delay between pulse application and detection provides the pulse transit time (PTT). By measuring PTT before (160) and after arterial diameter change (170), FMVM may be measured based on the changes in PTT caused by changes in vessel caliber, smooth muscle tone and wall thickness.

  20. Posible embarazo ectópico intraprepucial en un perro. Reporte de un caso - (Possible ectopic pregnancy inside the foreskin of a dog. Report of a case

    Directory of Open Access Journals (Sweden)

    Denis Escobar-Barroso

    2009-01-01

    Full Text Available ResumenEste es el reporte de un posible embarazo ectópico casi a términodesarrollado dentro del prepucio de un perro. El fenómeno se presentóen la Finca “La Juanita”, municipio Cifuentes, provincia Villa Clara,Cuba. Se examinaron el perro y el feto, se realizó una investigaciónbibliográfica del tema y se ofrecen criterios al respecto.SummaryThis is the report of a case of a possible pregnancy of ectopic type,almost at the end of the normal term inside the foreskin of a dog.This case occurred in a place called ´¨La Juanita ¨´ .Cifuentes. Villa Clara. Cuba. It was examined the dog and the fetus, a bibliographical investigation was made about the topic, and we give our opinions about this phenomenon.

  1. Hyperdensity of the Basilar Artery on Postmortem CT: A Potential Indicator for Basilar Artery Thrombosis.

    Science.gov (United States)

    Garland, Jack; Tse, Rexson; Beh, Raymond J; Lyons, Timothy J; Cala, Allan D

    2016-06-01

    Basilar artery thrombosis constitutes 1% of all types of stroke, carries a mortality rate of up to 90%, and is one of the rarer causes of sudden death. It leads to brain stem ischemia and commonly presents with impaired consciousness, cranial nerve palsy, hemiplegia or quadriplegia, and sudden collapse. Clinically, the diagnosis of basilar artery thrombosis is made on clinical symptoms, along with a hyperdense basilar artery in antemortem computed tomography (CT) scan. To our knowledge, whether a hyperdense basilar artery indicates basilar artery thrombosis on postmortem CT scan is not documented in the literature. We present a case report of a 55-year-old man who on postmortem CT scan showed a hyperdense basilar artery and was subsequently confirmed to be a fatal basilar artery thrombosis. We suggest that a hyperdense basilar artery on postmortem CT should prompt the pathologist to consider basilar artery thrombosis. PMID:27049662

  2. Evaluation of renal artery stenosis using color Doppler sonography in young patients with multiple renal arteries

    Institute of Scientific and Technical Information of China (English)

    QIN Wei; ZHANG Xin; YANG Min; ZHONG Xu-hui; ZHAO Ming-hui

    2011-01-01

    Background Some individuals have multiple renal arteries. Severe stenosis in one of the arteries may cause refractory hypertension. The detection of stenosis within one of the multiple renal arteries usually required invasive procedures, such as computed tomographic angiography (CTA) and magnetic resonance angiography (MRA). This study reported the application of color Doppler sonography (CDS) in the detection of severe stenosis in one of the multiple arteries.Methods Patients with multiple renal arteries and one of the arteries with severe stenosis were retrospectively studied. Peak systolic velocities (PSV) of renal arteries and the intrarenal CDS patterns were collected and compared. The diagnosis was confirmed by digital subtraction angiography (DSA).Results Four children with multiple renal arteries and one of the arteries with stenosis were investigated. They were admitted due to refractory hypertension. CDS screening identified two renal arteries in one kidney of each patient with one of the two renal arteries having stenosis >70%. The PSV of the stenosed arteries were much higher, and the intrarenal CDS patterns supplied by the stenosed arteries changed into T-P patterns.Conclusion Non-invasive CDS technology may be a useful method to identify severe stenosis in one of multiple renal arteries in young patients.

  3. Descripción de posibles híbridos naturales entre Nothofagus pumilio y N. antarctica en Patagonia Sur (Argentina) Description of possible natural hybrids between Nothofagus pumilio and N. antarctica at South Patagonia (Argentina)

    OpenAIRE

    Sarah Lilian Burns; Juan Manuel Cellini; María Vanessa Lencinas; Guillermo José Martínez Pastur; Stella Maris Rivera

    2010-01-01

    El género Nothofagus comprende alrededor de 35 especies nativas del Hemisferio Sur. En la Patagonia se han citado numerosos ejemplos de híbridos naturales entre varias especies de Nothofagus. El objetivo del presente trabajo fue analizar y describir la evidencia de la existencia de posibles híbridos naturales entre Nothofagus pumilio y N. antarctica en Patagonia Sur, mediante el estudio de caracteres morfológicos foliares. Se trabajó con 20 posibles híbridos recolectados en una zona de transi...

  4. Mineralization (calcification) of coronary arteries.

    Science.gov (United States)

    Pawlikowski, M; Pfitzner, R; Wachowiak, J

    1994-01-01

    Mineralogical investigations of calcifications located in coronary vessels were performed on the material obtained from the endarterectomized arteries of 18 patients (15 M, 3 F, aged 36-65) during surgical revascularization procedures consisting in coronary artery bypass grafting. The samples were tested using scanning microscopy, X-ray diffractometry, infrared spectroscopy, atomic absorption spectroscopy, electron microprobe and neutron activation spectroscopy. The results of analyses were calculated with the use of computer programmes. Two types of mineralization were determined: 1. secret mineralization identified as higher than normal content of elements in biological tissues, not demonstrating any mineral grains, and 2. apparent mineralization, appearing micro- and macroscopically as grains composed mainly of hydroxyapatite containing admixture of carbonate groups, i.e. a mineral identical with apatite present in bones, or as calcification of other tissues (heart valves, lungs etc.). The authors suggest that the phenomenon of mineralization should be taken into consideration in the preventive treatment of coronary atheriosclerosis. PMID:7808039

  5. Bilateral posterior cerebral artery infarction.

    Science.gov (United States)

    Ryan, Davinia; Murphy, Sinead M; Hennessey, Michael J

    2010-01-01

    We report the case of a 70-year-old man who presented with short-term memory impairment and a homonymous left inferior quadrantanopia secondary to simultaneous bilateral posterior cerebral artery (PCA) territory infarction. As in more than a quarter of cases of PCA infarction, no aetiological cause was identified. Unlike the transient nature of symptoms in some cases following unilateral infarction, his deficits persisted on 2-month follow-up. PMID:22798298

  6. Coronary artery aneurysm: case report

    OpenAIRE

    Burkhart Harold M; Everett Jeffrey E

    2008-01-01

    Abstract Introduction Aneurysms of the left main coronary artery are rare with an incidence of 0.1% in large angiographic series. The majority are atherosclerotic in origin. Other causes include connective tissue disorders, trauma, vasculitis, congenital, mycotic and idiopathic. The primary complication is myocardial ischemia or infarction, with rupture being rare. Treatment options include anticoagulation, custom made covered stents, reconstruction, resection, and exclusion with bypass. Case...

  7. Infectious and coronary artery disease

    OpenAIRE

    Rezaee-Zavareh, Mohammad Saeid; Tohidi, Mohammad; Amin SABOURI; Ramezani-Binabaj, Mahdi; Sadeghi-Ghahrodi, Mohsen; Einollahi, Behzad

    2016-01-01

    BACKGROUND Atherosclerotic event is one of the most causes of death in the world. Coronary artery disease (CAD) is one manifestation of atherosclerosis. It is well-known that several risk factors, such as diabetes mellitus (DM), smoking, hypertension (HTN), have effects on it. It is proposed that infection can lead to atherosclerosis or even make its process faster. Here, we discuss about the effect of some of infectious agents on the atherosclerosis and CAD. METHODS In this study, first we d...

  8. Collagen turnover in arterial disease

    OpenAIRE

    Sluijter, J.P.G.

    2004-01-01

    Increased atherosclerotic plaque formation can lead to lumen reduction and finally to lumen obstruction. Percutaneous transluminal angioplasty (PTA) or balloon angioplasty (dilation) are approaches generally used to treat coronary, but also peripheral atherosclerotic disease. Their goal is to restore the blood supply. The repair process or restructuring of the artery after balloon angioplasty comprises two major features, neointimal formation and geometrical remodeling, and results in a decre...

  9. Digital subtraction angiography of a persistent trigeminal artery variant.

    Science.gov (United States)

    Temizöz, Osman; Genchellac, Hakan; Unlü, Ercüment; Cağli, Bekir; Ozdemir, Hüseyin; Demir, M Kemal

    2010-09-01

    Persistent trigeminal artery variants are described as cerebellar arteries that directly originate from the precavernous segment of the internal carotid artery. This has been observed in 0.18% of cerebral catheter angiograms. On the other hand, a persistent trigeminal artery variant feeding both the anterior inferior cerebellar artery and the posterior inferior cerebellar artery territory is very rare. We present this uncommon anomalous artery along with digital subtraction angiography findings and discuss its clinical significance in light of the literature. PMID:19821254

  10. Aberrant Ovarian Collateral Originating from External Iliac Artery During Uterine Artery Embolization

    International Nuclear Information System (INIS)

    We report a case of a 35-year-old woman who underwent uterine artery embolization (UAE) for symptomatic multiple uterine fibroids with collateral aberrant right ovarian artery that originated from the right external iliac artery. We believe that this is the first reported case in the literature of this collateral uterine flow by the right ovarian artery originated from the right external iliac artery. We briefly present the details of the case and review the literature on variations of ovarian artery origin that might be encountered during UAE.

  11. Superficial Ulnar Artery Associated with Anomalous Origin of the Common Interosseous and Ulnar Recurrent Arteries

    Science.gov (United States)

    Pamidi, Narendra; Nayak, Satheesha B; Jetti, Raghu; Thangarajan, Rajesh

    2016-01-01

    Occurrence of vascular variations in the upper limb is not uncommon and is well described in the medical literature. However, occurrence of superficial ulnar artery associated with unusual origin of the common interosseous and ulnar recurrent arteries is seldom reported in the literature. In the present case, we report the anomalous origin of common trunk of common interosseous, anterior and posterior ulnar recurrent arteries from the radial artery, in a male cadaver. Further, ulnar artery had presented superficial course. Knowledge of anomalous arterial pattern in the cubital fossa reported here is clinically important during the angiographic procedures and plastic surgeries. PMID:27437201

  12. Thyroid artery embolization for hyperthyroidism

    International Nuclear Information System (INIS)

    Objective: To evaluate the method and result of thyroid artery embolization as a new therapy for hyperthyroidism. Methods: Twenty-two patients with hyperthyroidism underwent selective thyroid artery embolization. Totally 52 thyroid arteries were embolized with microspheres. The indications to this therapy were following: hyperthyroid patients having indications to surgical and 131I therapy, clinically being difficult to complete the preparation for subtotal thyroidectomy and having high risk for surgical process because of their huge thyroid gland. Results: Serum level of thyroid hormones dropped significantly [median T3 from 8.8 nmol/L (4.3-43.0 nmol/L) to 4.0 nmol/L (1.1-9.2 nmol/L), median T4 from 206.4 nmol/L (77.4-748.2 nmol/L) to 144.5 nmol/L (25.8-279.9 nmol/L), P 131I treatment of hyperthyroidism. A long term follow-up study is still needed

  13. Morphology of atherosclerotic coronary arteries

    Science.gov (United States)

    Holme, Margaret N.; Schulz, Georg; Deyhle, Hans; Hieber, Simone Elke; Weitkamp, Timm; Beckmann, Felix; Herzen, Julia; Lobrinus, Johannes A.; Montecucco, Fabrizio; Mach, François; Zumbuehl, Andreas; Saxer, Till; Müller, Bert

    2012-10-01

    Atherosclerosis, the narrowing of vessel diameter and build-up of plaques in coronary arteries, leads to an increase in the shear stresses present, which can be used as a physics-based trigger for targeted drug delivery. In order to develop appropriate nanometer-size containers, one has to know the morphology of the critical stenoses with isotropic micrometer resolution. Micro computed tomography in absorption and phase contrast mode provides the necessary spatial resolution and contrast. The present communication describes the pros and cons of the conventional and synchrotron radiation-based approaches in the visualization of diseased human and murine arteries. Using registered datasets, it also demonstrates that multi-modal imaging, including established histology, is even more powerful. The tomography data were evaluated with respect to cross-section, vessel radius and maximal constriction. The average cross-section of the diseased human artery (2.31 mm2) was almost an order of magnitude larger than the murine one (0.27 mm2), whereas the minimal radius differs only by a factor of two (0.51 mm versus 0.24 mm). The maximal constriction, however, was much larger for the human specimen (85% versus 49%). We could also show that a plastic model used for recent experiments in targeted drug delivery represents a very similar morphology, which is, for example, characterized by a maximal constriction of 82%. The tomography data build a sound basis for flow simulations, which allows for conclusions on shear stress distributions in stenosed blood vessels.

  14. Assessment of conduit artery vasomotion using photoplethysmography

    Science.gov (United States)

    Kanders, Karlis; Grabovskis, Andris; Marcinkevics, Zbignevs; Aivars, Juris Imants

    2013-11-01

    Vasomotion is a spontaneous oscillation of vascular tone. The phenomenon has been observed in small arterioles and capillaries as well as in the large conduit arteries. The layer of smooth muscle cells that surrounds a blood vessel can spontaneously and periodically change its tension and thereby the arterial wall stiffness also changes. As the understanding of the phenomenon is still rather obscure, researchers would benefit from a low-cost and reliable investigation technique such as photoplethysmography (PPG). PPG is an optical blood pulsation measurement technique that can offer substantial information about the arterial stiffness. The aims of this pilot study were to evaluate the usefulness of the PPG technique in the research of vasomotion and to investigate vasomotion in the relatively large conduit arteries. Continuous 15 minute long measurements of posterior tibial artery wall stiffness were taken. Artery diameter, electrocardiogram, blood pressure and respiration were also simultaneously registered. Fast Fourier Transform power spectra were calculated to identify unique stiffness oscillations that did not correspond to fluctuations in the systemic parameters and thus would indicate vasomotion. We concluded that photoplethysmography is a convenient method for the research of the vasomotion in large arteries. Local stiffness parameter b/a is more accurate to use and easier to measure than the pulse wave velocity which describes stiffness of a segment of an artery. Conduit arteries might exhibit a low amplitude high frequency vasomotion ( 9 to 27 cycles per minute). Low frequency vasomotion is problematic to distinguish from the passive oscillations imposed by the arterial pressure.

  15. The clinical anatomy of the conal artery.

    Science.gov (United States)

    Loukas, Marios; Patel, Swetal; Cesmebasi, Alper; Muresian, Horia; Tubbs, R Shane; Spicer, Diane; Dabrowski, Marek

    2016-04-01

    Coronary arteries have been extensively described and recognized by gross anatomic studies. However, in the clinical setting, the recognition of the conal artery is essential during coronary angiography, as well as certain congenital heart conditions such as tetralogy of Fallot. In order to provide a complete anatomic and physiologic correlation of the actual incidence and distribution of the conal artery we examined 300 formalin fixed hearts with gross dissections and 300 coronary angiograms. The conal artery was identified in all hearts examined and five main patterns were recognized. In Type A (193, 32.1%), the conal artery arose as a branch of the right coronary artery (RCA); in Type B (96, 16%), the conal artery arose from the common coronary ostium with the RCA; in Type C (242, 40.3%), the conal artery took origin from the right aortic sinus as an independent artery; in Type D (48, 8%), multiple conal arteries were present and arose from the RCA as separate branches (32, 66.6%), from a common ostium with the RCA (8, 16.6%) or from the aortic sinus (8, 16.6%); in Type E (22, 3.6%), the conal artery arose as a branch of the right ventricular branch (17, 2.8%) or acute marginal artery (5, 0.8%). The relative prevalence of the five patterns as well as the morphology and the topography of the conal artery varied significantly with the degree of coronary luminal stenosis (as observed during angiography) and also with the degree of hypertrophied ventricular wall (as observed during gross dissections). Clin. Anat. 29:371-379, 2016. © 2014 Wiley Periodicals, Inc. PMID:25255889

  16. Los betabloqueadores como primera opción del tratamiento en la hipertensión no complicada ¿posible o no?

    OpenAIRE

    Alberto Morales Salinas

    2011-01-01

    Hasta la publicación de la guía del National Institute for Health and Clinical Excellence del 2006, existía consenso en las principales directrices de hipertensión arterial, en cuanto a que los beta-bloqueadores podían utilizarse como tratamiento de primera línea en la hipertensión arterial no complicada. Los cambios sugeridos consistían en considerar a los beta-bloqueadores como antihipertensivos de cuarta línea. Estas modificaciones estuvieron sustentadas fundamentalmente en los resultados ...

  17. Evaluación de la posible capacidad genotóxica de fármacos antihipertensivos: losartán e irbesartán

    OpenAIRE

    Arranz Gutiérrez, Paula

    2016-01-01

    [es] La hipertensión arterial (AHT), estado patológico definido como la elevación persistente de la presión arterial, es considerada uno de los principales problemas de salud pública. El tratamiento de la patología se realiza preferentemente con fármacos antihipertensivos. Los pacientes se encuentran sometidos a una exposición larga e ininterrumpida a estos fármacos. Los fármacos antihipertensivos se clasifican en función del mecanismo de acción por el que logran su efecto. Una de las clas...

  18. Typology of abdominal arteries, with special reference to inferior phrenic arteries and their esophageal branches.

    Science.gov (United States)

    Piao, D X; Ohtsuka, A; Murakami, T

    1998-08-01

    Origins and distribution of the human inferior phrenic arteries were studied by dissecting 68 Japanese adult cadavers. The inferior phrenic arteries were usually observed as paired (left and right) vessels. Their origins were summarized as follows: a) the aorta itself (85/138 cases, 61.6%), b) the ventro-visceral arteries (celiaco-mesenteric system of the aorta) including the celiac trunk (39/138 cases, 28.2%) and the left gastric artery (4/138 cases, 2.9%), and c) the latero-visceral arteries (adreno-renal system of the aorta) including the middle adrenal artery (4/138 cases, 2.9%) and the renal artery (6/138 cases, 4.3%). The left and right arteries occasionally originated in common trunk from the aorta, celiaco-mesenteric system or adreno-renal system (22/138 cases, 15.9%). A typological diagram explaining these variations is given. The inferior phrenic arteries, especially the left ones, sometimes issued visceral or esophageal branches. This fact indicates that the inferior phrenic arteries are homologous with the celiac trunk and mesenteric arteries. It is further discussed that the celiac trunk and mesenteric arteries are originally paired vessels, through introduction of our previous typological diagram of the abdominal arteries. PMID:9781269

  19. Imobilidade: uma ação essencial dos anestésicos inalatórios Inmovilidad: una acción esencial de los anestésicos inhalatorios Immobility: essential inhalational anesthetics action

    Directory of Open Access Journals (Sweden)

    Leonardo Teixeira Domingues Duarte

    2005-02-01

    ônios motores espinhais, mas também sobre neurônios e interneurônios nociceptivos do corno posterior da medula. A ação sobre os receptores específicos exerce efeito sobre a transmissão sináptica desses neurônios.JUSTIFICATIVA Y OBJETIVOS: La inmovilidad es una característica esencial de la anestesia general que debe ser buscada y mantenida durante todo el acto anestésico. La potencia anestésica, llamada Concentración Alveolar Mínima (CAM, es la expresión de la inhibición de los movimientos en respuesta a estímulos nociceptivos. Mientras, a pesar de la médula espinal ser reconocida como principal mediadora de la inmovilidad quirúrgica, los mecanismos celulares y subcelulares de la acción de los anestésicos inhalatorios para que produzcan inmovilidad no son, aún, totalmente conocidos. Considerando el grande avance en la pesquisa de los mecanismos de acción de los anestésicos inhalatorios y el resultado de grande cantidad de informaciones, esa revisión tiene como objetivo evaluar críticamente los estudios clínicos y experimentales realizados para identificación de los mecanismos y locales de acción de los anestésicos inhalatorios para producir inmovilidad como respuesta a estímulos nociceptivos. CONTENIDO: Los mecanismos de acción de los anestésicos inhalatorios en el SNC pueden ser divididos en tres niveles: macroscópico, microscópico y molecular. En el aspecto macroscópico, estudios comportamentales mostraron que la médula espinal es el principal local de la acción anestésica para promover inmovilidad en respuesta a la estimulación dolorosa. A nivel celular, la excitabilidad de los motoneuronios, neuronas nociceptivas y la transmisión sináptica están, todos, envueltos en la acción de los anestésicos inhalatorios. Bajo el punto de vista molecular, diversos receptores son afectados por los anestésicos, pero pocos deben mediar directamente la acción anestésica. Entre éstos, se destacan los receptores de glicina, NMDA de glutamato, 5

  20. Análisis de posibles errores en la base de datos Corine Land Cover (1990-2000 en la Comunidad de Madrid

    Directory of Open Access Journals (Sweden)

    Catalá Mateo, Rafael

    2008-06-01

    Full Text Available Knowledge of the land status through the use of mapping CORINE Land Cover is of great importance to study of interaction man-environment. The matrix of cross-tabulation is an essential tool for analyzing the spatial variation of land uses between two dates. This allows to obtain data from gross gains and losses, as well as net changes and exchanges. On the other hand, the above matrix makes possible to detect changes with incongruent explanation, which differ from what we call the normal dynamics of the study area. Through a simple methodology applied to the Community of Madrid, and using a the software raster Idrisi Andes, the sites affected by these incongruent changes are analysed. After a verification process through the use of orthophotos, aerial photographs, field work, etc, was found that 68% of incongruent changes had thematic errors in the allocation of classes cover in the mapping used.

    El conocimiento del estado de la ocupación del suelo, mediante la utilización de la cartografía CORINE Land Cover, es de vital importancia para el estudio del sistema dinámico de interacción hombre-medio. Los trabajos dirigidos al estudio de las transformaciones de las coberturas y usos del suelo tienen en la matriz de tabulación cruzada una herramienta esencial para analizar el cambio espacial entre dos fechas, obteniéndose datos de ganancias y pérdidas brutas, así como cambios e intercambios netos. No obstante, en la citada matriz también se detectan cambios de difícil explicación o incongruentes, que difieren de lo que podemos denominar la dinámica normal de la zona de estudio. Mediante una sencilla metodología aplicada a la Comunidad de Madrid, y la utilización del software raster Idrisi Andes, se localizan y analizan los polígonos afectados por los citados cambios “extraños”. Tras un proceso de verificación mediante el uso de ortofotos, fotografías aéreas, trabajo de campo, etc., se concluye que el 68% de los

  1. Segmented Coronary Artery Aneurysms and Kawasaki Disease

    Directory of Open Access Journals (Sweden)

    Hamid Reza Ghaemi

    2011-05-01

    Full Text Available Kawasaki disease (KD is an acute vasculitis syndrome of unknown etiology. It occurs in infants and young children,affecting mainly small and medium-sized arteries, particularly the coronary arteries. Generalized microvasculitis occurs in the first 10 days, and the inflammation persists in the walls of medium and small arteries, especially the coronary arteries, and changes to coronary artery aneurysms.We report the case of a 10-month-old girl referred to our center three months after the onset of disease due to the aneurysmsof the coronary arteries. During the acute phase of her illness, she received 2 gr/kg intravenous gamma globulin; and afterher referral to us, the patient was treated by antiaggregant doses of acetylsalicylic acid (ASA (5 mg/kg and Warfarin (1 mg/daily. At three months’ follow-up, the aneurysms still persisted in the echocardiogram.

  2. The symptomatology of megadolicho basilar artery.

    Science.gov (United States)

    Herpers, M; Lodder, J; Janevski, B; van der Lugt, P J

    1983-01-01

    Cranial nerve dysfunction, obstruction hydrocephalus, signs of brain stem dysfunction, and signs of a space-occupying lesion in the posterior fossa are presumed to be related to a megadolicho basilar artery, if present. Since there are no large series of patients with such vascular anomaly, a bias in relating symptoms with the presence of a megadolicho basilar artery is not excluded. We therefore studied retrospectively the incidence of megadolicho and dolicho basilar artery on cranial CT-scan of 3332 patients of 50 years and older. Patient records were reviewed for the above mentioned symptoms. 12 out of 22 patients with a megadolicho basilar artery and 2 patients out of 40 with a dolicho basilar artery had one or two of these symptoms. It is concluded that a megadolicho basilar artery can cause cranial nerve dysfunction, obstruction hydrocephalus, signs of brain stem dysfunction, and signs of a space-occupying lesion in the posterior fossa. PMID:6317247

  3. Permanent Cortical Blindness After Bronchial Artery Embolization

    Energy Technology Data Exchange (ETDEWEB)

    Doorn, Colette S. van, E-mail: cvandoorn@gmail.com; De Boo, Diederick W., E-mail: d.w.deboo@amc.uva.nl [Academic Medical Centre, Department of Radiology (Netherlands); Weersink, Els J. M., E-mail: e.j.m.weersink@amc.uva.nl [Academic Medical Centre, Department of Pulmonology (Netherlands); Delden, Otto M. van, E-mail: o.m.vandelden@amc.uva.nl; Reekers, Jim A., E-mail: j.a.reekers@amc.uva.nl; Lienden, Krijn P. van, E-mail: k.p.vanlienden@amc.uva.nl [Academic Medical Centre, Department of Radiology (Netherlands)

    2013-12-15

    A 35-year-old female with a known medical history of cystic fibrosis was admitted to our institution for massive hemoptysis. CTA depicted a hypertrophied bronchial artery to the right upper lobe and showed signs of recent bleeding at that location. Bronchial artery embolization (BAE) was performed with gelfoam slurry, because pronounced shunting to the pulmonary artery was present. Immediately after BAE, the patient developed bilateral cortical blindness. Control angiography showed an initially not opacified anastomosis between the embolized bronchial artery and the right subclavian artery, near to the origin of the right vertebral artery. Cessation of outflow in the bronchial circulation reversed the flow through the anastomosis and allowed for spill of embolization material into the posterior circulation. Unfortunately the cortical blindness presented was permanent.

  4. Retinal Artery Occlusion Treatment with Hyperbaric Oxygen

    Directory of Open Access Journals (Sweden)

    Harun Cakmak

    2016-01-01

    Full Text Available Retinal artery occlusion is one of the vision-threating emergency situations in ophthalmology. In this paper, a case of retinal artery occlusion is presented. Fifty seven year- old female patient presented with a sudden onset visual loss in her left eye. Best corrected visual acuity (BCVA levels were 1.0 and 0.7 in the right and left eye, respectiveley. Dilated fundus examination revealed no pathological finding in the right eye. Whereas calcified plaque was seen in upper arquat artery bifurcation in the left eye. Pallorness with retinal edema was seen in this arterial trace. Retinal artery occlusion was diagnosed and patient was referred for hyperbaric oxygen therapy. After a total of 20 sessions of hyperbaric oxygen therapy, the calcified plaques disappeared and her BCVA increased to 20/20. Hyperbaric oxygen treatment is vision-saving method which should be considered in retinal artery occlusion.

  5. Modeling of blood flow in arterial trees.

    Science.gov (United States)

    Anor, Tomer; Grinberg, Leopold; Baek, Hyoungsu; Madsen, Joseph R; Jayaraman, Mahesh V; Karniadakis, George E

    2010-01-01

    Advances in computational methods and medical imaging techniques have enabled accurate simulations of subject-specific blood flows at the level of individual blood cell and in complex arterial networks. While in the past, we were limited to simulations with one arterial bifurcation, the current state-of-the-art is simulations of arterial networks consisting of hundreds of arteries. In this paper, we review the advances in methods for vascular flow simulations in large arterial trees. We discuss alternative approaches and validity of various assumptions often made to simplify the modeling. To highlight the similarities and discrepancies of data computed with different models, computationally intensive three-dimensional (3D) and inexpensive one-dimensional (1D) flow simulations in very large arterial networks are employed. Finally, we discuss the possibilities, challenges, and limitations of the computational methods for predicting outcomes of therapeutic interventions for individual patients. PMID:20836052

  6. Permanent Cortical Blindness After Bronchial Artery Embolization

    International Nuclear Information System (INIS)

    A 35-year-old female with a known medical history of cystic fibrosis was admitted to our institution for massive hemoptysis. CTA depicted a hypertrophied bronchial artery to the right upper lobe and showed signs of recent bleeding at that location. Bronchial artery embolization (BAE) was performed with gelfoam slurry, because pronounced shunting to the pulmonary artery was present. Immediately after BAE, the patient developed bilateral cortical blindness. Control angiography showed an initially not opacified anastomosis between the embolized bronchial artery and the right subclavian artery, near to the origin of the right vertebral artery. Cessation of outflow in the bronchial circulation reversed the flow through the anastomosis and allowed for spill of embolization material into the posterior circulation. Unfortunately the cortical blindness presented was permanent

  7. Visceral periadventitial adipose tissue regulates arterial tone of mesenteric arteries.

    Science.gov (United States)

    Verlohren, Stefan; Dubrovska, Galyna; Tsang, Suk-Ying; Essin, Kirill; Luft, Friedrich C; Huang, Yu; Gollasch, Maik

    2004-09-01

    Periadventitial adipose tissue produces vasoactive substances that influence vascular contraction. Earlier studies addressed this issue in aorta, a vessel that does not contribute to peripheral vascular resistance. We tested the hypothesis that periadventitial adipose tissue modulates contraction of smaller arteries more relevant to blood pressure regulation. We studied mesenteric artery rings surrounded by periadventitial adipose tissue from adult male Sprague-Dawley rats. The contractile response to serotonin, phenylephrine, and endothelin I was markedly reduced in intact vessels compared with vessels without periadventitial fat. The contractile response to U46619 or depolarizing high K+-containing solutions (60 mmol/L) was similar in vessels with and without periadventitial fat. The K+ channel opener cromakalim induced relaxation of vessels precontracted by serotonin but not by U46619 or high K+-containing solutions (60 mmol/L), suggesting that K+ channels are involved. The intracellular membrane potential of smooth muscle cells was more hyperpolarized in intact vessels than in vessels without periadventitial fat. Both the anticontractile effect and membrane hyperpolarization of periadventitial fat were abolished by inhibition of delayed-rectifier K+ (K(v)) channels with 4-aminopyridine (2 mmol/L) or 3,4-diaminopyridine (1 mmol/L). Blocking other K+ channels with glibenclamide (3 micromol/L), apamin (1 micromol/L), iberiotoxin (100 nmol/L), tetraethylammonium ions (1 mmol/L), tetrapentylammonium ions (10 micromol/L), or Ba2+ (3 micromol/L) had no effect. Longitudinal removal of half the perivascular tissue reduced the anticontractile effect of fat by almost 50%, whereas removal of the endothelium had no effect. We suggest that visceral periadventitial adipose tissue controls mesenteric arterial tone by inducing vasorelaxation via K(v) channel activation in vascular smooth muscle cells. PMID:15302842

  8. Fatores de risco para doença arterial coronariana em idosos: análise por enfermeiros utilizando ferramenta computacional Factores de riesgo para enfermedad arterial coronaria en ancianos: análisis por enfermeras utilizando herramienta computacional Risk factors for coronary artery disease in the elderly: analysis by nurses using computational tool

    Directory of Open Access Journals (Sweden)

    Silvia Sidnéia da Silva

    2010-12-01

    riesgo para DAC en clientes ancianos es esencial y que la tecnología de la información puede apoyar en la tomada de decisiones estratégicas de promoción de salud.This study aimed to investigate the occurrence of risk factors for coronary artery disease among the elderly participants in a community campaign using a computational tool by nurses. In order to carry out the investigation, a database built during a particular event in the community has been used. The information concerns risk factors; anthropometric data; readings of glucose, cholesterol and blood pressure levels; occurrence of cardiac disease and others. The multidimensional structure was generated and handled by the Analysis Services tool. The elderly population represented 40.4% of the total, and one-third of that population showed altered levels of systemic blood pressure, 53.8% presented body mass index above 25 Kg/m², 40.3% reported hypertension and 20.3% diabetes mellitus. It can be inferred that it is essential to control risk factors for CAD among the elderly, and that information technology can be useful to make strategic decisions in health care promotion.

  9. Arterial function of carotid and brachial arteries in postmenopausal vegetarians

    OpenAIRE

    Su, Ta-Chen

    2011-01-01

    Ta-Chen Su1, Pao-Ling Torng2, Jiann-Shing Jeng3, Ming-Fong Chen1, Chiau-Suong Liau1,41Division of Cardiology, Department of Internal Medicine, 2Department of Obstetrics and Gynecology, 3Department of Neurology, National Taiwan University Hospital, National Taiwan University College of Medicine, 4Cardiovascular Center, Taipei Buddist Tzu-Chi Hospital, Hsin-Dian, Taipei, TaiwanBackground: Vegetarianism is associated with a lower risk of cardiovascular disease. However, studies of arterial funct...

  10. Low prevalence of significant carotid artery disease in Iranian patients undergoing elective coronary artery bypass

    Directory of Open Access Journals (Sweden)

    Karimi Fatemeh

    2007-01-01

    Full Text Available Abstract Background Coronary artery bypass grafting ranks as one of the most frequent operations worldwide. The presence of carotid artery stenosis may increase the stroke rate in the perioperative period. Routine preoperative noninvasive assessment of the carotid arteries are recommended in many institutions to reduce the stroke rate. Methods 271 consecutive patients undergoing coronary artery bypass grafting at Shaheed Madani hospital of Tabriz, Iran (age, 58.5 Y; 73.1% male underwent preoperative ultrasonography for assessment of carotid artery wall thickness. Results Plaque in right common, left common, right internal and left internal carotid arteries was detected in 4.8%, 7.4%, 43.2% and 42.1% of patients respectively. 5 patients (1.8% had significant ( Conclusion Consecutive Iranian patients undergoing elective coronary artery bypass surgery show a very low prevalence of significant carotid artery disease.

  11. Hepatopancreatic arterial ring: bilateral symmetric typology in human celiaco-mesenteric arterial system.

    Directory of Open Access Journals (Sweden)

    Kosaka M

    2002-10-01

    Full Text Available The celiac and mesenteric arterial system including the left gastric, splenic, common hepatic, and superior mesenteric arteries shows various types of origins, courses, ramifications and anastomoses. In order to explain the various expressions of this system, we have proposed a typological model, in which celiacomesenteric arteries develop as paired or bilaterally symmetrical primordial vessels originated from the anterior aspect of the aorta, and these vessels anastomose each other with longitudinal and horizontal pathways. Here, we report 3 unusual cases characterized by arterial rings, formed by the left gastric, left accessory hepatic, proper hepatic, anterior pancreaticoduodenal, and dorsal pancreatic arteries. The dorsal pancreatic and anterior pancreaticoduodenal arteries are located to the right and left of the embryonic pancreas developing in the dorsal mesentery, respectively. Such hepatopancreatic arterial rings simultaneously containing right and left elements can only be explained using our typological model, in which the concept of paired arteries or bilateral symmetry is introduced.

  12. Hepatopancreatic arterial ring: bilateral symmetric typology in human celiaco-mesenteric arterial system.

    Science.gov (United States)

    Kosaka, Motohiro; Horiuchi, Kanji; Nishida, Keiichiro; Taguchi, Takehito; Murakami, Takuro; Ohtsuka, Aiji

    2002-10-01

    The celiac and mesenteric arterial system including the left gastric, splenic, common hepatic, and superior mesenteric arteries shows various types of origins, courses, ramifications and anastomoses. In order to explain the various expressions of this system, we have proposed a typological model, in which celiacomesenteric arteries develop as paired or bilaterally symmetrical primordial vessels originated from the anterior aspect of the aorta, and these vessels anastomose each other with longitudinal and horizontal pathways. Here, we report 3 unusual cases characterized by arterial rings, formed by the left gastric, left accessory hepatic, proper hepatic, anterior pancreaticoduodenal, and dorsal pancreatic arteries. The dorsal pancreatic and anterior pancreaticoduodenal arteries are located to the right and left of the embryonic pancreas developing in the dorsal mesentery, respectively. Such hepatopancreatic arterial rings simultaneously containing right and left elements can only be explained using our typological model, in which the concept of paired arteries or bilateral symmetry is introduced. PMID:12530508

  13. Arteries of the hand in patients with scleroderma.

    Science.gov (United States)

    Janevski, B

    1986-01-01

    The arteriographic features of the arteries of the hand in 12 patients with biopsy proven scleroderma are discussed. The lesions were primarily observed in the proper digital arteries and less frequently in the ulnar artery, the superficial arch and the common digital arteries. In this series the radial artery and the deep palmar arch were never affected. PMID:3639805

  14. Sex differences in intracranial arterial bifurcations

    DEFF Research Database (Denmark)

    Lindekleiv, Haakon M; Valen-Sendstad, Kristian; Morgan, Michael K; Mardal, Kent-Andre; Faulder, Kenneth; Magnus, Jeanette H; Waterloo, Knut; Romner, Bertil; Ingebrigtsen, Tor

    2010-01-01

    Subarachnoid hemorrhage (SAH) is a serious condition, occurring more frequently in females than in males. SAH is mainly caused by rupture of an intracranial aneurysm, which is formed by localized dilation of the intracranial arterial vessel wall, usually at the apex of the arterial bifurcation. T...... female preponderance is usually explained by systemic factors (hormonal influences and intrinsic wall weakness); however, the uneven sex distribution of intracranial aneurysms suggests a possible physiologic factor-a local sex difference in the intracranial arteries....

  15. Shape optimization of the carotid artery bifurcation

    OpenAIRE

    Bressloff, N. W.; Forrester, A.I.J.; Banks, J.; Bhaskar, K.V.

    2004-01-01

    A parametric CAD model of the human carotid artery bifurcation is employed in an initial exploration of the response of shear stress to the variation of the angle of the internal carotid artery and the width of the sinus bulb. Design of experiment and response surface technologies are harnessed for the first time in such an application with the aim of developing a better understanding of the relationship between geometry (anatomy) and sites of arterial disease.

  16. Aberrant right hepatic artery; A case report

    International Nuclear Information System (INIS)

    We present a rare case of aberrant hepatic artery in a 40-year-old male with a history of chronic cholecystitis. During laparoscopic surgery, the artery found to pass anterior to the body the gallbladder and bifurcating anterior to the gallbladder body. The surgery was un eventful. We present this anomaly of the rare condition of aberrant right hepatic artery which should be in mind during laparoscopic cholecystectomy, because inadverant injury could lead to massive bleeding and increase co morbidities. (author)

  17. Adventitial Cystic Disease of the Popliteal Artery

    OpenAIRE

    Kawarai, Shun-ichi; Fukasawa, Manabu; Kawahara, Yu

    2012-01-01

    We describe a patient with adventitial cystic disease of the popliteal artery with intermittent claudication involving the right calf during exercise. Magnetic resonance imaging (MRI) and computed tomography (CT) revealed a cystic lesion that encircled and compressed the popliteal artery. Resection of the cyst involving a segment of the affected popliteal artery and interposing an autologous vein graft resolved the symptoms, and the postoperative course was uneventful. The cyst was histologic...

  18. Idiopathic Arterial Calcification of Infancy: Case Report

    OpenAIRE

    Attia, Tarek Hamed; Abd Alhamed, Mohamed Maisara; Selim, Mohamed Fouad; Haggag, Mohamed Salah; Fathalla, Diaa

    2015-01-01

    Idiopathic arterial calcification of infancy is a rare autosomal recessive disease, characterized by deposition of calcium along the internal elastic membrane of arteries, accompanied by fibrous thickening of the intima which causes luminal narrowing. Here we are reporting a case of idiopathic arterial calcification of infancy in a Saudi female newborn of non-consanguineous pregnant woman who had polyhydramnios. The newborn baby had severe respiratory distress, systemic hypertension and persi...

  19. Elastomeric PGS Scaffolds in Arterial Tissue Engineering

    OpenAIRE

    Lee, Kee-Won; Wang, Yadong

    2011-01-01

    Cardiovascular disease is one of the leading cause of mortality in the US and especially, coronary artery disease increases with an aging population and increasing obesity1. Currently, bypass surgery using autologous vessels, allografts, and synthetic grafts are known as a commonly used for arterial substitutes2. However, these grafts have limited applications when an inner diameter of arteries is less than 6 mm due to low availability, thrombotic complications, compliance mismatch, and late ...

  20. Epicardial ultrasound in coronary artery bypass surgery

    OpenAIRE

    Budde, R.P.J.

    2005-01-01

    Chapter 1 Coronary artery bypass surgery (CABG) is traditionally performed via a median sternotomy approach on cardiopulmonary bypass (arrested heart). Since the mid 1990ties, beating heart, minimally invasive and even totally endoscopic CABG are (re)explored. In all approaches to CABG, the surgeon may face several intraoperative difficulties: 1. Localization of the target coronary artery for bypass grafting. 2. Selection of the optimal anastomotic site on the target coronary artery. 3. Asses...

  1. Transcatheter Arterial Embolization of Cystic Artery Pseudoaneurysm in Acalculous Cholecystitis: A Case Report

    Energy Technology Data Exchange (ETDEWEB)

    Lee, Hyung Ook; Lee, Young Hwan [Dept. of Radiology, Daegu Catholic University College of Medicine, Daegu (Korea, Republic of); Kim, Young Hwan [Dept. of Diagnostic Radiology, Dongsan Medical Center, Keimyung University College of Medicine, Daegu (Korea, Republic of)

    2011-04-15

    A pseudoaneurysm of the cystic artery is a rare complication of cholecystitis, and is manifested by hemobilia or hematemesis. An early diagnosis is required for the successful treatment by cholecystectomy and ligation of the cystic artery. Herein, we report a case of a pseudoaneurysm of the cystic artery diagnosed by color Doppler ultrasonography and CT, and successfully treated by transcatheter arterial embolization with N-butyl cyanoacrylate in a high-risk surgical patient.

  2. Percutaneous coronary intervention versus coronary-artery bypass grafting for severe coronary artery disease

    OpenAIRE

    Serruys, Patrick; Morice, Marie-Claude; Kappetein, Arie Pieter; Colombo, Antonio; Holmes, David; Mack, Michael; Stahle, E.; Feldman, Ted; Brand, Marcel, van den; Bass, Eric; Dyck, Nic; Leadly, Katrin; Dawkins, Keith; Mohr, Friedrich

    2009-01-01

    textabstractBACKGROUND Percutaneous coronary intervention (PCI) involving drug-eluting stents is increasingly used to treat complex coronary artery disease, although coronary-artery bypass grafting (CABG) has been the treatment of choice historically. Our trial compared PCI and CABG for treating patients with previously untreated three-vessel or left main coronary artery disease (or both). METHODS We randomly assigned 1800 patients with three-vessel or left main coronary artery disease to und...

  3. Arterial Switch Operation in Patients with Intramural Coronary Artery: Early and Mid-term Results

    OpenAIRE

    Kim, HyungTae; Sung, Si Chan; Kim, Si-Ho; Chang, Yun Hee; Ahn, Hyo Yeong; Lee, Hyoung Doo

    2011-01-01

    Background The intramural coronary artery has been known as a risk factor for early death after an arterial switch operation (ASO). We reviewed the morphological characteristics and evaluated the early and mid-term results of ASO for patients with an intramural coronary artery. Materials and Methods From March 1994 to September 15th 2010, 158 patients underwent ASO at Dong-A and Pusan National University Hospitals for repair of transposition of the great arteries and double outlet right ventr...

  4. Prognostic value of changes in arterial stiffness in men with coronary artery disease

    OpenAIRE

    Iana A Orlova; Eradzh Yu Nuraliev; Yarovaya, Elena B; et al

    2010-01-01

    Iana A Orlova, Eradzh Yu Nuraliev, Elena B Yarovaya, Fail T AgeevOutpatient department, Russian Cardiology Research Center, Moscow, Russian Federation Background: Men with coronary artery disease (CAD) have been shown to have enhanced arterial stiffness. Arterial function may change over time according to treatment, but the prognostic value of these changes has not been investigated.Objectives: The aim of the present study was to assess whether an improvement in large artery rigidity in respo...

  5. Continuous blood gas monitoring in femoral arteries

    Science.gov (United States)

    Schlain, Les A.; Spar, Steven M.; Dellinger, Bart

    1995-05-01

    Continuous intra-arterial blood gas monitoring is a potentially valuable tool in the surgical and intensive care arenas. Patient oxygenation and acid base status can change rapidly and without warning. The ability to monitor pHa, PaCO2 and PaO2 in arterial blood will be a major medical advance for the anesthesiologist and intensivist. Intra-arterial blood gas sensors are typically placed in radial arteries. In certain patient populations accurate monitoring is not possible in radial arteries due to arterial environmental factors such as hypotension, vasoconstriction and atherosclerotic disease. These same factors can make radial cannulation difficult resulting in traumatic catheter insertion, thereby further compromising flow conditions. In situations where radial artery flow is expected to be compromised, selecting a large vessel for sensor placement is desirable. We report an initial feasibility study of our blood gas monitoring system using the femoral artery as the sensing site. Clinical results are presented as well as potential advantages and disadvantages associated with monitoring in the femoral artery.

  6. Arterial anatomy of the hallucal sesamoids.

    Science.gov (United States)

    Rath, Bjoern; Notermans, Hans-Peter; Frank, Daniel; Walpert, Juergen; Deschner, James; Luering, Christian M; Koeck, Franz X; Koebke, Juergen

    2009-09-01

    The aim of this study was to analyze the arterial supply of the sesamoid bones of the hallux. Twenty-two feet from adult cadavers were injected with epoxide resin or an acrylic polymer in methyl methacrylate (Acrifix) and subsequently processed by two slice plastination methods and the enzyme maceration technique. Afterwards, the arterial supply of the sesamoid bones was studied. The first plantar metatarsal artery provided a medial branch to the medial sesamoid bone. The main branch of the first plantar metatarsal artery continued its course distally along the lateral side of the lateral sesamoid and supplied it. The supplying arteries penetrated the sesamoid bones on the proximal, plantar, and distal sides. The analysis and cataloging of the microvascular anatomy of the sesamoids revealed the first plantar metatarsal artery as the main arterial source to the medial and lateral sesamoid bones. In addition, the first plantar metatarsal artery ran along the lateral plantar side of the lateral sesamoid bone, suggesting that this artery is at increased risk during soft-tissue procedures such as hallux valgus surgery. PMID:19644971

  7. Digital artery pseudoaneurysm in a patient with previous radial artery harvest

    OpenAIRE

    Plant, Mathew A; Panchapakesan, Vivek

    2011-01-01

    A post-traumatic pseudoaneurysm in the ulnar digital artery of the thumb in a patient with compromised vascularity due to a previous harvest of the ipsilateral radial artery is reported. To the authors’ knowledge, the present case is the first such description of a pseudoaneurysm in the digital artery of a patient with compromised collateral blood flow.

  8. Electronic database of arterial aneurysms

    Directory of Open Access Journals (Sweden)

    Fabiano Luiz Erzinger

    2014-12-01

    Full Text Available Background:The creation of an electronic database facilitates the storage of information, as well as streamlines the exchange of data, making easier the exchange of knowledge for future research.Objective:To construct an electronic database containing comprehensive and up-to-date clinical and surgical data on the most common arterial aneurysms, to help advance scientific research.Methods:The most important specialist textbooks and articles found in journals and on internet databases were reviewed in order to define the basic structure of the protocol. Data were computerized using the SINPE© system for integrated electronic protocols and tested in a pilot study.Results:The data entered onto the system was first used to create a Master protocol, organized into a structure of top-level directories covering a large proportion of the content on vascular diseases as follows: patient history; physical examination; supplementary tests and examinations; diagnosis; treatment; and clinical course. By selecting items from the Master protocol, Specific protocols were then created for the 22 arterial sites most often involved by aneurysms. The program provides a method for collection of data on patients including clinical characteristics (patient history and physical examination, supplementary tests and examinations, treatments received and follow-up care after treatment. Any information of interest on these patients that is contained in the protocol can then be used to query the database and select data for studies.Conclusions:It proved possible to construct a database of clinical and surgical data on the arterial aneurysms of greatest interest and, by adapting the data to specific software, the database was integrated into the SINPE© system, thereby providing a standardized method for collection of data on these patients and tools for retrieving this information in an organized manner for use in scientific studies.

  9. Valorización de la naturaleza y el territorio. Opciones teóricas-metodológicas para pensar otras territorialidades posibles

    Directory of Open Access Journals (Sweden)

    Silvia Valiente

    2016-06-01

    Full Text Available RESUMEN El objetivo de este artículo consiste en pensar otras territorialidades posibles a partir de considerar las distintas valorizaciones de la naturaleza y del territorio desde determinadas opciones teóricas. Estas sonla perspectiva decolonial, la ecología política y la ecología de los saberes, próximas entre sí en lo que respecta a su posicionamiento ético-político. Además comparten las críticas a la ciencia moderna en lo que refiere a la simplificación de la realidad, el conocimiento abstracto y normalizado. Toman distancia del pensamiento conservador, el que sólo se interesaba por preservar el orden y explicar las continuidades espacio-temporales. De igual modo toma distancia de la jerarquía de saberes o epistemicidios heredados de la modernidad. Proponen el conocimiento situado, el arte de la argumentación para la comprensión, el conocimiento en términos dialógicos, como opción metodológica. Desde estas aportaciones transdiciplinares actuales proponemos en este trabajo pensar las posibilidades que las mismas ofrecen para el reconocimiento y abordaje de otras territorialidades posibles, en el marco de las investigaciones en marcha vinculadas al modelo neoextractivo minero en Argentina. ABSTRACT The aim of this article is to think about other possible territorialities from considering the different appreciations of nature and the territory from certain theoretical options. These are the decolonial perspective, political ecology and ecology of knowledge, close to each other with respect to its ethical-political positioning. They also share criticism of modern science as regards simplification of reality, abstract and standardized knowledge. They take away the conservative thought, which was only interested in preserving order and explain the spatio-temporal continuities. Similarly it takes away from the hierarchy of knowledge or inherited epistemicidios of modernity. Propose situated knowledge, the art of argumentation

  10. Concentraciones de mercurio en leche de mujeres del noroeste de México: posible asociación a la dieta, tabaco y otros factores maternos

    Directory of Open Access Journals (Sweden)

    Ramón Gaxiola-Robles

    2013-06-01

    Full Text Available Objetivo: Determinar los niveles de mercurio total (THg en leche de mujeres del Noroeste de México y su posible asociación con factores maternos, la dieta y el tabaco. Método: El estudio se realizó en leches donadas por 108 mujeres de Baja California Sur. Se estratificaron en tres grupos de 36 donantes según el número de gesta. Se exploraron datos generales, hábito tabáquico, exposición al humo de tabaco ambiental, ingesta de mariscos y pescados. Los niveles de THg fueron cuantificados utilizando espectrofotometría de absorción atómica. La diferencia entres grupos se evaluó con estadística no paramétrica. Para explicar la posible asociación de las diferentes variables estudiadas y las concentraciones de THg en la leche, se realizaron modelos lineales generalizados. Resultados: Los niveles de THg fueron desde 1.23 µg/L en las primigestas (GI a 2,96µg/L para las mujeres con 3 o más gestas (GIII (p = 0,07. En el grupo de GI encontramos una concentración del THg 175% mayor (p = 0,02 entre las mujeres que no comen pescado, en comparación con las que si comen pescado. En el modelo lineal generalizado ajustado por las concentraciones de THg, las variables fueron: edad, número de embarazos, duración de la lactancia y exposición al tabaco (p < 0,05. Conclusiones: El consumo de pescado fue el factor que mejor ajustó los modelos en relación a los niveles de THg. El aporte de Hg por la dieta que se pudo asociar fue bajo, por lo que el consumo de pescado de las costas de Baja California Sur es seguro. El tabaco, incrementa las concentraciones de Hg en la leche materna, por lo que debe de limitarse su hábito durante el embarazo y la lactancia.

  11. Natural Mexican zeolite, potential material for hydrogen storage; Zeolita natural mexicana, material para su posible uso en el almacenamiento de hidrogeno

    Energy Technology Data Exchange (ETDEWEB)

    Iturbe-Garcia, J. L.; Lopez Munoz, B. E. [Instituto Nacional de Investigaciones Nucleares (Mexico)]. E-mail: joseluis.iturbe@inin.gob.mx

    2009-09-15

    This work presents a study of the use of natural Mexican zeolite as a possible alternative for hydrogen storage. This zeolite material is from the state of Sonora. Its particle size was decreased using a grinding treatment with a mechanical alloying system for 5 hours. The mechanical alloying equipment was built in our Institute (Instituto Nacional de Investigaciones Nucleares, ININ). Later, zeolite in powder form was characterized with x-ray diffraction and sweep electron microscopy. It was heated in a micro-reactor at 350 degrees Celsius, which was simultaneously emptied over 2 hours to eliminate humidity and possible gases trapped in its structure. Next, the temperature was reduce to 10 degrees Celsius and it was placed in contact with ultra-high pure hydrogen at a pressure of 10 bars for 10 minutes. The analysis of hydrogen trapped in the zeolite was conducted with gas chromatography. The results of the chromatograms indicate that the zeolite absorbed and liberated the hydrogen in completely different conditions than those reported in the literature. That is, with our experimental conditions at low pressure and temperature, the hydrogen was absorbed in this type of material. [Spanish] En este trabajo se presenta un estudio sobre el uso de una zeolita natural de origen mexicano como posible alternativa para almacenar hidrogeno. Este material zeolitico procede del Estado de Sonora, al cual se le disminuyo el tamano de particula mediante un tratamiento de molienda con un sistema de aleado mecanico durante 5 horas. El equipo de aleado mecanico se construyo en nuestro Instituto (Instituto Nacional de Investigaciones Nucleares, ININ). Posteriormente, la zeolita en forma de polvo se caracterizo por medio de difraccion de rayos X y microscopia electronica de barrido. Se sometio a calentamiento en un micro-reactor a 350 grados Celsios y al mismo tiempo haciendo vacio durante 2 horas, para eliminar humedad y posibles gases que estuvieran atrapados en su estructura. En

  12. Analysis of mining-medicinal waters regulation. Possible treatments Análisis sobre la normativa de las aguas minero-medicinales. Posibles tratamientos

    Directory of Open Access Journals (Sweden)

    Juan Antonio López Geta

    2006-12-01

    Full Text Available The mineral waters have been a part of our lives for many centuries, since they are believe to be beneficial and to have therapeutic properties for the human health. This fact makes a key issue to provide an analyses od the current legislation on this issue ( Royal Decree-Law 743/1928, April 25th, that aproves the statute on exploitation of spring of mineral and medicinal water; Mining Law of 1973 and its regulations, in order to determine the treatments that may be applied to these watersm meanly in the case of Legionella appearance, or as preventive maesure of it. The results of this analysis shows that there is no limitation or prohibition in the treatments to what they may be subjected, as long as their physico-chemical characteristic remains altered. Contamination by Legionella bacterium, is nowadays an issue of concern, and that is reason why Public Health Authority has established the quidelines to apply for spas in order to avoid or fight a possible outbreak.Las aguas minero-medicinales han estado y están presentes en nuestras vidas desde épocas remotas hasta la actualidad, ya que a las mismas se le atribuyen propiedades terapéuticas beneficiosas para el organismo humano. Este hecho, hace que sea trascendente un análisis de la legislación vigente en esta materia (El Real Decreto-Ley de 743/1928, de 25 de abril, por el que se aprueba el Estatuto sobre la explotación de manantiales de aguas minero-medicinales; Ley de Minas de 1973 y el Reglamento que la desarrolla, para determinar los posibles tratamientos a que pueden ser sometidas estas aguas, especialmente en el caso de aparición de la Legionella, o como medida preventiva de la misma. De las diferentes normativas, se deduce que no existe limitación o prohibición alguna en los tratamientos a los que pueden estar sujetas, siempre y cuando no se alteren las características del agua y sus efectos. La Legionella, constituye un nuestros días un motivo de preocupación, por la que

  13. Intracranial Large Artery Occlusive Disease

    Institute of Scientific and Technical Information of China (English)

    Wong KS; Li H; Kay R

    2000-01-01

    @@Intracranial large artery stenosis is the most commonly found vascular lesion in stroke patient of Chinese, Hispanic and African ancestry. There .have been few studies on the epidemiology, pathophysiology, treatment and prognosis of this important disease. Recent advances in technology provide safe and reliable investigation for studying large number of patients. Transcranial Doppler is an easily accessible, cheap and reliable method to diagnose intracranial stenosis. It is suitable for screening for and monitoring the progress of intracranial stenosis. Magnetic resonance angiography and CT angiography provide the morphology of lumenal stenosis but are less accessible.

  14. Coronary Artery Bypass Graft Surgery (Beyond the Basics)

    Science.gov (United States)

    ... for people with coronary heart disease is called "percutaneous coronary intervention" (PCI), or "stenting." This involves using a flexible ... artery disease: Coronary artery bypass graft surgery versus percutaneous coronary intervention Coronary artery bypass grafting in patients with cerebrovascular ...

  15. Genetic determinants of arterial stiffness: Results from the Rotterdam Study

    NARCIS (Netherlands)

    M.P.S. Sie (Mark)

    2007-01-01

    textabstractArterial stiffness increases with age. It is also associated with various diseases, such as diabetes mellitus and hypertension. Recently, arterial stiffness has also been found to independently predict cardiovascular disease. The pathogenesis of arterial stiffness, however, has n

  16. Reimplantation of left coronary artery from pulmonary artery in a 65-year-old.

    Science.gov (United States)

    Mitchell, Julia; Lemaire, Anaïs; Henaine, Roland; Metton, Olivier; Ninet, Jean

    2016-01-01

    Anomalous left coronary artery to the pulmonary artery is a rare pathology with a mortality rate of 90% in the first year of life, directly related to left ventricular function and coronary perfusion, although several adult cases have been reported. Surgical correction consists of ligation of the anomalous left coronary artery associated with coronary artery bypass grafting. We describe the exceptional case of a 65-year-old woman who underwent reimplantation of the left coronary artery in the anatomical position without bridging. PMID:24948780

  17. Persistent primitive trigeminal artery associated with monocular blindness and external carotid-vertebral artery anastomosis

    Science.gov (United States)

    Yin, Suo; Zhang, Hong T.; Zhang, Dao P.; Zhang, Shu L.

    2015-01-01

    In this paper, we present 2 rare cases of persistent embryonic anastomoses. In one case, the patient presented with persistent trigeminal artery along with multiple foci of cerebral infarction as well as central retinal artery thrombosis. In the other case, the patient had direct anastomosis of the vertebral artery with ipsilateral external carotid artery as well as pontine infarction, aneurysm, and unilateral hypoplasia of the vertebral artery. The findings in these cases may shed light on the clinical presentation of such persistent anastomoses and aid their detection in clinical settings. PMID:25935186

  18. Persistent primitive trigeminal artery associated with monocular blindness and external carotid-vertebral artery anastomosis.

    Science.gov (United States)

    Yin, Suo; Zhang, Hong T; Zhang, Dao P; Zhang, Shu L

    2015-05-01

    In this paper, we present 2 rare cases of persistent embryonic anastomoses. In one case, the patient presented with persistent trigeminal artery along with multiple foci of cerebral infarction as well as central retinal artery thrombosis. In the other case, the patient had direct anastomosis of the vertebral artery with ipsilateral external carotid artery as well as pontine infarction, aneurysm, and unilateral hypoplasia of the vertebral artery. The findings in these cases may shed light on the clinical presentation of such persistent anastomoses and aid their detection in clinical settings. PMID:25935186

  19. Anomalous Right Coronary Artery Originating from the Left Main Coronary Artery

    Directory of Open Access Journals (Sweden)

    Y Mahmmody

    2009-12-01

    Full Text Available A 50–year–old woman presented to our center with effort angina. Angiography showed normal left main coronary artery, normal left circumflex (LCX artery and critical discrete lesion (99% stenosis in mid part of left anterior descending (LAD artery with good distal flow. However, the right coronary artery (RCA originated from the left main coronary artery. There was no evidence of external compression of the proximal portion of the RCA during systole or diastole. Consult with cardiac surgeon was done but the patient refused from the operation.

  20. Abnormal origin of the ophthalmic artery from the anterior cerebral artery: Neuroradiological and intraoperative findings

    International Nuclear Information System (INIS)

    A 7-year old male child with an abnormal ophthalmic artery arising from the A1 segment of the anterior cerebral artery is described. The patient suffered growth inhibition which was thought to be caused by a craniobasal cystic lesion affecting the hypothalamus. Preoperative angiograms revealed no vascular abnormalities. The right ophthalmic artery, however, could not be identified. During resection of a large arachnoid cyst the ophthalmic artery was found to arise from the A1 segment of the anterior cerebral artery. To the best of our knowledge, this exact anomaly has not previously been reported. The clinical, neuroradiological and intraoperative findings are presented. (orig.)

  1. Brachytherapy in coronary artery disease

    Energy Technology Data Exchange (ETDEWEB)

    Song, Ho Chun [Chonnam National University Medicine School, Gwangju (Korea, Republic of)

    2006-04-15

    Coronary artery disease is a leading cause of morbidity and mortality across the world. Percutaneous coronary intervention has become the major technique of revascularization. However, restenosis remains a major limitation of this procedure. Recently the need for repeat intervention due to restenosis, the most vexing long-term failure of percutaneous coronary intervention, has been significantly reduced owing to the introduction to two major advances, intracoronary brachytherapy and the drug-eluting stents, intracoronary brachytherapy has been employed in recent years to prevent restenosis lesions with effective results, principally in in-stent restenosis. Restenosis is generally considered as an excessive form of normal wound healing divided up in processes: elastic recoil, neointimal hyperplasia, and negative vascular remodeling. Restenosis has previously been regarded as a proliferative process in which neointimal thickening, mediated by a cascade of inflammatory mediators and other factors, is the key factor. Ionizing radiation has been shown to decrease the proliferative response to injury in animal models of restenosis. Subsequently, several randomized, double-blind trials have demonstrated that intracoronary brachytherapy can reduce the rates to both angiographic restenosis and clinical event rates in patients undergoing percutaneous coronary intervention for in-stent restenosis. Some problems, such as late thrombosis and edge restenosis, have been identified as limiting factors of this technique. Brachytherapy is a promising method of preventing and treating coronary artery restenosis.

  2. Drugs induced pulmonary arterial hypertension.

    Science.gov (United States)

    Seferian, Andrei; Chaumais, Marie-Camille; Savale, Laurent; Günther, Sven; Tubert-Bitter, Pascale; Humbert, Marc; Montani, David

    2013-09-01

    Pulmonary arterial hypertension (PAH) is a rare disorder characterized by progressive obliteration of the pulmonary microvasculature, resulting in elevated pulmonary vascular resistance and premature death. According to the current classification, PAH can be associated with exposure to certain drugs or toxins, particularly appetite suppressant drugs, such as aminorex, fenfluramine derivatives and benfluorex. These drugs have been confirmed to be risk factors for PAH and were withdrawn from the market. The supposed mechanism is an increase in serotonin levels, which was demonstrated to act as a growth factor for the pulmonary arterial smooth muscle cells. Amphetamines, phentermine and mazindol were less frequently used but are also considered as possible risk factors for PAH. Dasatinib, a dual Src/Abl kinase inhibitor, used in the treatment of chronic myelogenous leukaemia was associated with cases of severe PAH, in part reversible after its withdrawal. Recently several studies raised the potential endothelial dysfunction that could be induced by interferon, and few cases of PAH have been reported with interferon therapy. Other possible risk factors for PAH include: nasal decongestants, like phenylpropanolamine, dietary supplement - L-Tryptophan, selective serotonin reuptake inhibitors, pergolide and other drugs that could act on 5HT2B receptors. Interestingly, PAH remains a rare complication of these drugs, suggesting possible individual susceptibility and further studies are needed to identify patients at risk of drugs induced PAH. PMID:23972547

  3. An aberrant right lateral branch from right internal thoracic artery

    OpenAIRE

    Salve VM; Ratnaprabha C

    2010-01-01

    The internal thoracic artery is the largest artery of the thoracic wall. The internal thoracic artery is often mobilized for coronary artery bypass grafting. During routine dissection (MBBS Batch 2009-2010) of a middle aged male cadaver at Dr. Pinnamaneni Siddhartha Institute of Medical Sciences & Research Foundation, Gannavaram, (INDIA); an aberrant right lateral branch from right internal thoracic artery was found. It arose from right internal thoracic artery behind right first rib. It ran ...

  4. El paradigma holográfico y la interconexión mentecerebro- universo: ¿un posible diálogo con Oriente?

    Directory of Open Access Journals (Sweden)

    Ana Cecilia Vallejo Clavijo

    2009-01-01

    Full Text Available El presente artículo tiene como finalidad realizar un análisis en torno al problema de la interconexión mente-cerebro-naturaleza, a partir de la teoría del orden implicado, propuesta por D. Bohm. En él se destaca el modelo del holograma como un ejemplo de este orden implicado. Si se parte de que la noción de holomovimiento proviene de la imagen del holograma en movimiento que se pliega y se despliega, se encuentra que: tanto el universo como nosotros somos parte de él, y la conciencia misma es un rasgo del holomovimiento en la esfera de lo no manifiesto. En este análisis se desarrollan, además, algunas categorías de la física como espacio tridimensional, multidimensional, vacío, relatividad, etc; para ser relacionadas desde el punto de vista fenomenológico de la conciencia. La pretensión de este trabajo investigativo se orienta a establecer un posible diálogo sobre estos temas, con algunos místicos y filósofos que representan la tradición espiritual de Oriente.

  5. Ecoanálisis como puerta de entrada a la decodificación de lo cotidiano: hacia una educación posible

    Directory of Open Access Journals (Sweden)

    María Celina Chavarría González

    2006-01-01

    Full Text Available Se destacan las ventajas del ecoanálisis como andamiaje para decodificar los valores que inconscientemente plasmamos en las relaciones y ambientes que disponemos para la formación de la niñez en la educación preescolar, potenciando diálogos concretos sobre la dimensión de lo posible. Orientamos esta decodificación hacia el esclarecimiento crítico de realidades encubiertas y el empoderamiento hacia su transformación. El ecoanálisis promueve acercamientos progresivos y compartidos hacia cosmovisiones más acordes con las necesidades de la época actual, potenciando la decodificación de lo cotidiano y transformaciones curriculares desde comunidades de aprendizaje transdisciplinarias. Se hace referencia a tres instancias de investigación-acción donde el ecoanálisis dio como resultado cambios significativos en el quehacer cotidiano y en las actuaciones de la niñez, reforzando un enfoque holista y de derechos. Se esbozan elementos para poner este enfoque en práctica y se hace hincapié en que sólo cuando los valores se plasman en lo cotidiano, en las vivencias del día a día, cuando integran cuerpo-emociones-mente, es que se logran interiorizar.

  6. Hypertensive encephalopathy complicating transplant renal artery stenosis.

    OpenAIRE

    McGonigle, R J; Bewick, M.; Trafford, J. A.; Parsons, V

    1984-01-01

    A 26-year-old female diabetic patient developed hypertensive encephalopathy with gross neurological abnormalities complicating renal artery stenosis of her transplant kidney. The elevated blood pressure was unresponsive to medical treatment. Surgical correction of the stenoses in the renal artery cured the hypertension and renal failure and led to the patient's complete recovery.

  7. Megadolicho vascular malformation of the intracranial arteries.

    Science.gov (United States)

    Lodder, J; Janevski, B; van der Lugt, P J

    1981-01-01

    A patient is presented suffering a hemiparesis. Megadolicho-vascular malformation of the intracranial part of the internal carotid arteries and some of its branches and of the basilar artery was suggested by CT and confirmed by angiography. The value of CT compared with angiography in relation to intracranial megadolicho vascular malformations is discussed. PMID:6273040

  8. Totally thrombosed giant anterior communicating artery aneurysm

    Directory of Open Access Journals (Sweden)

    V R Roopesh Kumar

    2015-01-01

    Full Text Available Giant anterior communicating artery aneurysmsarerare. Apatient presented with visual dysfunction, gait ataxia and urinary incontinence. MRI showed a giant suprasellar mass.At surgery, the lesion was identified as being an aneurysm arising from the anterior communicating artery.The difficulty in preoperative diagnosis and relevant literature are reviewed.

  9. Minimal Invasive Coronary Artery Fistula Ligation

    OpenAIRE

    Mitropoulos, Fotios A.; Kanakis, Meletios A.; Chatzis, Andrew; Contrafouris, Constantinos; Sofianidou, Ioanna A.; Lioulias, Achilleas G.

    2014-01-01

    A coronary artery fistula was surgically ligated in a 38-year-old woman via a left anterior mini-thoracotomy without the use of cardiopulmonary bypass. In selected cases, this surgical approach can provide an excellent surgical exposure for coronary artery fistula ligation. It also offers an excellent cosmetic result and shorter hospital stay.

  10. Goldenhar Syndrome Associated with Extensive Arterial Malformations

    Directory of Open Access Journals (Sweden)

    Renee Frances Modica

    2015-01-01

    Full Text Available Goldenhar Syndrome is characterized by craniofacial, ocular and vertebral defects secondary to abnormal development of the 1st and 2nd branchial arches and vertebrae. Other findings include cardiac and vascular abnormalities. Though these associations are known, the specific anomalies are not well defined. We present a 7-month-old infant with intermittent respiratory distress that did not improve with respiratory interventions. Echocardiogram suggested a double aortic arch. Cardiac CT angiogram confirmed a right arch and aberrant, stenotic left subclavian artery, dilation of the main pulmonary artery, and agenesis of the left thyroid lobe. Repeat echocardiograms were concerning for severely dilated coronary arteries. Given dilation, a rheumatologic workup ensued, only identifying few weakly positive autoantibodies. Further imaging demonstrated narrowing of the aorta below the renal arteries and extending into the common iliac arteries and proximal femoral arteries. Given a physical exam devoid of rheumatologic findings, only weakly positive autoantibodies, normal inflammatory markers, and presence of the coronary artery dilation, the peripheral artery narrowings were not thought to be vasculitic. This case illustrates the need to identify definitive anomalies related to Goldenhar Syndrome. Although this infant’s presentation is rare, recognition of specific vascular findings will help differentiate Goldenhar Syndrome from other disease processes.

  11. The design of a reflectionless arterial prosthesis

    OpenAIRE

    Kol, Guy Richard; Woafo, Paul

    2010-01-01

    We propose a new technique to characterize a reflectionless arterial prosthesis. The corresponding transmission and reflection coefficients are determined from the geometric and the elastic properties of the arterial wall, and the interaction between the latter and the prosthesis are studied accordingly.

  12. TECAB - Totally Endoscopic Coronary Artery Bypass

    Medline Plus

    Full Text Available ... and we also like that aspect of this new type of surgery. The internal mammary artery is ... when it’s needed. Internal mammary artery. That’s a new word. That’s a new word, huh? Naked or ...

  13. A rare variant of common arterial trunk.

    OpenAIRE

    Rubay, J E; Macartney, F J; Anderson, R H

    1987-01-01

    A 13 day old baby was admitted to hospital with multiple abnormalities, increasing cyanosis, and cardiac failure. Cardiac catheterisation was performed on the day of admission and he died shortly after the procedure. A rare variant of common arterial trunk, in which the pulmonary arteries arose directly from the underside of the aortic arch, was found at necropsy.

  14. TECAB - Totally Endoscopic Coronary Artery Bypass

    Medline Plus

    Full Text Available ... as doctors use for this operation is “TECAB,” meaning “Totally Endoscopic Coronary Artery Bypass.” This procedure will ... make sure his vessels are able for bypass, meaning doing the CT angiograph for the peripheral arteries. ...

  15. TECAB - Totally Endoscopic Coronary Artery Bypass

    Medline Plus

    Full Text Available ... coronary artery bypass grafting procedure using robotics. We call this operation a “TECAB,” “Totally Endoscopic Coronary Artery ... see 2 the heart beating behind what we call the “pericardium,” the sack where the heart is ...

  16. Abdominal CT in acute arterial pathology

    International Nuclear Information System (INIS)

    The abdominal arterial pathology as studied by CT imagings is reviewed. The illustrated morphology of aortic aneurysms complications (arterial embolism, dissection and arteriosclerotic ulcer ) are studied. The signs that lead to diagnosis are assessed and the major points on which to base a correct radiological study are reviewed

  17. Radial artery approach for transcatheter arterial chemoembolization in patients with hepatocellular carcinoma

    Energy Technology Data Exchange (ETDEWEB)

    Ryu, Seung Hun; Shim, Hyung Jin; Kwak, Byung Kook; Kim, Gi Hyun; Lee, Hwa Yeon; Song, In Sup; Kim, Yang Soo [College of Medicine, Chungang Univ., Seoul (Korea, Republic of)

    2002-03-01

    To evaluate the feasibility and usefulness of the transradial approach for intra-arterial chemoembolization therapy in patients with hepatocellular carcinomas. Twenty-nine patients with hepatocellular carcinoma who underwent intra-arterial chemoembolization via the radial artery approach were involved in this study. All underwent Allen's test to check ulnar arterial patency. In all cases, we used the radial approach hepatic artery (RHA) catheter designed by ourselves, evaluating the selection ability of the hepatic artery using an RHA cathter, the number of punctures, the procedure time, and compression time at the puncture site as well as complications occurring during and after the procedure. Except for three in which puncture failure, brachial artery variation or hepatic artery variation occurred, all procedures were successful. The mean number of punctures was 3.5 and the average duration of the whole procedure was one and half hours. This gradually decreased as the number of procedures increased. The average duration at a compression of puncture site was 12 minutes. There were no major complications. Minor complications included minimal intimal dissection of the radial artery (3.8%), reversible vasospasm of the radial artery (7.7%), hematoma at a puncture site (7.7%) and transient neurologic deficit (3.8%). The transradial approach using an RHA catheter for intra-arterial chemoembolization theraphy in patients with hepatocellular carcinomas was technically feasible, with acceptable levels of safety. It may be a good alternative to absolute bed rest with a sand bag after the femoral approach.

  18. Clinical significance of hepatic artery variations originating from the superior mesenteric artery in abdominal tumor surgery

    Institute of Scientific and Technical Information of China (English)

    HUANG Yuan; LIU Chao; LIN Jin-ling

    2013-01-01

    Background Hepatic artery variations are frequent clinical occurrences.The aim of this study was to investigate the characteristic course of variant hepatic arteries originating from the superior mesenteric artery for the purpose of providing instructions for abdominal tumor surgery.Methods The course of variant hepatic arteries originating from the superior mesenteric artery was studied in 400 patients with liver cancer confirmed by digital subtraction angiography (DSA) and multi-slice spiral computed tomography angiography (MSCTA),and 86 patients with gastric cancer confirmed by preoperative MSCTA between June 2008 and June 2010 in the First Affiliated Hospital of Guangxi Medical University.Results Hepatic artery variations originating from the superior mesenteric artery were noticed in 49 liver cancer patients and 14 gastric cancer patients (total 63 cases),with a variation rate of 12.96%,including two cases (3.17%) where the hepatic arteries ran along the anterior pancreas,and 61 cases (96.83%) where the hepatic arteries ran along the posterior pancreas.Conclusions Hepatic artery variations originating from the superior mesenteric artery present as two types:the pre-pancreas type and the post-pancreas type with the latter predominating.This finding is of clinical significance in abdominal tumor surgeries where clearance of portal lymph nodes is needed.

  19. Catheterization and embolization of a replaced left hepatic artery via the right gastric artery through the anastomosis: a case report

    Directory of Open Access Journals (Sweden)

    Miyazaki Masaya

    2011-08-01

    Full Text Available Abstract Introduction Conversion of multiple hepatic arteries into a single vascular supply is a very important technique for repeat hepatic arterial infusion chemotherapy using an implanted port catheter system. Catheterization of a replaced left hepatic artery arising from a left gastric artery using a percutaneous catheter technique is sometimes difficult, despite the recent development of advanced interventional techniques. Case presentation We present a case of a 70-year-old Japanese man with multiple hepatocellular carcinomas in whom the replaced left hepatic artery arising from the left gastric artery needed to be embolized. After several failed procedures, the replaced left hepatic artery was successfully catheterized and embolized with a microcatheter and microcoils via the right gastric artery through the anastomosis. Conclusion A replaced left hepatic artery arising from a left gastric artery can be catheterized via a right gastric artery by using the appropriate microcatheter and microguidewires, and multiple hepatic arteries can be converted into a single supply.

  20. Fusiform aneurysm of a persistent trigeminal artery associated with rare intracranial arterial variations and subarachnoid hemorrhage.

    Science.gov (United States)

    Kimball, David; Ples, Horia; Kimball, Heather; Miclaus, Gratian D; Matusz, Petru; Loukas, Marios

    2015-01-01

    The trigeminal artery is one of four primitive anastomoses between the internal carotid artery and vertebrobasilar system that regresses in the sixth week of fetal development. A persistent trigeminal artery (PTA) is generally an incidental finding but may also be associated with intracranial vascular pathologies such as aneurysms, arteriovenous malformations, and cranial nerve compression syndromes. We present an extremely rare case of a right PTA with an associated bleeding fusiform aneurysm located in the carotidian (lateral) part of the PTA. In addition, this rare anatomic variation was associated with bilateral absence of the posterior communicating arteries, a left posterior cerebral artery originating from the left internal carotid artery, and agenesis of the A1 segment of the left anterior cerebral artery. PMID:25053265

  1. Basilar artery aneurysm at a persistent trigeminal artery junction. A case report and literature review.

    Science.gov (United States)

    Aguiar, G B; Conti, M L M; Veiga, J C E; Jory, M; Souza, R B

    2011-09-01

    The trigeminal artery is an anastomosis between the embryonic precursors of the vertebrobasilar and carotid systems, and may persist into adult life. The association of the persistent primitive trigeminal artery (PTA) with cerebral aneurysm is well documented in the literature and, in general, aneurysms are located in the anterior circulation. We describe a patient who presented with a panencephalic Fisher III subarachnoid hemorrhage due to rupture of an intracranial aneurysm. Digital arteriography showed a saccular aneurysm in the middle third of the basilar artery, adjacent to the junction with a persistent trigeminal artery. She was submitted to endovascular treatment with embolization of the basilar artery aneurysm with coils. Aneurysms at the PTA junction with the basilar artery are rare. This paper describes a case of PTA associated with an aneurysm in the basilar artery at PTA junction and briefly reviews the literature. PMID:22005697

  2. Bifurcating stents in the pulmonary arteries: A novel technique to relieve bilateral branch pulmonary artery obstruction.

    Science.gov (United States)

    Narayan, Hari K; Glatz, Andrew C; Rome, Jonathan J

    2015-10-01

    Balloon angioplasty and stent placement in close proximity to the bifurcation of the branch pulmonary arteries can be challenging. Multiple approaches have been previously described, though none of these approaches both treats bilateral proximal branch pulmonary artery stenosis and provides an anchor for a transcatheter pulmonary valve replacement. We report a novel approach that involves serial stent placement and balloon dilation through the struts of the stent in each pulmonary artery, along with balloon expansion of the proximal portion of the stents to the diameter of the main pulmonary artery. In the two cases we describe, this strategy resulted in significant relief of branch pulmonary artery obstruction without compromising the anatomy of the main pulmonary artery segment. This technique can be an effective way to alleviate stenoses of the bilateral proximal branch pulmonary arteries and provides a landing zone for a future transcatheter pulmonary valve. PMID:26256829

  3. RENOVASCULAR HYPERTENSION DUE TO RENAL ARTERY STENOSIS IN KLIPPEL-FEIL SYNDROME

    Directory of Open Access Journals (Sweden)

    Foyaca-Sibat H. MD.

    2003-01-01

    Full Text Available ABSTRACT We report one patient with Klippel-Feil (KFS syndrome, other associated anomalies, uncontrolled arterial hypertension, and renal artery stenosis. Because this patient underwent for surgical revascularization with unsuccessful result, all proposed way of treatments are revised, and we have hypothesized that probably for patients with KFS and unilateral renal artery stenosis, medical treatment with ACE inhibitors can provide more benefits than surgical revascularization or percutaneous transluminal angioplasty. We considered that those patients should be manage by a team of medical doctors being aware of their common associated anomalies, identifying all of them when it is possible then, making an integral evaluation of the each individual situation for establishing their medical priorities in order, and then address its treatments accordingly. If at this stage any surgical treatment is required, is important to bring those problems to the anesthesiologist’s attention for a very careful manipulation of the neck and head during induction of anesthesia. The final results will be strongly related with the capacity of management of the underlying cardio-respiratory, renal, skeletal, urogenital, and nervous system problems. . We also propose the term of Klippel-Feil syndrome "Plus" for those patients with cervical vertebral fusion and many other associated deformities rather than to add new eponyms to the long list that already exist. _____________ RESUMEN: HIPERTENSION RENOVASCULAR DEBIDO A ESTENOSIS DE LA ARTERIA RENAL EN EL SÍNDROME DE KLIPPEL-FEIL Reportamos un paciente afectado por un syndrome de Klippel-Feil, otras anormalias congenitas, hipertension arterial incontrolada y una estenosis unilateral de la arteria renal. Este paciente fue sometido a un tratamiento quirÚrgico de la estenosis de la arteria renal, cuyos resultados fueron no satisfactorios por lo que revisamos todas las alternativas de tratamiento para la estenosis

  4. Description of the celiac artery in domestic pigeons (Columba livia

    Directory of Open Access Journals (Sweden)

    Cibele Geeverghese

    2012-06-01

    Full Text Available This paper aimed to define the origin and distribution of the celiac artery and its collateral branches in 15 fowls from the Columba livia species, which were obtained from the Zoonosis Control Center of Brasilia, Brazil. In order to mark the arterial system of the specimens, the left brachiocephalic trunk was canullated and a colored water-latex solution was injected there. Afterwards, fowls were fixed in a 10% v/v formaldehyde solution and dissected with appropriate equipment, presenting the results described in this paper. The celiac artery originated from the ventral face of the descendent aorta. The first collateral branch arose from the celiac artery itself, forming the esophageal artery. Then, the celiac artery has bifurcated into two branches, named left and right branches of the celiac artery. The left branch emitted the proventricular ventral artery, followed by the splenic arteries, proventricular dorsal artery, and the left hepatic artery. The left branch has bifurcated into two branches, known as ventral and left gastric arteries. The right branch emitted the right hepatic artery, followed by the ileal artery and the right gastric artery. Finally, the right branch turned into the pancreaticoduodenal artery. Our findings showed a great similarity with the avian lineages of the Gallus gallus species, except for the lack of ileocecal artery, cystic branches, and dorsal gastric artery.

  5. Minimum training requirement in ultrasound imaging of peripheral arterial disease

    DEFF Research Database (Denmark)

    Eiberg, J P; Hansen, M A; Grønvall Rasmussen, J B;

    2008-01-01

    To demonstrate the minimum training requirement when performing ultrasound of peripheral arterial disease.......To demonstrate the minimum training requirement when performing ultrasound of peripheral arterial disease....

  6. Arterial hypertension and chronic liver disease

    DEFF Research Database (Denmark)

    Henriksen, Jens Henrik Sahl; Møller, S

    2005-01-01

    This review looks at the alterations in the systemic haemodynamics of patients with chronic liver disease (cirrhosis) in relation to essential hypertension and arterial hypertension of renal origin. Characteristic findings in patients with cirrhosis are vasodilatation with low overall systemic......, calcitonin gene-related peptide, nitric oxide, and other vasodilators, and is most pronounced in the splanchnic area. This provides an effective (although relative) counterbalance to raised arterial blood pressure. Subjects with arterial hypertension (essential, secondary) may become normotensive during the...... development of chronic liver disease, and arterial hypertension is rarely manifested in patients with cirrhosis, even in those with renovascular disease and high circulating renin activity. There is much dispute as to the understanding of homoeostatic regulation in cirrhotic patients with manifest arterial...

  7. [Popliteal artery entrampment: report of one case].

    Science.gov (United States)

    Parra, Juan; Corvalán, Felipe; Ibáñez, Fernando; Bianchi, Víctor; Bastías, Waldo; Salas, Cristian; Cam, Alfredo; Lamarca, Andrés

    2006-02-01

    Popliteal artery entrampment is a rare condition, occurring in young subjects, that causes ischemia of the extremity. The anatomical background is the compression or occlussion of the popliteal artery caused by forced plantar or dorsal flexion. We report a 32 year-old sportsman who presented with gangrene of the right first toe and a history of three months of progressive claudication. The Ankle-Brachial index and pulse volume curve registries showed a severe ischemia below the knee. Angiography showed a medial deviation of the popliteal artery associated to stenosis and aneurysm formation. A CT scan of the contralateral artery was normal. The patient was operated using a posterior approach, performing a reverse saphenous vein bypass graft and excising the popliteal artery. The postoperative period was uneventful. PMID:16554929

  8. Value of scintiangiography in arterial disease

    International Nuclear Information System (INIS)

    Arterial visualization using the gamma camera was achieved by peripheral intravenous injection of technetium pertechnetate Tc 99m 253 times in 200 patients. This technique, which successfully images the arterial tree to the level of the wrist and ankle, was validated by blind comparison of the scintiangiograms with contrast arteriograms or surgical findings or both in 93 studies. Although scintiangiography has less resolution than contrast arteriography, it provides quantitative and other important supplementary information in the diagnosis and management of patients with arterial disease. Scintiangiography has accurately diagnosed arterial occlusions (atherosclerotic, traumatic, and embolic), true and false aneurysms, and arterial stenoses. Patients sustaining trauma to the extremities may be evaluated by scintiangiography as a screening technique. Postoperatively, scintiangiography has replaced contrast arteriography for assessing patency of grafts and completeness of thromboembolectomy and for the long-term follow-up of these patients

  9. Pulse Wave Propagation in the Arterial Tree

    Science.gov (United States)

    van de Vosse, Frans N.; Stergiopulos, Nikos

    2011-01-01

    The beating heart creates blood pressure and flow pulsations that propagate as waves through the arterial tree that are reflected at transitions in arterial geometry and elasticity. Waves carry information about the matter in which they propagate. Therefore, modeling of arterial wave propagation extends our knowledge about the functioning of the cardiovascular system and provides a means to diagnose disorders and predict the outcome of medical interventions. In this review we focus on the physical and mathematical modeling of pulse wave propagation, based on general fluid dynamical principles. In addition we present potential applications in cardiovascular research and clinical practice. Models of short- and long-term adaptation of the arterial system and methods that deal with uncertainties in personalized model parameters and boundary conditions are briefly discussed, as they are believed to be major topics for further study and will boost the significance of arterial pulse wave modeling even more.

  10. Arterial Complications of Percutaneous Transhepatic Biliary Drainage

    International Nuclear Information System (INIS)

    Purpose: To report on the frequency and treatment of arterial complications due to percutaneous transhepatic biliary drainage (PTBD).Materials: Lesions of the intrahepatic artery were encountered in 10 of 525 patients treated by PTBD (2%). Hemobilia followed in 9 patients and subcapsular hematoma in 1. Seven patients had a benign biliary stenosis and 3 had a malignant stenosis.Results: The bleeding resolved spontaneously in 3 patients. In 7 it required arterial embolization, which was successfully achieved either through the percutaneous catheter (n= 3) or by arteriography (n= 4).Conclusion: Arterial bleeding is a relatively rare complication of PTBD that can easily be treated by selective arterial embolization when it does not resolve spontaneously. In this series its frequency was much higher (16%) when the stenosis was benign than when it was malignant (0.6%)

  11. Occipital artery anastomosis to vertebral artery causing pulsatile tinnitus.

    Science.gov (United States)

    Alexander, Matthew David; English, Joey; Hetts, Steven W

    2014-03-01

    Pulsatile tinnitus can result from various vascular etiologies that cause transmission of pulsatile turbulent flow into the inner ear. Less commonly, non-vascular sources cause increased blood flow and transmission of sound perceived as tinnitus. Thorough clinical examination leads to appropriate imaging evaluation and therapeutic planning. Most pulsatile tinnitus results from expected mechanisms, such as dural arteriovenous fistula, jugular bulb dehiscence, or paraganglioma; however, the literature contains reports of numerous rare causes, particularly variant anatomic morphologies. We present the case of a novel cause of pulsatile tinnitus in which collateral vascular flow compensated for decreased normal intracranial cerebral arterial supply and might have caused catastrophic consequences if intervened upon after assumptions based on an incomplete evaluation. PMID:23493341

  12. Anatomy of Inferior Mesenteric Artery in Fetuses.

    Science.gov (United States)

    Nuzhat, Ayesha

    2016-01-01

    Aim. To analyze Inferior Mesenteric Artery in fetuses through its site of origin, length, diameter, and variation of its branches. Method. 100 fetuses were collected from various hospitals in Warangal at Kakatiya Medical College in Andhra Pradesh, India, and were divided into two groups, group I (second-trimester fetuses) and group II (third-trimester fetuses), followed by dissection. Result. (1) Site of Origin. In group I fetuses, origin of Inferior Mesenteric Artery was at third lumbar vertebra in 33 out of 34 fetuses (97.2%). In one fetus it was at first lumbar vertebra, 2.8%. In all group II fetuses, origin of Inferior Mesenteric Artery was at third lumbar vertebra. (2) Length. In group I fetuses it ranged between 18 and 30 mm, average being 24 mm except in one fetus where it was 48 mm. In group II fetuses the length ranged from 30 to 34 mm, average being 32 mm. (3) Diameter. In group I fetuses it ranged from 0.5 to 1 mm, and in group II fetuses it ranged from 1 to 2 mm, average being 1.5 mm. (4) Branches. Out of 34 fetuses of group I, 4 fetuses showed variation. In one fetus left colic artery was arising from abdominal aorta, 2.9%. In 3 fetuses, Inferior Mesenteric Artery was giving a branch to left kidney, 8.8%. Out of 66 fetuses in group II, 64 had normal branching. In one fetus left renal artery was arising from Inferior Mesenteric Artery, 1.5%, and in another fetus one accessory renal artery was arising from Inferior Mesenteric Artery and entering the lower pole of left kidney. Conclusion. Formation, course, and branching pattern of an artery depend on development and origin of organs to attain the actual adult position. PMID:27313956

  13. Anatomy of Inferior Mesenteric Artery in Fetuses

    Directory of Open Access Journals (Sweden)

    Ayesha Nuzhat

    2016-01-01

    Full Text Available Aim. To analyze Inferior Mesenteric Artery in fetuses through its site of origin, length, diameter, and variation of its branches. Method. 100 fetuses were collected from various hospitals in Warangal at Kakatiya Medical College in Andhra Pradesh, India, and were divided into two groups, group I (second-trimester fetuses and group II (third-trimester fetuses, followed by dissection. Result. (1 Site of Origin. In group I fetuses, origin of Inferior Mesenteric Artery was at third lumbar vertebra in 33 out of 34 fetuses (97.2%. In one fetus it was at first lumbar vertebra, 2.8%. In all group II fetuses, origin of Inferior Mesenteric Artery was at third lumbar vertebra. (2 Length. In group I fetuses it ranged between 18 and 30 mm, average being 24 mm except in one fetus where it was 48 mm. In group II fetuses the length ranged from 30 to 34 mm, average being 32 mm. (3 Diameter. In group I fetuses it ranged from 0.5 to 1 mm, and in group II fetuses it ranged from 1 to 2 mm, average being 1.5 mm. (4 Branches. Out of 34 fetuses of group I, 4 fetuses showed variation. In one fetus left colic artery was arising from abdominal aorta, 2.9%. In 3 fetuses, Inferior Mesenteric Artery was giving a branch to left kidney, 8.8%. Out of 66 fetuses in group II, 64 had normal branching. In one fetus left renal artery was arising from Inferior Mesenteric Artery, 1.5%, and in another fetus one accessory renal artery was arising from Inferior Mesenteric Artery and entering the lower pole of left kidney. Conclusion. Formation, course, and branching pattern of an artery depend on development and origin of organs to attain the actual adult position.

  14. Effects of pressure on arterial failure.

    Science.gov (United States)

    Khamdaengyodtai, Pannathai; Vafai, Kambiz; Sakulchangsatjatai, Phrut; Terdtoon, Pradit

    2012-10-11

    A three-dimensional multilayer model of mechanical response for analyzing the effect of pressure on arterial failure is presented in this work. The multilayer arterial wall is considered to be composed of five different layers. The three-dimensional effects are incorporated within the five-concentric axisymmetric layers while incorporating the nonlinear elastic characteristics under combined extension and inflation. Constitutive equations for fiber-reinforced material are employed for three of the major layers, i.e., intima, media and adventitia and an isotropic material model is employed for the other two layers, i.e., endothelium and internal elastic lamina. Our own developed three-dimensional five-layer model has been utilized to model propagated rupture area of the arterial wall. Required parameters for each layer are obtained by using a nonlinear least square method fitted to in vivo non-invasive experimental data of human artery and the effects of pressure on arterial failure are examined. The solutions from our computational model are compared with previous studies and good agreements are observed. Local stresses and strain distributions across the deformed arterial wall are illustrated and consequently the rupture area is predicted by varying luminal pressure in the physiological range and beyond. The effects of pressure on the arterial failure have been interpreted based on this comprehensive three-dimensional five-layer arterial wall model. This is the first study which employs two constitutive equations and incorporates a five-layer arterial wall model in three-dimensions based on in vivo non-invasive experimental data for a human artery. PMID:22980577

  15. A STUDY ON THE PATTERNS OF CIRCUMFLEX FEMORAL ARTERIES

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    R. Chitra

    2015-09-01

    Full Text Available Context: Many different patterns have been described to classify the origins of circumflex femoral arteries by many authors since from 1860.The aim of the present study was to classify the circumflex femoral arteries in 100 lower limbs of adult cadavers of both sexes following the recent classification and to compare with the previous studies. Materials and Methods: A total of 100 lower limbs of 50 embalmed human adult cadavers (Male: 37, Female: 13 were dissected and observed for the origins of circumflex femoral arteries in femoral triangle in routine educational dissection in the period of 2005-2009 Results: The medial and lateral circumflex femoral arteries have been classified into three different patterns based on the levels of their origin. Pattern I: Both arteries arose from the profunda femoris artery (56%. Type Ia, medial circumflex femoral artery origin was proximal to the lateral circumflex femoral artery origin (69%; Type Ib, lateral circumflex femoral artery origin was proximal to medial circumflex femoral artery origin (16 %; Type Ic, both arteries arose from a common trunk or at same level (14%. Pattern II: One of the arteries arose from the femoral artery and the other from the profunda femoris artery (36%. Type IIa, the medial circumflex femoral artery arose from the femoral artery (75% and Type IIb, the lateral circumflex femoral artery arose from the femoral artery (25%.Pattern III: Both arteries arose from the femoral artery (7%. The medial circumflex femoral artery was absent in a female cadaver on right side. Conclusion: In every pattern or type, there was significantly unilateral higher occurrence than bilateral occurrence. A precise knowledge of the circumflex femoral arteries in relation to the profunda femoris artery is important in surgical interventions of the hip region

  16. Dynamic contrast-enhanced ultrasound and transient arterial occlusion for quantification of arterial perfusion reserve in peripheral arterial disease

    International Nuclear Information System (INIS)

    Objective: To quantify muscular micro-perfusion and arterial perfusion reserve in peripheral arterial disease (PAD) with dynamic contrast-enhanced ultrasound (CEUS) and transient arterial occlusion. Materials and methods: This study had local institutional review board approval and written informed consent was obtained from all subjects. We examined the dominant lower leg of 40 PAD Fontaine stage IIb patients (mean age, 65 years) and 40 healthy volunteers (mean age, 54 years) with CEUS (7 MHz; MI, 0.28) during continuous intravenous infusion of 4.8 mL microbubbles. Transient arterial occlusion at mid-thigh level simulated physical exercise. With time–CEUS–intensity curves obtained from regions of interest within calf muscles, we derived the maximum CEUS signal after occlusion (max) and its time (tmax), slope to maximum (m), vascular response after occlusion (AUCpost), and analysed accuracy, receiver operating characteristic (ROC) curves, and correlations with ankle-brachial index (ABI) and walking distance. Results: All parameters differed in PAD and volunteers (p max was delayed (31.2 ± 13.6 vs. 16.7 ± 8.5 s, p post as optimal parameter combination for diagnosing PAD and therefore impaired arterial perfusion reserve. Conclusions: Dynamic CEUS with transient arterial occlusion quantifies muscular micro-perfusion and arterial perfusion reserve. The technique is accurate to diagnose PAD.

  17. Differential imaging features of pulmonary artery dissection from other intraluminal diseases of pulmonary artery: Two cases report

    International Nuclear Information System (INIS)

    Pulmonary artery dissection is rarer than other intraluminal diseases of pulmonary artery such as pulmonary thromboembolism or pulmonary artery sarcoma. We report two cases of pulmonary artery dissection mimicking pulmonary artery sarcoma. Computed tomography (CT) showed no enhancement of intrapulmonary arterial lesion or expansion of involved pulmonary artery. Magnetic resonance imaging (MRI) showed low-signal intensity intimal flap on T1- and T2-weighted images. There was no fluorodeoxyglucose (FDG) uptake on positron emission tomography (PET)-CT. In this case report, we describe the imaging features of pulmonary artery dissection on CT, MRI, and PET-CT.

  18. Differential imaging features of pulmonary artery dissection from other intraluminal diseases of pulmonary artery: Two cases report

    Energy Technology Data Exchange (ETDEWEB)

    Park, Joo Ho; Shin, Hyun Woong; Sohn, Kung Rak; Lee, Yil Gi [Daegu Fatima Hospital, Daegu(Korea, Republic of)

    2015-03-15

    Pulmonary artery dissection is rarer than other intraluminal diseases of pulmonary artery such as pulmonary thromboembolism or pulmonary artery sarcoma. We report two cases of pulmonary artery dissection mimicking pulmonary artery sarcoma. Computed tomography (CT) showed no enhancement of intrapulmonary arterial lesion or expansion of involved pulmonary artery. Magnetic resonance imaging (MRI) showed low-signal intensity intimal flap on T1- and T2-weighted images. There was no fluorodeoxyglucose (FDG) uptake on positron emission tomography (PET)-CT. In this case report, we describe the imaging features of pulmonary artery dissection on CT, MRI, and PET-CT.

  19. Anticoagulation in Pulmonary Arterial Hypertension.

    Science.gov (United States)

    Robinson, Jeffrey C; Pugliese, Steven C; Fox, Daniel L; Badesch, David B

    2016-06-01

    Pulmonary arterial hypertension (PAH) is characterized by molecular and pathologic alteration to the pulmonary circulation, resulting in increased pulmonary vascular resistance, right ventricular failure, and eventual death. Pharmacologic treatment of PAH consists of use of a multitude of pulmonary vasodilators, sometimes in combination. PAH has been associated with increased thrombosis and disrupted coagulation and fibrinolysis, making anticoagulation an attractive and frequently employed therapeutic modality. Observational studies have provided some insight into the therapeutic potential of anticoagulation in idiopathic PAH, but there is a distinct lack of well-controlled prospective trials. Due to the conflicting evidence, there is a large amount of heterogeneity in the application of therapeutic anticoagulation in PAH and further well-controlled prospective trials are needed to clarify its role in treating PAH. PMID:27137522

  20. Idiopathic pediatric retinal artery occlusion

    Directory of Open Access Journals (Sweden)

    Manayath George

    2010-01-01

    Full Text Available We report a case of branch retinal artery occlusion (BRAO in a healthy young girl. An eight-year-old girl presented with sudden loss of vision in her left eye. She had a pale retina with macular edema consistent with extensive BRAO. A thorough workup was performed to determine any etiologic factor. All test results were within normal limits. Her visual acuity improved from finger counting to 20/40 over two weeks, on immediate treatment with intravenous steroids (methyl prednisolone. This case suggests that BRAO can occur in healthy children without any detectable systemic or ocular disorders and a dramatic improvement may be achieved with prompt treatment with intravenous steroids.

  1. Foco no cliente: ferramenta essencial na gestão por competência em enfermagem Foco en el cliente: una herramienta esencial en la gestión por competencia en emfermería Focus on the customer: an essential tool in management competence in nursing

    Directory of Open Access Journals (Sweden)

    Rosa Maria Ruthes

    2010-04-01

    Full Text Available Uma reflexão sobre tese de doutorado, na qual foi realizada uma abstração da teoria descrita por autores especialistas na temática e uma transposição para a prática da gestão por competência em Enfermagem. A Competência elenca atributos de conhecimento, habilidade e atitude - denominados CHA, para agregar valor à organização de saúde com foco no cliente. É imprescindível despertar em toda a equipe, a responsabilidade e efetiva preocupação com o paciente, família e visitantes. O profissional se constitui como o líder inspirador de seu grupo. A competência gerencial do enfermeiro pode oportunizar o desenvolvimento dos recursos humanos e promover encantamento no atendimento dos clientes, fazendo a diferença nas organizações de saúde.Reflexión en tesis de doctorado. Fue llevada con abstracción de la teoría descrita por los autores especialistas en la temática, transposición para el práctico de la gerencia de la capacidad en el oficio de enfermera. La capacidad esencial demuestra cualidades del conocimiento, de la capacidad y de la actitud - CHA llamado, de agregar valor a la organización de salud con el foco en el cliente. Es esencial despertarse en todo el equipo, la responsabilidad y la preocupación verdadera con el paciente, la familia y los visitantes. El profesional se constituye como el líder inspirado de su grupo. La capacidad de la gerencia de la enfermera puede dar el cambio al desarrollo de los recursos humanos y promover encantamiento en la atención de los clientes, influyendo en las organizaciones de salud.Reflection about a doctorate's thesis. It was carried through an abstraction of the described theory by specialist authors in thematic, a transposition for the practical of competency management in nursing. The essential competency shows attributes of knowledge, ability and attitude - called CHA, to add value to the organization of health with focus in the customer. It is essential to awake in all the

  2. New therapies for arterial hypertension.

    Science.gov (United States)

    Pagliaro, Beniamino; Santolamazza, Caterina; Rubattu, Speranza; Volpe, Massimo

    2016-03-01

    Arterial hypertension is the most common chronic disease in developed countries and it is the leading risk factor for stroke, ischemic heart disease, congestive heart failure, chronic renal failure and peripheral artery disease. Its prevalence appears to be about 30-45% of the general population. Recent European guidelines estimate that up to 15-20% of the hypertensive patients are not controlled on a dual antihypertensive combination and they require three or more different antihypertensive drug classes to achieve adequate blood pressure control. The guidelines confirmed that diuretics, beta-blockers, calcium-channel blockers, angiotensin-converting enzyme inhibitors and angiotensin receptor blockers are suitable for the initiation and maintenance of antihypertensive treatment, either as monotherapy or in combination therapy. Very few antihypertensive agents have reached the market over the last few years, but no new therapeutic class has really emerged. The long-term adherence to cardiovascular drugs is still low in both primary and secondary prevention of cardiovascular diseases. In particular, the issue of compliance is persistently high in hypertension, despite the fixed-dose combination therapy. As a consequence, a cohort of high-risk hypertensive population, represented by patients affected by refractory and resistant hypertension, can be identified. Therefore, the need of controlling BP in high-risk patients may be addressed, in part, by the development of new drugs, devices and procedures that are designed to treat hypertension and comorbidities. In this review we will comprehensively discuss the current literature on recent therapeutic advances in hypertension, including both medical therapy and interventional procedures. PMID:26730462

  3. Differences in superior thyroid artery and inferior thyroid artery blood flow spectrum parameters in subacute thyroiditis

    Institute of Scientific and Technical Information of China (English)

    Jin-Bo Li

    2016-01-01

    Objective:To study the differences in superior thyroid artery and inferior thyroid artery blood flow spectrum parameters in subacute thyroiditis. Methods:A Total of 40 cases of patients with subacute thyroiditis and 40 cases of healthy volunteers were selected for study and enrolled in pathology group and control group respectively, color Doppler ultrasonography was conducted to detect peak blood flow velocities (Vmax) of superior thyroid artery and inferior thyroid artery as well as resistance index (RI), and serum was collected to detect thyroid hormone contents, infection indexes and oxidative stress indexes. Results:Peak blood flow velocities Vmax of superior thyroid artery and inferior thyroid artery of pathology group were significantly higher than those of control group, and resistance index RI was not different from that of control group;FT3, FT4, TT3, TT4, ESR, CRP, PCT and MDA of pathology group were significantly higher than those of control group, and SOD and TAOC were significantly lower than those of control group;Vmax of superior thyroid artery and inferior thyroid artery were positively correlated with FT3, FT4, TT3, TT4, ESR, CRP, PCT and MDA, and negatively correlated with SOD and TAOC. Conclusion:Peak blood flow velocities (Vmax) of superior thyroid artery and inferior thyroid artery in subacute thyroiditis are significantly accelerated, Vmax has good consistency with thyroid hormone contents, infection indexes and oxidative stress indexes, and it can accurately assess the severity of the disease.

  4. Selective catheterization of the brachiocephalic arteries via the right brachial artery

    International Nuclear Information System (INIS)

    Selective intra-arterial digital subtraction angiography of the brachiocephalic arteries using the right brachial artery approach was successfully performed for 169 of 173 patients, 33 of whom were outpatients. Catheterization was unsuccessful for four patients; two of them elderly hypertensive men with tortuos brachial arteries, and two of them middle-aged obese women for whom arterial puncture could not be performed. 4-F modified Simmons type catheters were used in this study. Selective catheterizations of both common carotid arteries were successfully performed in all but one patient, a woman whose aberrant right subclavian artery prevented bilateral common carotid arterial catheterizations. Selective catheterizations of the right vertebral and left subclavian arteries, though relatively difficult, were successfully performed in 84.2% and 93.9% of patients, respectively. The mean examination time for a four-vessel study was 24.3 min. No major complications were encountered. Thus, transbrachial selective catheterization of the brachiocephalic arteries proved to be safe, useful, and relatively easy to perform. (orig.)

  5. Transcatheter arterial embolization for traumatic bleeding control

    Energy Technology Data Exchange (ETDEWEB)

    Ryu, Choon Wook; Lee, Sang Kwon; Suh, Kyung Jin; Kim, Tae Heon; Kim, Yong Joo; Kang, Duck Sik [Kyungpook National University College of Medicine, Taegu (Korea, Republic of)

    1989-04-15

    Angiography is essential for the detection of bleeding vessels in traumatic vascular injury. Immediately after the diagnosis, transcatheter embolization can be performed for the control of bleeding effectively and easily with proper use of embolic materials. Transcatheter embolization is believed to be the treatment of choice when emergency control is needed, where surgical approach is difficult and in those who are poor candidate for surgery. We have tried bleeding control in 18 cases of trauma over recent 4 years. The results were as follows; 1. Causes of bleeding(cases): Blunt or penetrating trauma (10), latrogenic trauma (8), (Postoperative (5), Needle biopsy (2), Percutaneous hepatic procedure (1)) 2. Embolized vessels: Renal artery branches (8), Hepatic artery branches (2), Arteries supplying chest wall (2), External carotid artery branches (3), Internal carotid artery (1), Circumflex humeral artery (1), Internal iliac artery branches (1). 3. Embolic agents: Gelfoam cubes (16), Stainless steel coils (3), Detachable latex balloon (1). 4. Successful bleeding control was achieved in 17 cases and reduction of the amount of bleeding in one case without significant complications.

  6. Arterial Stiffness and Dialysis Calcium Concentration

    Directory of Open Access Journals (Sweden)

    Fabrice Mac-Way

    2011-01-01

    Full Text Available Arterial stiffness is the major determinant of isolated systolic hypertension and increased pulse pressure. Aortic stiffness is also associated with increased cardiovascular morbidity and mortality in patients with chronic kidney disease, hypertension, and general population. Hemodynamically, arterial stiffness results in earlier aortic pulse wave reflection leading to increased cardiac workload and decreased myocardial perfusion. Although the clinical consequence of aortic stiffness has been clearly established, its pathophysiology in various clinical conditions still remains poorly understood. The aim of the present paper is to review the studies that have looked at the impact of dialysis calcium concentration on arterial stiffness. Overall, the results of small short-term studies suggest that higher dialysis calcium is associated with a transient but significant increase in arterial stiffness. This calcium dependant increase in arterial stiffness is potentially explained by increased vascular smooth muscle tone of the conduit arteries and is not solely explained by changes in mean blood pressure. However, the optimal DCa remains to be determined, and long term studies are required to evaluate its impact on the progression of arterial stiffness.

  7. Ausencia de correlación entre las cifras tensionales, el daño de órgano blanco y la presencia de retinopatía en el modelo animal de hipertensión con L-NAME: ¿Son necesarios nuevos modelos animales en hipertensión arterial?.

    OpenAIRE

    Jorge Hernán Ramírez; Mauricio Palacios; Hugo Hernán Ocampo; Claudia Zuluaga; Oscar Gutiérrez

    2009-01-01

    La comunidad científica nacional e internacional utiliza ampliamente modelos animales de hipertensión para el estudio de posibles fármacos antihipertensivos. Sin embargo, algunas de las complicaciones de la hipertensión arterial no se expresan por completo en los modelos animales. En este artículo se presenta la falta de correlación de las cifras tensionales con la retinopatía, en el modelo de ratas hipertensas por L-NAME. Además, plantea interrogantes con respecto al desarrollo de nuevos mod...

  8. Ausencia de correlación entre las cifras tensionales, el daño de órgano blanco y la presencia de retinopatía en el modelo animal de hipertensión con L-NAME: ¿Son necesarios nuevos modelos animales en hipertensión arterial?

    OpenAIRE

    Jorge Hernán Ramírez; Mauricio Palacios; Hugo Hernán Ocampo; Claudia Zuluaga; Oscar Gutiérrez

    2006-01-01

    La comunidad científica nacional e internacional utiliza ampliamente modelos animales de hipertensión para el estudio de posibles fármacos antihipertensivos. Sin embargo, algunas de las complicaciones de la hipertensión arterial no se expresan por completo en los modelos animales. En este artículo se presenta la falta de correlación de las cifras tensionales con la retinopatía, en el modelo de ratas hipertensas por L-NAME. Además, plantea interrogantes con respecto al desarrollo de nuevos mod...

  9. El arte como posible conocimiento

    OpenAIRE

    Janitzio Alatriste Tobilla; Eduardo Bernal Gómez; Manuel Encastin Cruz

    2010-01-01

    Este artículo es producto de una investigación que intenta construir un modelo metodológico para concebir la producción artística como una forma de conocimiento e incorporar el quehacer imaginario del artista dentro de los esquemas que regulan la investigación académica tanto en México como en el mundo. La construcción de esta propuesta metodológica ha sido creada desde tres posiciones con respecto al conocimiento: la semiótica de Charles S. Peirce, la teoría psicoanalítica de Jacques Lacan y...

  10. Una historia de lo posible

    OpenAIRE

    Fernández Prieto, Lorena

    2014-01-01

    Esta investigación parte del intento de deconstruir la disciplina histórica para poner de manifiesto cómo, detrás de su fachada de pretendida objetividad, veracidad y de sus intentos por encajar bajo los parámetros de la ciencia, se esconde un relato que organiza, ordena y confecciona nuestro presente. A esta visión de la Historia como organización del presente, como escritura y construcción, contrapongo una historia como deconstrucción, como contra-historia. Esta manera de entender la h...

  11. RIGHT SUPERIOR POLAR ARTERY ARISING FROM AORTA

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    Sreekanth

    2013-05-01

    Full Text Available ABSTRACT: The renal vasculature was always a subject of varia tions both in the number and pattern of portal of entry into kidney and Perihilar placement of the artery, vein and pelvis. Good anatomical insight is an essential prerequisite besides the surgical expertise. The cadaveric dissection at Shadan Institute of Medical Sciences, Teaching Hospital and Research Centre, revealed superior / upper polar artery arising from the lateral aspect of the aorta just proximal to the origin of Main Renal Artery (MRA. T he main renal artery and the accessory renal artery had almost a common point of origin. Th e peri-hilar segmentation of the main renal artery was a fork like pattern. One of the segmental arteries was long and had its portal of entry into the kidney by perforating the capsule of the ant erior substance of the kidney. The remaining segmental branches had their portal of ent ry through the hilum. The lower two segmental branches were placed anterior to the main renal vein causing altered hilar anatomy. A thorough knowledge of the frequently to the rarel y occurring wide range of variations of renal vasculature has significance in exploration and trea tment of renal trauma, renal transplantation, renal artery embolization, surgery for abdominal ao rtic aneurysm and conservative or radical renal surgery. Such a rare variation including the combination of extra renal peri-hilar segmentation of MRA with superior polar artery is wor thy of concern to the urologists harvesting kidneys from the live donors for performi ng transplantation procedures, partial nephrectomies for the hilar tumors and for Radiologi sts during interpretation of the angiograms

  12. Diagnosis and outcome of cervical artery dissection

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    Divjak Ivana

    2011-01-01

    Full Text Available Introduction. Spontaneous dissection of the cervical artery is a rare non-atherosclerotic vascular disease of unknown aetiology and unclear pathogenesis that may be a cause of ischemic stroke in young adults. Diagnosis. Precise diagnosis of dissection of the cervical artery - carotid or vertebral - is possible with cervical axial magnetic resonance imaging and magnetic resonance angiography. Treatment. The recommended treatment in the acute phase of cervical artery dissection is anticoagulant or antithrombotic therapy, aimed at preventing a primary or recurrent ischemic event. There have been as yet no results of randomized controlled studies comparing efficacy of both treatments. An ongoing randomized multicentre study is expected to provide answers about the effects of these treatments in cervical artery dissection. Outcome. Complete resolution of arterial abnormalities is achieved in around 46% of stenoses, 33% of occlusions, and 12% of dissecting aneurysms. Recurrent events. Recurrence of cerebral ischemia and cervical artery dissection seems to be rare, although some data suggest that early ischemic and late cervical artery dissection recurrences could be underestimated. Mortality and functional outcome. In comparison with other causes of stroke in young adults, the functional outcome of cervical artery dissection is good in contrast to its socio-professional effects, which may be unsatisfactory. The mortality rate of cervical artery dissection is low, although it may be underestimated since some patients with malignant infarction die before the diagnosis is established. Conclusion. Further research is warranted to improve our understanding of the underlying pathophysiology, to assess the long-term outcome, and ultimately to provide treatment and prevention strategies.

  13. El factor territorial en la política educativa: ¿Es posible una fundamentación pedagógica?

    Directory of Open Access Journals (Sweden)

    Ángel GARCÍA DEL DUJO

    2009-11-01

    Full Text Available RESUMEN: ¿Es posible una lectura no política del papel que juega el territorio en la educación y en la que podamos apoyar nuestras decisiones políticas? El artículo trata de responder a este interrogante, para lo que los autores, después de analizar los enfoques tradicionales entre territorio y políticas educativas, se introducen en terrenos de la antropología sociocultural donde creen encontrar principios y conceptos no estrictamente ideológicos que les permiten fundamentar pedagógicamente la necesaria conexión entre territorio y política educativa. El artículo termina señalando algunos de los riesgos y peligros que encierran estos planteamientos y proponiendo líneas de pensamiento y acción para el desarrollo en educación de políticas territoriales.ABSTRACT: Is it possible a non political reading of the role that is been played by the territory in the education and in which we could base our political decisions? The article tries to answer this question. After analysing the traditional focus between territory and educational policies, the authors introduce themselves in the fields of the socio-cultural anthropology where they find principles and concepts non strictly ideological that permit them to base pedagogically the necessary connection between territory and educational policy. The article concludes by pointing some of the risks and dangers contained by those approaches and proposing ways of thinking and acting for the developing of territorial policies in education. The article concludes by pointing some of the risks and dangers contained by those approaches and proposing ways of thinking and acting for the developing of territorial policies in education.

  14. Determinantes de la transmisión vertical del VIH en Cataluña (1997-2001: ¿es posible su eliminación?

    Directory of Open Access Journals (Sweden)

    Ramos F.

    2003-01-01

    Full Text Available Objetivos: Identificar y describir los factores que han hecho posible la existencia de nuevas infecciones de VIH por transmisión vertical desde la implementación del tratamiento antirretroviral en la gestante seropositiva (1997-2001 en Cataluña. Métodos: Revisión sistemática de casos identificados en servicios de pediatría de todos los hospitales de Cataluña. Resultados: Se identificaron 28 casos de infección pediátrica por VIH: 9, 9, 8, 2 y 0 por año de nacimiento de 1997 a 2001, respectivamente. De 16 madres con diagnóstico de infección por VIH conocido antes o durante el embarazo, 9 realizaron profilaxis antirretroviral durante éste (5 con buena adhesión, uno desconocido y el resto con mala adhesión y 7 no realizaron profilaxis (6 por rechazo y uno no se conoce. De 12 diagnosticadas después del parto, 5 fueron embarazos no controlados y el resto poco o bien controlados. De estos últimos, en 6 no se practicó serología para VIH y en uno fue negativa en el primer trimestre. Conclusiones: La transmisión vertical del VIH en Cataluña ha disminuido en los últimos años, pero se han producido infecciones por la mala implementación en algún caso de las medidas preventivas conocidas. Debería ofrecerse la prueba diagnóstica para VIH a toda gestante no sólo en el primer trimestre de embarazo sino también al final, si se sospecha exposición al virus, y en caso de gestaciones no controladas hay que usar pruebas diagnósticas de lectura rápida en la sala de partos.

  15. La vieja batalla entre la especie humana y el bacilo de Koch: ¿Es posible soñar con erradicar la tuberculosis?

    Directory of Open Access Journals (Sweden)

    J. A. Caminero

    2007-01-01

    Full Text Available El presente trabajo trata de analizar la complejidad de la vieja batalla que lleva librando, desde hace millones de años, la especie humana contra Mycobacterium tuberculosis, intentando realizar un repaso de todos los conocimientos que se tienen sobre esta enfermedad y de lo más importante de lo que puede acontecer en el futuro, con el fin de llegar a la conclusión de si es posible acabar soñando con erradicar esta enfermedad que tanto daño ha causado a la humanidad. A pesar de que la especie humana tiene suficientes conocimientos para vencer la batalla a M. tuberculosis, importantes condicionantes, sobre todo sociales (pobreza, inmigración, VIH, MDR, están favoreciendo la guerra del lado del bacilo. Y que, incluso aplicando adecuadamente todos los buenos conocimientos adquiridos para el control de la TB (detección y curación de casos, quimioprofilaxis, vacunación BCG, etc., se tardaría aún varios siglos en poder conseguir la erradicación. Sólo la posibilidad de descubrir una vacuna 100% eficaz, o el descubrimiento de nuevas asociaciones antimicrobianas que pudiesen curar la enfermedad en un plazo no superior a 15 días, podría acelerar este ritmo hacia la erradicación. Pero, lamentablemente, no existen fundamentos que permitan soñar con que cualquiera de estas dos posibilidades pueda cumplirse en los próximos 10-20 años. Por lo tanto, el sueño de erradicar la TB es un sueño muy antiguo, pero, lamentablemente, aún muy lejano.

  16. Utilidad del modelo animal ratón-pulmón para evaluar la virulencia de posibles cepas vacunales de Shigella spp

    Directory of Open Access Journals (Sweden)

    Olga M. Martínez

    2008-04-01

    Full Text Available Shigella flexneri y Shigella sonnei, como cualquier otra especie del género Shigella, se sitúan entre los principales agentes etiológicos de las enfermedades diarreicas agudas, sobre todo aquellas que ocurren en los países en vías de desarrollo, aunque por la baja dosis infectante de este enteropatógeno no se excluyen los países desarrollados. Esta situación conlleva a la elaboración de vacunas para prevenir esta enfermedad y la necesidad de un modelo animal que pruebe la eficacia protectora e inmunogénica de posibles candidatos vacunales contra la shigellosis, situación que ha motivado numerosos estudios por la dificultad de demostrar la enteropatía intestinal en los monos y humanos. Lo anteriormente expuesto, más la capacidad de Shigella spp para mostrar resistencia a los antimicrobianos, motivó la realización de este trabajo. En el mismo se constató la utilidad del modelo animal ratón-pulmón para evaluar la virulencia de candidatos vacunales a partir de este microorganismo. Se utilizó la técnica de inoculación intranasal con una concentración entre 107 y 109 UFC de cepas de Shigella flexneri y Shigella sonnei. Por todos los resultados obtenidos con el modelo animal ratón-pulmón se concluyó que este modelo puede ser eficiente para los estudios preclínicos de cualquier candidato vacunal a partir de Shigella spp.

  17. Participación y hábitat: ¿sueño posible o relación no deseada?

    Directory of Open Access Journals (Sweden)

    Jaime Hernández García

    2005-01-01

    Full Text Available El presente artículo se concentrará en las relaciones que se tejen en los sectores de hábitat popular de periferia entre los pobladores y su entorno; como estas relaciones transforman y mejoran la calidad de vida de la población. Sectores que en ciudades como Bogotá, son mayoritarios y crecientes; con grandes carencias en lo económico y en lo social, así como en servicios e infraestructura urbana. Han crecido a espaldas de la planeación económica y urbana, y en gran medida se han desarrollado a partir de la iniciativa y posibilidades de sus propios habitantes. Han construido y apropiado su hábitat, han desarrollado y expresado sus sueños de futuro a partir de una construcción colectiva explícita e implícita, de una visión comunitaria no siempre compartida pero presente, y a través de unos mecanismos de participación a veces brindados y otras muchas exigidos. Se presentarán algunas reflexiones a partir de la exploración del tema en las periferias de Bogotá; reflexiones que fundamentalmente invitan a pensar con mayor seriedad y profundidad en el papel del poblador como agente de creación, transformación, mejoramiento y expresión de su hábitat urbano. Finalmente se harán algunas observaciones en torno a la pregunta que plantea el articulo: es la participación en el hábitat un sueño posible o una relación no deseada?

  18. Evolución del proceso de regulación bancaria hasta Basilea-2 : origen, características y posibles efectos

    Directory of Open Access Journals (Sweden)

    Cristina Gutierrez López

    2006-06-01

    Full Text Available El sistema finaciero se prepara para afrontar los retos derivados del Nuevo Acuerdo de Capitales aprobado en 2004, que viene a culminar un proceso de regulación financiera definido por la exigencia de capital como expresión de la solvencia. Esta evolución ha dado respuesta a la actividad de los intermediarios financieros, los cambios debidos a la globalización e innovación financiera, y los nuevos riesgos que han surgido en consecuencia. Además, se incorpora la supervisión a través del regulador y de la disciplina de mercado. El artículo resume las características de la regulación de capital bancario, hasta llegar al capital ajustado al riesgo que caracteriza los Acuerdos elaborados desde Basilea, para detallar después los contenidos del Nuevo Acuerdo, sus fortalezas y debilidades, así como su posibles efectos.The financial system is ready to face the challenges derived from the New Basel Capital Accord issued in 2004, which reflects the financial regulatory process characterized by the need of maintaining capital as expression of solvency. This evolution has responded to financial intermediaries activity, changes due to globalization and financial innovation, and the new risks which have came across. Additionally, it includes the supervison aspect through regulators and market discipline. This paper summarizes the characteristics of bank capital regulation, in order to explain risk-based-capital in the Basel Accords, putting forward the New Accord content, as well as its strengths, weaknesses, and possible effects.

  19. Ecoanálisis como puerta de entrada a la decodificación de lo cotidiano: hacia una educación posible

    Directory of Open Access Journals (Sweden)

    Chavarría González, María Celina

    2006-12-01

    Full Text Available Resumen: Se destacan las ventajas del ecoanálisis como andamiaje para decodificar los valores que inconscientemente plasmamos en las relaciones y ambientes que disponemos para la formación de la niñez en la educación preescolar, potenciando diálogos concretos sobre la dimensión de lo posible. Orientamos esta decodificación hacia el esclarecimiento crítico de realidades encubiertas y el empoderamiento hacia su transformación. El ecoanálisis promueve acercamientos progresivos y compartidos hacia cosmovisiones másacordes con las necesidades de la época actual, potenciando la decodificación de lo cotidiano y transformaciones curriculares desde comunidades de aprendizaje transdisciplinarias. Se hace referencia a tres instancias de investigación-acción donde el ecoanálisis dio como resultado cambios significativos en el quehacer cotidiano y en las actuaciones de la niñez, reforzando un enfoque holista y de derechos. Se esbozan elementos para poner este enfoque en práctica y se hace hincapié en que sólo cuando los valores se plasman en lo cotidiano, en las vivencias del día a día, cuando integran cuerpo-emociones-mente, es que se logran interiorizar.Abastract: The advantages of eco-analytic approaches to decode values unconsciously embedded in educational relationships and environments for preschool children are described. Possibilities for approaching the quotidian as communities of learners or communities of practice are sketched, as a means of transforming educational and daycare environments and worldviews. Establishing dialogues to decode the quotidian, expounding on the language of possibilities, and promoting progressive and shared approaches to worldviews more coherent with the pressing needs of conscious cultural evolution are stressed. Reference is made to three concrete experiences with this approach.

  20. MR imaging of persistent primitive trigeminal artery

    Energy Technology Data Exchange (ETDEWEB)

    Ashikaga, Ryuichiro; Araki, Yutaka; Ono, Yukihiko; Ishida, Osamu [Kinki Univ., Higashi-Osaka, Osaka (Japan); Mabuchi, Nobuhisa

    1997-02-01

    The persistent trigeminal artery is the most common anomaly of the primitive carotid-vertebrobasilar anastomoses. We reviewed MR images and MR angiographies of 11 patients with primitive trigeminal artery. In 8 of the 11 cases, PTA were identified with conventional long TR spin-echo images. In 8 of 11 cases, a hypoplastic basilar trunk associated with PTA was seen on both MR images and MR angiographies. In 7 of 11 cases, a hypoplasia or agenesis of the ipsilateral posterior communicating artery was seen on MR angiographies. (author)

  1. Severe Hemobilia from Hepatic Artery Pseudoaneurysm

    Directory of Open Access Journals (Sweden)

    Fabio Sansonna

    2011-01-01

    Full Text Available Background. Hemobilia is a rare, jeopardizing complication of laparoscopic cholecystectomy coming upon usually within 4 weeks after surgery. The first-line management is angiographic coil embolization of hepatic arteries, which is successful in the majority of bleedings: in a minority of cases, a second embolization or even laparotomy is needed. Case Presentation. We describe the case history of a patient in which laparoscopic cholecystectomy was complicated 3 weeks later by massive hemobilia. The cause of haemorrhage was a pseudoaneurysm of a right hepatic artery branching off the superior mesenteric artery; this complication was successfully managed by one-stage angiographic embolization with full recovery of the patient.

  2. MR imaging of persistent primitive trigeminal artery

    International Nuclear Information System (INIS)

    The persistent trigeminal artery is the most common anomaly of the primitive carotid-vertebrobasilar anastomoses. We reviewed MR images and MR angiographies of 11 patients with primitive trigeminal artery. In 8 of the 11 cases, PTA were identified with conventional long TR spin-echo images. In 8 of 11 cases, a hypoplastic basilar trunk associated with PTA was seen on both MR images and MR angiographies. In 7 of 11 cases, a hypoplasia or agenesis of the ipsilateral posterior communicating artery was seen on MR angiographies. (author)

  3. Occipital Artery Pseudoaneurysm: A Rare Scalp Swelling

    OpenAIRE

    Nagpal, Nitin; Bhargava, Gopal Swaroop; Singh, Bhupinder

    2012-01-01

    Traumatic pseudoaneurysm occurring in face and temple is commonly reported to occur in superficial temporal artery, and so far only four cases have reported involvement of the occipital artery. We report a case of 25-year-old male patient presented to us with a pulsatile swelling in the occipital region following a trauma at the same site 5 years ago. A CT angiogram revealed the pseudoaneurysm of the left occipital artery and was surgically excised after ligation of proximal and distal parts ...

  4. Pulmonary Artery Agenesis: A Case Series

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    Meltem Ağca

    2015-04-01

    Full Text Available Pulmonary artery agenesis is a rare congenital abnormality in which atresia was encountered in the short segment of the right or left pulmonary arteries. It can be isolated or associated with cardiac abnormalities such as tetralogy of Fallot, septal defects or pulmonary stenosis.The majority of cases are diagnosed in childhood whereas some cases yield no symptoms until adulthood. We evaluated retrospectively 5 pulmonary artery agenesis cases diagnosed in our clinics between 1998-2010 with respect to the literature.

  5. ON WALL SHEAR STRESS OF ARTERY

    Institute of Scientific and Technical Information of China (English)

    Liu Zhao-rong; Liu Bao-yu; Qin Kai-rong

    2003-01-01

    In this paper, a method was proposed that the wall shear stress of artery could be determined by measuring the centerline axial velocity and radial motion of arterial wall simultaneously.The method is simple in application and can get higher precision when it is used to determine the shear stress of arterial wall in vivo.As an example, the shear stress distribution in periodic oscillatory flow of human carotid was calculated and discussed.The computed results show that the shear stress distribution at any given instant is almost uniform and will be zero at the centerline and tends to maximum at the vessel wall.

  6. Simulation of the human intracranial arterial tree.

    Science.gov (United States)

    Grinberg, Leopold; Anor, Tomer; Cheever, Elizabeth; Madsen, Joseph R; Karniadakis, George Em

    2009-06-13

    High-resolution unsteady three-dimensional flow simulations in large intracranial arterial networks of a healthy subject and a patient with hydrocephalus have been performed. The large size of the computational domains requires the use of thousands of computer processors and solution of the flow equations with approximately one billion degrees of freedom. We have developed and implemented a two-level domain decomposition method, and a new type of outflow boundary condition to control flow rates at tens of terminal vessels of the arterial network. In this paper, we demonstrate the flow patterns in the normal and abnormal intracranial arterial networks using patient-specific data. PMID:19414460

  7. Use of arterial conduit for arterial revascularization during liver and multivisceral transplantation

    Institute of Scientific and Technical Information of China (English)

    MA Yi; LI Qiang; YE Zhi-ming; ZHU Xiao-feng; HE Xiao-shun

    2011-01-01

    Background At present, revascularization is still one of the most critical technologies in orthotopic liver transplantation (OLT). Hepatic artery (HA) variations occur frequently in both donors and recipients. Moreover, there are always some pathological changes in the recipient hepatic artery. If handled improperly, it may cause complications after anastomosis.Therefore, arterial conduit could be used in primary OLT, re-OLT and multiple-OLT. This study aimed to investigate the indications, methods and techniques with usage of arterial conduit for HA revascularization during adult OLT.Methods We reviewed 1200 patients of consecutive OLTs performed during 2000-2009 in the First Affiliated Hospital of Sun Yat-sen University. Of these patients, 48 recipients with artery variations received HA revascularization with usage of arterial conduit and special postoperative managements. The indications, methods, techniques, and the managements of postoperative complications in adult OLT with usage of arterial conduit for HA revascularization were analyzed.Results In 48 cases with artery bypass, the arterial conduit were anastomosed between donor hepatic artery and recipient infrarenal aorta (n=32), between donor hepatic artery and recipient suprarenal aorta (n=10), and between donor upper abdominal organ cluster artery and recipient suprarenal aorta (n=6). The technique was applied in 4% (48/1200 cases) of the whole OLTs performed in the same period, and the patency rate of the conduits was 100%. Forty patients (83.3%) survived, and the average survival time was 3.9 years. Eight patients (16.7%) died (all due to tumor recurrence),while the average survival time was 1.2 years. All these patients have not experienced artery-related complications in their survival time.Conclusions When recipient HA has variations or pathological changes in OLT, the donor artery should be anastomosed to recipient abdominal aorta with an arterial conduit to achieve satisfactory outcomes

  8. Pedal arteries of monkeys, with special reference to the plantar metatarsal arteries.

    Directory of Open Access Journals (Sweden)

    Hinenoya,Hitoshi

    1987-12-01

    Full Text Available In the Japanese, Formosan and crab-eating monkeys, the dorsal metatarsal arteries and their lateral distal perforating branches were well developed and supplied, directly or via the catella plantaris distalis, the plantar digital arteries. In the black ape, the plantar digital arteries arose from the medial plantar artery. The plantar metatarsal arteries of these monkeys, including the black ape, arose from the catella plantaris proximalis or deep plantar arch and were classified into the superficial plantar metatarsal (sM, superficial plantar intermetatarsal (sI, deep plantar metatarsal (dM and deep plantar intermetatarsal (dI arteries in relation to the interosseous muscles and metatarsal bones. This classification largely coincides with that of the human hand and foot (Murakami, 1969, 1971 and the monkey hand (Nakai et al., 1987.

  9. Study of cystic artery by arteriography. Importance of previous cholecystography

    Energy Technology Data Exchange (ETDEWEB)

    Machado, G.O.

    An oral cholecystography previously to celiac and mesenteric arteriography is performed, in order to identify the cystic artery, in 42 patients with pancreatitis, according Seldinger technique. The cystic artery was identified in all the cases, the pattern being the outlet of the cystic artery from the right hepatic artery. Infusion pump and seriography were not used.

  10. Giant vertebral artery aneurysm in a child treated with endovascular parent artery occlusion and coil embolization

    OpenAIRE

    Hun-Soo Park; Ichiro Nakagawa; Takeshi Wada; Hiroyuki Nakagawa; Yasuo Hironaka; Kimihiko Kichikawa; Hiroyuki Nakase

    2014-01-01

    Background: Intracranial giant vertebral artery aneurysms are extremely rare in the pediatric population and are associated with significant morbidity and mortality. The present report describes a case of a pediatric patient with giant vertebral artery aneurysm who presented with intracranial mass effect. This patient was successfully treated with endovascular parent artery occlusion and coil embolization. Case Description: A 7-year-old girl presented with tetraparesis, ataxia, dysphagia,...

  11. The physiological impact of the nonlinearity of arterial elasticity in the ambulatory arterial stiffness index

    International Nuclear Information System (INIS)

    The ambulatory arterial stiffness index (AASI) is claimed to be a new estimator for arterial rigidity. It was recently defined as one minus the slope of the linear regression of systolic to diastolic ambulatory pressure during 24 h. Although several reports testify its clinical relevance, the explanation of how this new index is conceptually associated with arterial stiffness remains controversial. In this work we hypothesize that nonlinear arterial elasticity is behind AASI physiological principles. To that end, random number generators were used to emulate arterial cross-sectional area (CSA) during 24 h. Pressure values were calculated using linear and nonlinear elasticity models for rigid and compliant arteries. The AASI was calculated from simulated pressures and also analytically predicted for each model. Additionally, invasive aortic pressure and CSA were continuously measured in a conscious sheep during 24 h to test the nonlinear model. We found that analytical solutions agreed with simulation outcomes; for the nonlinear model, the AASI was higher in rigid arteries with respect to compliant arteries (0.51 versus 0.38) and the linear model systematically predicted AASI = 0. For in vivo pressure measurements, AASI was 0.31. Using the measured pulsatile CSA and an estimation of the elastic constant for the nonlinear model, the AASI was accurately predicted with errors below 5%. We conclude that the AASI is higher in stiffer arteries due to the nonlinear behavior of the arterial wall. With a nonlinear arterial function, the slope of the linear regression of diastolic to systolic pressures during 24 h depends on the product of an elastic constant by the pulsatile CSA. As the elastic constant dominates the product, the reported associations between the AASI and arterial stiffness indices now have a consistent explanation

  12. Evaluación del Poder Antioxidante de Fracciones de Aceite Esencial Crudo de Schinus molle L. obtenidas por Destilación al Vacío Evaluation of the Antioxidant Power of Fractions of Schinus molle L. Essential Oil obtained by Vacuum Distillation

    Directory of Open Access Journals (Sweden)

    María S Guala

    2009-01-01

    Full Text Available Se han evaluado las características antioxidantes del aceite esencial crudo de Schinus molle L. (molle, aguaribay, y se han comparado con las fracciones del mismo aceite obtenidas por destilación al vacío. Las muestras obtenidas se analizaron mediante cromatografía GS/MS, y se les determinó la eficiencia antioxidante utilizando el método DPPH, 2,2 Diphenyl 1 picrylhydrazyl. La fracción más pesada contiene mayor cantidad de Terpinen-4-ol y Germacreno D, compuestos colectores de radicales libres. Por lo tanto, la fracción más pesada es la que tiene mayor poder antirradical.The antioxidant characteristics of the Schinus molle L (molle, aguaribay raw essential oil were evaluated and compared with different cuts from the same oil obtained by vacuum distillation. The samples were analysed using GS/MS chromatography and the antioxidant efficiency was determined using the DPPH method, 2.2 Diphenyl 1 picrylhydrazyl. An analysis of the results we may conclude that the fraction is the heaviest it has greater power antiradical. The results show that the heaviest fraction contains higher concentration of Terpinen-4-ol and Germacreno D, compounds that are collectors of free radicals. Therefore, the heaviest fraction has greater antiradical power.

  13. Congenital absence of the internal carotid artery and the basilar artery with persistent trigeminal artery associated with coarctation of the aorta

    Energy Technology Data Exchange (ETDEWEB)

    Jaeger, H.J.; Mehring, U.M.; Gissler, H.M.; Mathias, K.D. [Dept. of Diagnostic Radiology, Staedtische Kliniken Dortmund (Germany); Dept. of Radiology and MicroTherapy, Univ. of Witten/Herdecke (Germany)

    2000-11-01

    We report a case of congenital absence of the cervical and petrous part of the left internal carotid artery, the middle and proximal part of the basilar artery, and the V4 segment of the left vertebral artery associated with a left persistent trigeminal artery and a coarctation of the aorta. The left cerebral vessels are supplied via the anterior communicating artery and the left persistent trigeminal artery. The coexisting coarctation of the aorta led to a subclavian steal phenomenon. The alteration of the cerebral hemodynamics has to be taken in consideration when performing cerebral angiography and surgical correction in such a case. (orig.)

  14. Congenital absence of the internal carotid artery and the basilar artery with persistent trigeminal artery associated with coarctation of the aorta

    International Nuclear Information System (INIS)

    We report a case of congenital absence of the cervical and petrous part of the left internal carotid artery, the middle and proximal part of the basilar artery, and the V4 segment of the left vertebral artery associated with a left persistent trigeminal artery and a coarctation of the aorta. The left cerebral vessels are supplied via the anterior communicating artery and the left persistent trigeminal artery. The coexisting coarctation of the aorta led to a subclavian steal phenomenon. The alteration of the cerebral hemodynamics has to be taken in consideration when performing cerebral angiography and surgical correction in such a case. (orig.)

  15. Intriguing variations of the tibial arteries and their clinical implications

    Directory of Open Access Journals (Sweden)

    Jelev L

    2011-03-01

    Full Text Available Unusual course and branching pattern of the tibial arteries were discovered during routine anatomical dissection of the right lower extremity of a 61-year-old female cadaver. The arteries of the crural region arose from the popliteal artery, as usual. However, the anterior tibial artery was hypoplastic and supplying the anterior calf muscles ended above the ankle joint. Instead, the posterior tibial artery gave off a large anterior branch, which crossed the lowest portion of the interosseous membrane and prolonged as the most distal continuation of the anterior tibial artery –the dorsalis pedis artery. The rest of the posterior tibial artery continued its course distally and divided into the usual medial and lateral plantar arteries. We briefly review the reported variations of the tibial arteries and discussed their clinical relevance.

  16. A Case of Incomplete Central Retinal Artery Occlusion Associated with Short Posterior Ciliary Artery Occlusion

    Directory of Open Access Journals (Sweden)

    Shinji Makino

    2013-01-01

    Full Text Available To our knowledge, incomplete central retinal artery occlusion associated with short posterior ciliary artery occlusion is extremely rare. Herein, we describe a case of a 62-year-old man who was referred to our hospital with of transient blindness in his right eye. At initial examination, the patient’s best-corrected visual acuity was 18/20 in the right eye. Fundus examination showed multiple soft exudates around the optic disc and mild macular retinal edema in his right eye; however, a cherry red spot on the macula was not detected. Fluorescein angiography revealed delayed dye inflow into the nasal choroidal hemisphere that is supplied by the short posterior ciliary artery. The following day, the patient’s visual acuity improved to 20/20. Soft exudates around the optic disc increased during observation and gradually disappeared. His hemodynamic parameters revealed subclavian steal syndrome as examined by cervical ultrasonography and digital subtraction angiography. We speculate that his transient blindness was due to ophthalmic artery spasms. In this particular case, spasms of the ophthalmic artery and occlusion of the short posterior ciliary artery occurred simultaneously. As the short posterior ciliary artery branches from the ophthalmic artery, the anatomical location of the lesion might be near the branching of both arteries.

  17. The new technique of using the epigastric arteries in renal transplantation with multiple renal arteries

    Directory of Open Access Journals (Sweden)

    Mohammad Ali Amirzargar

    2013-01-01

    Full Text Available The most common anatomic variant seen in the donor kidneys for renal transplantation is multiple renal arteries (MRA, which can cause an increased risk of complications. We describe the long-term outcomes of 16 years of experience in 76 kidney transplantations with MRAs. In a new reconstruction technique, we remove arterial clamps after anastomosing the donor to the recipient′s main renal vessels, which cause backflow from accessory arteries to prevent thrombosis. By this technique, we reduce the ischemic times as well as the operating times. Both in live or cadaver donor kidneys, lower polar arteries were anastomosed to the inferior epigastric artery and upper polar arteries were anastomosed to the superior epigastric arteries. Injection of Papaverine and ablation of sympathic nerves of these arteries dilate and prevent them from post-operative spasm. Follow-up DTPA renal scan in all patients showed good perfusion and function of the transplanted kidney, except two cases of polar arterial thrombosis. Mean creatinine levels during at least two years of follow-up remained acceptable. Patient and graft survival were excellent. No cases of ATN, hypertension, rejection and urologic complications were found. In conclusion, this technique can be safely and successfully utilized for renal transplantation with kidneys having MRAs, and may be associated with a lower complication rate and better graft function compared with the existing techniques.

  18. Recanalization of superficial femoral artery by retrograde approach via popliteal artery

    International Nuclear Information System (INIS)

    To recanalize the occlusive lesion of superficial femoral artery at origin site by retrograde approach via popliteal artery. 15 patients, who were poor surgical candidates due to coronary artery disease and who had severe occlusive lesion of superficial femoral artery close to its origin with good distal runoffs to popliteal artery, were selected. Patients were all men and range of age were from 53 years to 66 years (mean age: 63 years). Range of lesion length were from 15 cm to 30 cm (mean length: 22.4 cm). Localization of popliteal artery was done with Doppler stethoscope or 'road-map' DSA. The method of recanalization were transluminal endarterectomy catheter (TEC), TEC and angioplasty, thrombolysoangioplasty (TLA). Retrograde puncture of popliteal artery was done in 15 patients successfully. TEC and PTA was performed in 9 patients, TEC only in 2 patients, and TLA and PTA in 2 patients. During the follow-up period of 5 months to 2 years reocclusion did not occur in 10 patients except for 1 patient with poor cardiac output in whom it occurred 1 day later. Remained 4 patients were lost in follow up. Any neurologic or vascular complication did not occur. Retrograde approach of superficial femoral artery via popliteal artery in patients with difficult vascular intervention by common method provides a useful, alternative recanalization method

  19. Recanalization of superficial femoral artery by retrograde approach via popliteal artery

    Energy Technology Data Exchange (ETDEWEB)

    Kim, Jae Kyu; Kim, Hyung Kil; Yun, Ung; Seo, Jeong Jin; Kang, Heoung Keun [Chonnam University Medical School, Kwangju (Korea, Republic of)

    1995-09-15

    To recanalize the occlusive lesion of superficial femoral artery at origin site by retrograde approach via popliteal artery. 15 patients, who were poor surgical candidates due to coronary artery disease and who had severe occlusive lesion of superficial femoral artery close to its origin with good distal runoffs to popliteal artery, were selected. Patients were all men and range of age were from 53 years to 66 years (mean age: 63 years). Range of lesion length were from 15 cm to 30 cm (mean length: 22.4 cm). Localization of popliteal artery was done with Doppler stethoscope or 'road-map' DSA. The method of recanalization were transluminal endarterectomy catheter (TEC), TEC and angioplasty, thrombolysoangioplasty (TLA). Retrograde puncture of popliteal artery was done in 15 patients successfully. TEC and PTA was performed in 9 patients, TEC only in 2 patients, and TLA and PTA in 2 patients. During the follow-up period of 5 months to 2 years reocclusion did not occur in 10 patients except for 1 patient with poor cardiac output in whom it occurred 1 day later. Remained 4 patients were lost in follow up. Any neurologic or vascular complication did not occur. Retrograde approach of superficial femoral artery via popliteal artery in patients with difficult vascular intervention by common method provides a useful, alternative recanalization method.

  20. Left bronchial artery arising from a replaced left hepatic artery in a patient with massive hemoptysis

    Energy Technology Data Exchange (ETDEWEB)

    Khil, Eun Kyung; Lee, Jae Myung [Dept. of Radiology, Soonchunhyang University College of Medicine, Bucheon Hospital, Bucheon (Korea, Republic of)

    2015-09-15

    A 70-year-old man with a 3-year history of bronchiectasis presented with massive hemoptysis that had lasted for 3 days. In our attempt to perform bronchial artery embolization, upper abdominal angiography was required to locate the left bronchial artery, which in this case was of anomalous origin, arising from a replaced left hepatic artery, which arose from the left gastric artery-a very unusual anatomical variant. We performed embolization with polyvinyl alcohol particles, and the patient's symptoms resolved completely, with no additional complications after conservative treatment.

  1. Renal Arterial Network Structure by Computed Tomography, and Nephron-Arterial Interactions

    DEFF Research Database (Denmark)

    2015-01-01

    , with afferent arterioles originating from all arterial structures, including arcuate arteries. The modeling component has 2 novel features: a probability based vascular tree based on the data from the CT images, and a network of arteries supplying several simple whole nephron models coupled electrotonically......Our goal is to predict interactions that develop among nephrons and between nephrons and the arterial network that supports them. We have developed a computationally simple but physiologically-based mathematical model of the kidney vascular tree to study renal autoregulation in ensembles....... The network model predicts dynamical aspects of vascular pressure drops and nephron self-sustained cooperative dynamics....

  2. Atypical presentation of popliteal artery entrapment syndrome: involvement of the anterior tibial artery.

    Science.gov (United States)

    Bou, Steven; Day, Carly

    2014-11-01

    Popliteal artery entrapment syndrome (PAES) is a rare condition that should be suspected in a young patient with exertional lower extremity pain. We report the case of an 18-year-old female volleyball player with bilateral exertional lower extremity pain who had been previously diagnosed with tendinitis and periostitis. Diagnostic studies showed entrapment of the left popliteal artery and the left anterior tibial artery. To our knowledge, there has only been 1 previous report of anterior tibial artery involvement in PAES. PMID:24880061

  3. Transposition of the great arteries

    Directory of Open Access Journals (Sweden)

    Castela Eduardo

    2008-10-01

    Full Text Available Abstract Transposition of the great arteries (TGA, also referred to as complete transposition, is a congenital cardiac malformation characterised by atrioventricular concordance and ventriculoarterial (VA discordance. The incidence is estimated at 1 in 3,500–5,000 live births, with a male-to-female ratio 1.5 to 3.2:1. In 50% of cases, the VA discordance is an isolated finding. In 10% of cases, TGA is associated with noncardiac malformations. The association with other cardiac malformations such as ventricular septal defect (VSD and left ventricular outflow tract obstruction is frequent and dictates timing and clinical presentation, which consists of cyanosis with or without congestive heart failure. The onset and severity depend on anatomical and functional variants that influence the degree of mixing between the two circulations. If no obstructive lesions are present and there is a large VSD, cyanosis may go undetected and only be perceived during episodes of crying or agitation. In these cases, signs of congestive heart failure prevail. The exact aetiology remains unknown. Some associated risk factors (gestational diabetes mellitus, maternal exposure to rodenticides and herbicides, maternal use of antiepileptic drugs have been postulated. Mutations in growth differentiation factor-1 gene, the thyroid hormone receptor-associated protein-2 gene and the gene encoding the cryptic protein have been shown implicated in discordant VA connections, but they explain only a small minority of TGA cases. The diagnosis is confirmed by echocardiography, which also provides the morphological details required for future surgical management. Prenatal diagnosis by foetal echocardiography is possible and desirable, as it may improve the early neonatal management and reduce morbidity and mortality. Differential diagnosis includes other causes of central neonatal cyanosis. Palliative treatment with prostaglandin E1 and balloon atrial septostomy are usually

  4. Arterial and Peripheral Sympathectomy for Vasospastic Disease

    Medline Plus

    Full Text Available Arterial and Peripheral Sympathectomy for Vasospastic Disease Click Here to view the BroadcastMed, Inc. Privacy Policy and Legal Notice © 2016 BroadcastMed, Inc. All rights reserved.

  5. Oxygen transfer in human carotid artery bifurcation

    Institute of Scientific and Technical Information of China (English)

    Z.G.Zhang; Y.B.Fan; X.Y.Deng

    2007-01-01

    Arterial bifurcations are places where blood flow may be disturbed and slow recirculation flow may occur.To reveal the correlation between local oxygen transfer and atherogenesis, a finite element method was employed to simulate the blood flow and the oxygen transfer in the human carotid artery bifurcation. Under steady-state flow conditions, the numerical simulation demonstrated a variation in local oxygen transfer at the bifurcation, showing that the convective condition in the disturbed flow region may produce uneven local oxygen transfer at the blood/wall interface.The disturbed blood flow with formation of slow eddies in the carotid sinus resulted in a depression in oxygen supply to the arterial wall at the entry of the sinus, which in turn may lead to an atherogenic response of the arterial wall, and contribute to the development of atherosclerotic stenosis there.

  6. Radiation-induced coronary artery disease

    International Nuclear Information System (INIS)

    This report describes three patients who developed myocardial infarction at an untimely age, 4 to 12 years after radiation therapy for Hodgkin's disease. These cases lend credence to the cause and effect relation of such therapy to coronary artery disease

  7. TECAB - Totally Endoscopic Coronary Artery Bypass

    Medline Plus

    Full Text Available ... the sternum and cannulate the aorta and the right atrium. In this operation, since we are not ... exactly perpendicular to the camera port here. All right. The femoral artery will be used to give ...

  8. TECAB - Totally Endoscopic Coronary Artery Bypass

    Medline Plus

    Full Text Available ... This usually leads us to the fifth intercostal space here on the anterior axillary node. This is ... for the peripheral arteries. Okay. Again, fifth intercostal space, anterior axillary line is where we are with ...

  9. Coronary Artery Disease - Coronary Heart Disease

    Science.gov (United States)

    ... Tools & Resources Stroke More Coronary Artery Disease - Coronary Heart Disease Updated:May 20,2016 View an animation of ... call 9-1-1. Risk Factors and Coronary Heart Disease Major risk factors that can't be changed ...

  10. Cervical artery dissection following a turbulent flight.

    LENUS (Irish Health Repository)

    Quinn, Colin

    2012-01-31

    BACKGROUND: Cervical artery dissection is a common cause of stroke in young patients without vascular risk factors and may affect the carotid or vertebral arteries. The risk of spontaneous dissection is higher in those with genetic predisposing factors while other cases may be precipitated by an event involving head or neck movement or associated with direct neck trauma. CASE REPORT: We present the case of a previously well young woman with a history of migraine who developed internal carotid artery dissection following a turbulent short-haul commercial flight while restrained using a seatbelt. DISCUSSION: We propose that repetitive flexion-hyperextension neck movements encountered during the flight were the most likely precipitant of carotid artery dissection in this case and review the therapeutic options available.

  11. Ischemic stroke: carotid and vertebral artery disease.

    Science.gov (United States)

    Vilela, P; Goulão, A

    2005-03-01

    Ischemic strokes may have distinct aetiologies, including several different intrinsic arterial pathological disorders. The diagnosis and understanding of these arterial diseases is critical for the correct management of stroke as different treatment approaches are undertaken according to the aetiology. Atherosclerosis is by far the most common arterial disease among adults, and other pathological processes include arterial dissection, small vessel disease, inflammatory and non-inflammatory vasculopathy and vasomotor disorders. In children, there are several vasculopathies responsible for vaso-occlusive disease such as sickle-cell anemia, acute regressive angiopathy and Moya-Moya disease, neurofibromatosis, dissections, vasculitis associated with intracranial and systemic infections. An overview of the major carotid and vertebral pathological diseases responsible for ischemic stroke in adults and children, highlighting the accuracy of the different imaging modalities for its diagnosis and the imaging appearance of these diseases, is given. PMID:15657789

  12. Ischemic stroke: carotid and vertebral artery disease

    International Nuclear Information System (INIS)

    Ischemic strokes may have distinct aetiologies, including several different intrinsic arterial pathological disorders. The diagnosis and understanding of these arterial diseases is critical for the correct management of stroke as different treatment approaches are undertaken according to the aetiology. Atherosclerosis is by far the most common arterial disease among adults, and other pathological processes include arterial dissection, small vessel disease, inflammatory and non-inflammatory vasculopathy and vasomotor disorders. In children, there are several vasculopathies responsible for vaso-occlusive disease such as sickle-cell anemia, acute regressive angiopathy and Moya-Moya disease, neurofibromatosis, dissections, vasculitis associated with intracranial and systemic infections. An overview of the major carotid and vertebral pathological diseases responsible for ischemic stroke in adults and children, highlighting the accuracy of the different imaging modalities for its diagnosis and the imaging appearance of these diseases, is given. (orig.)

  13. TECAB - Totally Endoscopic Coronary Artery Bypass

    Medline Plus

    Full Text Available ... endothoracic fascia, as we call it. This is tissue covering that artery, and this is all done ... cleaner as open surgery because there is less tissue trauma and less bleeding, and we also like ...

  14. TECAB - Totally Endoscopic Coronary Artery Bypass

    Medline Plus

    Full Text Available ... artery. Yes. Okay. And we see some fat calcium plaque here on the vessel. This part is ... ancient Greek, to make an opening between two channels. So I think we are almost ready to ...

  15. Angiography in acute mesenteric arterial insufficiency

    International Nuclear Information System (INIS)

    The angiographic findings in 31 cases of acute mesenteric arterial insufficiency are presented. In 22 cases organic occlusions, in 9 vasoconstriction alone, were found. Angiography aids definitely in the diagnosis and planning of the treatment of this serious condition. (Auth.)

  16. Evaluation of Peripheral Arterial Disease in Prediabetes

    Directory of Open Access Journals (Sweden)

    Elham Faghihimani

    2014-01-01

    Conclusions: Peripheral arterial disease is common in asymptomatic diabetes and prediabetes patients. Management of hypertensive prediabetes patients and early detection of PAD in this group as well as in asymptomatic patients is important.

  17. TECAB - Totally Endoscopic Coronary Artery Bypass

    Medline Plus

    Full Text Available ... Artery Bypass” grafting. Let me first introduce our team here. My name is Johannes Bonatti. I’m ... the anesthesia side, Patrick Odonker, leading the anesthesia team, working with Teresa Nemitz. It is a special ...

  18. The arterial load in pulmonary hypertension

    Directory of Open Access Journals (Sweden)

    A. Vonk-Noordegraaf

    2010-09-01

    Full Text Available The anatomical differences between the pulmonary and systemic arterial system are the main cause of the difference in distribution of compliance. In the pulmonary arterial system compliance is distributed over the entire arterial system, and stands at the basis of the constancy of the RC-time. This distribution depends on the number of peripheral vessels, which is ∼8–10 times more in the pulmonary system than the systemic tree. In the systemic arterial tree the compliance is mainly located in the aorta (80% of total compliance in thoracic-abdominal aorta. The constant RC-time in the pulmonary bed results in proportionality of systolic and diastolic pressure with mean pressure and, in turn, in the constant ratio of oscillatory and mean power.

  19. TECAB - Totally Endoscopic Coronary Artery Bypass

    Medline Plus

    Full Text Available ... 10 minutes. Okay. Good. We’re in the safety zone. Okay. One important things is that the ... on the coronary artery, and I just, for safety reasons, would like to keep this part. We’ ...

  20. Who Needs Coronary Artery Bypass Grafting?

    Science.gov (United States)

    ... Rehabilitation Coronary Heart Disease Heart Attack Heart Surgery Percutaneous Coronary Intervention Send a link to NHLBI to someone by ... coronary arteries that can't be treated with percutaneous coronary intervention (PCI), also known as coronary angioplasty. Your doctor ...

  1. TECAB - Totally Endoscopic Coronary Artery Bypass

    Science.gov (United States)

    ... of the patient’s artery is, could be near occlusive, and we want to continue profusing the leg ... It’s very helpful. It’s like a pilot is training in a simulator. The postage is also very ...

  2. Ischemic stroke: carotid and vertebral artery disease

    Energy Technology Data Exchange (ETDEWEB)

    Vilela, P.; Goulao, A. [Hospital Garcia de Orta, Servico de Neurorradiologia, Almada (Portugal)

    2005-03-01

    Ischemic strokes may have distinct aetiologies, including several different intrinsic arterial pathological disorders. The diagnosis and understanding of these arterial diseases is critical for the correct management of stroke as different treatment approaches are undertaken according to the aetiology. Atherosclerosis is by far the most common arterial disease among adults, and other pathological processes include arterial dissection, small vessel disease, inflammatory and non-inflammatory vasculopathy and vasomotor disorders. In children, there are several vasculopathies responsible for vaso-occlusive disease such as sickle-cell anemia, acute regressive angiopathy and Moya-Moya disease, neurofibromatosis, dissections, vasculitis associated with intracranial and systemic infections. An overview of the major carotid and vertebral pathological diseases responsible for ischemic stroke in adults and children, highlighting the accuracy of the different imaging modalities for its diagnosis and the imaging appearance of these diseases, is given. (orig.)

  3. TECAB - Totally Endoscopic Coronary Artery Bypass

    Medline Plus

    Full Text Available ... Artery Bypass June 10, 2009 Welcome to the University of Maryland Medical Center in Baltimore, where you ... to Maryland. Welcome to Baltimore. Welcome to the University of Maryland Medical Center here in OR-26. ...

  4. Atherosclerosis and the internal mammary arteries

    International Nuclear Information System (INIS)

    One hundred and fifty patients with coronary artery disease (CAD), 14 (9.3%) of whom had coexisting peripheral vascular disease, underwent bilateral internal mammary arteriography to study the incidence and extent of atherosclerosis in these vessels. Significant atherosclerosis of the internal mammary arteries (IMAs) was present in three patients (2%), of whom one had coexisting peripheral vascular disease. Lesions in the IMAs were found either proximally, close to the origin or distally, around the terminal bifurcation. Six of the 14 patients with peripheral vascular disease (4% of total subjects) had significant atherosclerosis of the brachiocephalic arteries. Atherosclerotic involvement of the IMA is very unusual and rarely interferes with the use of these vessels for coronary bypass. More common, however, is atherosclerosis of the subclavian arteries, a contraindication for IMA grafting if the lesion is proximal to the IMA origin. (orig.)

  5. Arterial segmental vasoconstriction in hypercholesterolaemic patients

    International Nuclear Information System (INIS)

    Regular, wave-like constriction in medium-sized arteries, arterial segmental vasoconstriction (ASV), has been observed at arteriography and described by many authors. We found ASV in arteriograms of the superficial femoral artery in 13 of 107 hypercholesterolaemic patients, enrolled in the Probucol Quantitative Regression Swedish Trial (PQRST). The arteriograms were digitized and studied with a quantitative computer-assisted technique. The frequency of ASV was higher than has been reported earlier in clinical materials, possibly because of an increased vasoreactivity in hypercholesterolaemia, as recently observed experimentally. The ASV patients were, on average, younger, had lower blood pressure and less atherosclerosis, than the non-ASV patients. ASV was not found in any of the 19 patients in the material who either had symptoms of peripheral vascular disease or arteriographically verified arterial occlusions. No significant correlations with smoking habits or serum cholesterol levels were found. A computer-based index of ASV and measurement of ASV wavelength are discussed. (orig.)

  6. Angiographic Evaluation of Popliteal Artery Trauma

    Directory of Open Access Journals (Sweden)

    H.Gh. Nosratinia

    2007-05-01

    Full Text Available Background and Objective: Popliteal artery injuries are uncommon in developed countries, but it may be common in our country and is associated with poor rates of limb salvage, as well as high levels of morbid-ity. The aim of the present study was to determine the causes of popliteal artery injuries. Materials and Methods: Twenty patients with pop-liteal artery injuries during 3.5 years were studied by angiography in Imam Khomeini Hospital of Tabriz. Results: There were 18 male and two female patients with a median age of 34/00±15/68 years (range 15 – 70 years. The most common cause of trauma in this study was traffic accidents and the most common in-jury was complete occlusion. Conclusion: Popliteal artery injuries are more com-mon in our country and the most common cause is blunt trauma, especially motorcycle accidents.

  7. TECAB - Totally Endoscopic Coronary Artery Bypass

    Medline Plus

    Full Text Available ... is pictures of the coronary arteries, by injecting dye into them, which we normally do in a ... Okay. Now we’re going to fill with dye and we’re going to take our picture. ...

  8. Types of Coronary Artery Bypass Grafting

    Science.gov (United States)

    ... best option for you based on your needs. Traditional Coronary Artery Bypass Grafting Traditional CABG is used when at least one major ... Grafting This type of CABG is similar to traditional CABG because the chest bone is opened to ...

  9. Aortic aneurysm secondary to umbilical artery catheterization

    International Nuclear Information System (INIS)

    A 14-month-girl presented with an asymptomatic posterior mediastinal mass. She had a history of prematurity, umbilical artery catheterization, and sepsis. The diagnosis of aortic aneurysm was made by dynamic computed tomography. The aneurysm was successfully resected. (orig.)

  10. Early Arterial Ischemic Stroke in Premature Infants

    Directory of Open Access Journals (Sweden)

    J Gordon Millichap

    2008-05-01

    Full Text Available Presentation, clinical course, and outcomes for 23 premature children with arterial ischemic stroke before 44 weeks gestational age are reported from Riley Hospital for Children, Indianapolis, IN.

  11. MORPHOMETRIC STUDY OF THE RIGHT CORONARY ARTERY

    OpenAIRE

    El Sayed S. Atta-Alla; Ezzat A. El Sawa; Ahmed E.S. Atta-Alla; Ezdihar A. El Baassiri; Khodor Haidar Hassan

    2015-01-01

    Introduction: The anatomy of the coronary arteries is fascinating and most varied. The aim of the present work was to study the gross anatomy of the right coronary artery (RCA) regarding its importance for interventional cardiologists and cardiac surgeons. Materials and Methods: The material of the present study included 30 preserved hearts obtained from the dissecting rooms of anatomy departments, Faculty of Medicine, Beirut Arab University and Alexandria University. Results: Present s...

  12. Computer simulation of the carotid artery

    OpenAIRE

    Santos, A.; Sousa, L. de; Tavares, J.; Santos, R.; Castro, P.; Azevedo, E.

    2012-01-01

    Background: Disturbed flow conditions at the bifurcation of common carotid artery and proximal internal carotid artery plays an important role in the development of local atherosclerotic plaques, which are important causes of stroke. Being able to build 3D models based on ultrasound imaging can improve diagnostic assessment and support interventions like endarterectomy or carotid stenting. Our aim was to describe a carotid segmentation algorithm to build these 3D models.Methods: We developed ...

  13. Mammographically Detectable Breast Arterial Calcification and Atherosclerosis

    OpenAIRE

    Shah, Neeraj; Chainani, Vinod; Delafontaine, Patrice; Abdo, Abir; Lafferty, James; Rafeh, Nidal Abi

    2014-01-01

    Breast arterial calcification (BAC), observed as an incidental finding on screening mammograms, represents degenerative calcific changes occurring in the mammary arteries, with increasing age. The aim of this review is to discuss relevant literature examining relation between BAC and atherosclerosis. After a thorough literature search, in OVID and PubMed, 199 studies were identified, of which 25 were relevant to our review. Data were abstracted from each study and statistical analysis was don...

  14. Internal carotid artery dissection following rigid esophagoscopy

    OpenAIRE

    Ricchetti, Alma Paola; Becker, Minerva; Dulguerov, Pavel

    1999-01-01

    A case of internal carotid artery dissection that developed after rigid esophagoscopy is described. The diagnosis was suggested by the clinical presentation and confirmed by the findings of radiological examinations. Internal carotid artery dissection is a rare condition of controversial etiology. Most frequently, the cause is unknown and the condition is termed idiopathic. A few cases have occurred after forceful cervical extensions and manipulations. The pathogenesis in our case is uncertai...

  15. Cervical Artery Dissection: Emerging Risk Factors

    OpenAIRE

    Micheli, S.; Paciaroni, M; Corea, F; Agnelli, G.; M. Zampolini; Caso, V

    2010-01-01

    Cervical artery dissection (CAD) represents an increasingly recognized cause of stroke and the most common cause of ischemic stroke in young adults. Many factors have been identified in association with CAD such as primary disease of arterial wall (fibrodysplasia) and other non-specific diseases related to CAD like Ehlers Danlos-syndrome IV, Marfan’s syndrome, vessel tortuosity. Moreover, an underlying arteriopathy which could be in part genetically determined, has been suspected. The rule of...

  16. Splenic artery aneurysm rupture in pregnancy

    International Nuclear Information System (INIS)

    Rupture of a splenic artery aneurysm, commonly associated with pregnancy is a rare and catastrophic event. We report here a case of a patient in her second pregnancy who presented with a short history of left hypochondriac and epigastric pain, followed by collapse at 32 weeks gestation. Sudden fetal distress lead to emergency caesarean delivery when splenic artery aneurysm rupture was diagnosed. With timely involvement of multidisciplinary personnel both mother and baby survived and had an uneventful recovery. (author)

  17. An Update on Pulmonary Arterial Hypertension

    OpenAIRE

    Wapner, Joanna; Matura, Lea Ann

    2015-01-01

    Pulmonary arterial hypertension (PAH) is a progressive disease that ultimately leads to right heart failure and death. PAH is defined as a mean pulmonary arterial pressure ≥ 25 mm Hg with a pulmonary capillary wedge pressure ≤ 15 mm Hg at rest. The diagnosis of PAH is one of exclusion; diagnostics include an extensive history, serology, chest radiograph, pulmonary function tests, ventilation/perfusion scan, transthoracic echocardiogram, and right heart catheterization. Treatment and care of p...

  18. Interesting Basis of Vertebrobasilar Arterial Territory

    OpenAIRE

    Kavian Ghandehari; Kosar Ghandehari

    2012-01-01

    Background: Vertebrobasilar arterial territory nourishes one-quarter of human brain. It constitutes some vital and strategic parts of the central nervous system.Methods: A number of keywords (vertebral, basilar, artery, and territory) were searched in MEDLINE (Ovid and PubMed) as well as Google, ProQuest, Scopus, Cochrane Library, and Science Direct online electronic search engines. Only articles containing all keywords were included. The final search was performed on October, 1, 2012. We als...

  19. Branch retinal artery occlusion in Susac's syndrome

    Directory of Open Access Journals (Sweden)

    Ricardo Evangelista Marrocos de Aragão

    2015-02-01

    Full Text Available Susac's syndrome is a rare disease attribuited to a microangiopathy involving the arterioles of the cochlea, retina and brain. Encefalopathy, hearing loss, and visual deficits are the hallmarks of the disease. Visual loss is due to multiple, recurrent branch arterial retinal occlusions. We report a case of a 20-year-old women with Susac syndrome presented with peripheral vestibular syndrome, hearing loss, ataxia, vertigo, and vision loss due occlusion of the retinal branch artery.

  20. Conduits for Coronary Bypass: Internal Thoracic Artery

    OpenAIRE

    Barner, Hendrick B.

    2012-01-01

    This second report in the series on coronary artery bypass presents the authors experience and personal views on the internal thoracic artery (ITA) which date to 1966. There has been a very gradual evolution in the acceptance of this conduit which was initially compared with the saphenous vein and viewed as an improbable alternative to it. As is common with concepts and techniques which are 'outside the box' there was skepticism and criticism of this new conduit which was more difficult and t...

  1. Physical inactivity and arterial stiffness in COPD

    OpenAIRE

    Sievi NA; Franzen D; Kohler M.; Clarenbach CF

    2015-01-01

    Noriane A Sievi,1 Daniel Franzen,1 Malcolm Kohler,1,2 Christian F Clarenbach1 1Division of Pulmonology, University Hospital of Zurich, 2Zurich Center for Integrative Human Physiology, University of Zurich, Zurich, Switzerland Background: Arterial stiffness is an important predictor of cardiovascular risk besides classic cardiovascular risk factors. Previous studies showed that arterial stiffness is increased in patients with COPD compared to healthy controls and exercise training may reduce ...

  2. PERIPHERAL ARTERIAL DISEASE IN THE LEG

    OpenAIRE

    Nair P; Justin; Vinu C

    2014-01-01

    INTRODUCTION: Peripheral arterial disease (PAD) is a condition characterized by atherosclerotic occlusive disease of the lower extremities. While PAD is a major risk factor for lower-extremity amputation, it is also accompanied by a high likelihood for symptomatic cardiovascular and cerebrovascular disease. Atherosclerosis accounts for more than 90% of cases of PAD, and uncommon vascular syndromes account for the remaining 10%. The femoral and popliteal arteries are affected in 80% to 90% of ...

  3. Changing blood flow in peripheral artery disease

    OpenAIRE

    Borne, P. van den

    2014-01-01

    Cardiovascular disease (CVD) is the leading cause of death globally and it is predicted this will remain to increase throughout 2030 to an estimated 23,3 million patients per year. This trend is accompanied by a steep increase in healthcare costs, making it a great health and socio-economic burden. The underlying pathology of CVD is often atherosclerosis, characterized by the development of atherosclerotic plaques in middle- and larger-sized arteries. Peripheral artery disease (PAD) is a dise...

  4. Elastomeric PGS scaffolds in arterial tissue engineering.

    Science.gov (United States)

    Lee, Kee-Won; Wang, Yadong

    2011-01-01

    Cardiovascular disease is one of the leading cause of mortality in the US and especially, coronary artery disease increases with an aging population and increasing obesity. Currently, bypass surgery using autologous vessels, allografts, and synthetic grafts are known as a commonly used for arterial substitutes. However, these grafts have limited applications when an inner diameter of arteries is less than 6 mm due to low availability, thrombotic complications, compliance mismatch, and late intimal hyperplasia. To overcome these limitations, tissue engineering has been successfully applied as a promising alternative to develop small-diameter arterial constructs that are nonthrombogenic, robust, and compliant. Several previous studies have developed small-diameter arterial constructs with tri-lamellar structure, excellent mechanical properties and burst pressure comparable to native arteries. While high tensile strength and burst pressure by increasing collagen production from a rigid material or cell sheet scaffold, these constructs still had low elastin production and compliance, which is a major problem to cause graft failure after implantation. Considering these issues, we hypothesized that an elastometric biomaterial combined with mechanical conditioning would provide elasticity and conduct mechanical signals more efficiently to vascular cells, which increase extracellular matrix production and support cellular orientation. The objective of this report is to introduce a fabrication technique of porous tubular scaffolds and a dynamic mechanical conditioning for applying them to arterial tissue engineering. We used a biodegradable elastomer, poly (glycerol sebacate) (PGS) for fabricating porous tubular scaffolds from the salt fusion method. Adult primary baboon smooth muscle cells (SMCs) were seeded on the lumen of scaffolds, which cultured in our designed pulsatile flow bioreactor for 3 weeks. PGS scaffolds had consistent thickness and randomly distributed macro

  5. Anterior Tibial Artery Pseudoaneurysm: Case Report

    Directory of Open Access Journals (Sweden)

    Funda Tor

    2012-06-01

    Full Text Available The aneurysmsatic changes of the infrapopliteal arteries are rarely seen. They are pseudoaneurysms rather than true aneursyms. The most important cause of them is trauma. There is not a standart treatment for infrapopliteal aneursyms. In this study, we have evaluated a case operated for anterior tibial artery pseudoaneurysm developed after penetrant trauma and diagnosed two weeks later. [Cukurova Med J 2012; 37(3.000: 172-175

  6. Hepatic artery pseudoaneurysm following laparoscopic cholecystectomy

    International Nuclear Information System (INIS)

    The authors describe a hepatic pseudoaneurysm following laparoscopic cholecystectomy in a child. It arose from a hepatic artery that was ligated during surgery and was supplied by collaterals from the superior right branch. Because of the risk of hepatic infarction and recanalization of the pseudoaneurysm by new collaterals, the authors decided not to occlude the superior right branch, but to embolize the aneurysm itself with cyanoacrylate. Since the intra-arterial approach was not feasible, a transhepatic puncture was successfully performed. (orig.)

  7. Intriguing variations of the tibial arteries and their clinical implications

    OpenAIRE

    Jelev L; Georgiev GP; Atanasova M

    2011-01-01

    Unusual course and branching pattern of the tibial arteries were discovered during routine anatomical dissection of the right lower extremity of a 61-year-old female cadaver. The arteries of the crural region arose from the popliteal artery, as usual. However, the anterior tibial artery was hypoplastic and supplying the anterior calf muscles ended above the ankle joint. Instead, the posterior tibial artery gave off a large anterior branch, which crossed the lowest portion of the interosseous ...

  8. Doppler findings in a rare Coronary Artery Fistula

    OpenAIRE

    Jorns Carl; Jung Christian; Huhta James

    2007-01-01

    Abstract One of the primary forms of congenital anomalies of the coronary arteries is coronary artery fistula (CAF). It is defined as a direct communication between the coronary artery and any surrounding cardiac chamber or vascular structure, which bypasses the myocardial capillary bed. We present a newborn baby with a large coronary artery fistula connecting the left anterior descending (LAD) artery to the left ventricular (LV) apex. Associated cardiac abnormalities were found: a ventricula...

  9. Variant Branching Pattern of Axillary Artery: A Case Report

    OpenAIRE

    Swamy Ravindra Shantakumar; Mohandas Rao, K. G.

    2012-01-01

    During routine dissection of an approximately 50-year-old male cadaver for the undergraduate medical students at Melaka Manipal Medical College, Manipal University, Manipal, we came across a variation in branching pattern of right axillary artery. The second part of axillary artery gave rise to a common trunk which divided into the subscapular and lateral thoracic arteries. The third part of right axillary artery gave rise to anterior and posterior circumflex humeral arteries. Variations in t...

  10. Direct Axillary Arterial Cannulation Using Seldinger's Technique in Aortic Dissection

    OpenAIRE

    Do, Young Woo; Kim, Gun-Jik; Park, Il; Cho, Joon-Yong; Lee, Jong-Tae

    2011-01-01

    Background The axillary artery is frequently used for cardiopulmonary bypass, especially in acute aortic dissection. We have cannulated the axillary artery using a side graft or by directly using Seldinger's technique. The purpose of this study was to assess the technical problems and complications of both cannulation techniques. Materials and Methods From January 2003 to December 2009, 53 patients underwent operations using the axillary artery for arterial cannulation. The axillary artery wa...

  11. Hepatocellular carcinoma with extensive hepatic artery injury: transcatheter arterial chemoembolization through collaterals after coil embolizatoin of gastric arteries

    Energy Technology Data Exchange (ETDEWEB)

    Kim, Gab Choul; Yoon, Hyun Ki; Hwang, Jae Cheol; Lee, Duck Hee; Song, Ho Young; Suh, Dong Jin; Lee, Yung Sang; Chung, Young Hwa; Sung, Gyu Bo [Ulsan Univ. College of Medicine, Seoul (Korea, Republic of); Ko, Ki Young [Catholic Univ. College of Medicine, Seoul (Korea, Republic of)

    1999-09-01

    To evaluate the efficacy and safety of transcatheter arterial chemoembolization(TACE) after coil embolization of the gastroduodenal artery in hepatocellular carcinoma cases with multiple collateral arteries caused by proper hepatic artery injury. Between March 1997 and November 1998, a prospective trial of transcatheter arterial chemoembolization (TACE) was performed through collaterals from the gastroduodenal artery of 31 hepatocellular carcinoma patients with extensive proper hepatic artery injury due to repeated TACE. Among this number, 16 (group A) underwent TACE after coil embolization of the right gastric and gastroduodenal artery. The other 15 patients (group B) underwent TACE without coil embolization. The two groups had the same TNM stage and Clild-Pugh status. During the follow-up period, group A underwent additional TACE 3.3 times, and group B 2.8 times. The therapeutic effect of TACE was evaluated with computed tomography and by measuring alpha-fetoprotein levels. Complications were evaluated by means of gastrofibroscopy, laboratory data, and evaluation of the patients' clinical symptoms. The results obtained after six months and one year were compared within and between each group. At six months follow-up, CT findings had improved or were unchanged in 11 patients(69 %) in group A, and four patients(27 %) in group B(p = 0.032). In ten patients in each group, the level of alpha-fetoprotein was above 200 ng/ml. Its level was decreased in five patients(50 %) and three patients(30 %), respectively. The six-month survival rate was 81 % (13/16) in group A and 67% (10/15) in group B (p 0.43), while the one-year survival figures for these two groups were 50 % (8/16) and 20 % (3/15), respectively(p = 0.135). In group A, the CT findings were steady in five out of eight patients(63 %), while in groupB, CT findings showed that tumors with increased alpha-fetoprotein levels had increased in size and/or number. In group A, it was found that in two (33 %) of six

  12. Endovascular stenting for vertebrobasilar artery stenosis

    International Nuclear Information System (INIS)

    Objective: To summarize the experiences in endovascular stenting for vertebrobasilar artery stenosis, and to discuss its indications, technique, and perioperative management. Methods: Twenty cases presented with recurrent transient ischemic attack or with the history of infarction of posterior circulation territory. Thirteen cases complained of dizziness or headache. The locations of the stenoses were originated at vertebral artery in 13 cases, extracranial segment of vertebral artery in 3 cases, intracranial segment of vertebral artery in 5 cases, and basilar artery in 12 cases. All stenoses were more than 70% in diameter, with 2-12 mm in length. Balloon expended stents (BX, AVES670, EXPRESS, BIODIVESO) were introduced across the stenosis with the support of guide wire. Stents were deployed by inflation of the balloon slowly. Results: There were no procedural and periprocedural complications, and angiographic results showed that the stenoses returned to normal size in 29 cases, while reduced by more than 80% in 4 cases. The patients were asymptomatic and neurologically intact at the clinical follow-up for 3-10 months. Ten cases were followed by angiography, and there was no restenosis. Conclusion: Endovascular stenting for vertebrobasilar artery stenosis is effective and safe. But long-term results need further investigation

  13. Idiopathic Arterial Calcification of Infancy: Case Report.

    Science.gov (United States)

    Attia, Tarek Hamed; Abd Alhamed, Mohamed Maisara; Selim, Mohamed Fouad; Haggag, Mohamed Salah; Fathalla, Diaa

    2015-11-01

    Idiopathic arterial calcification of infancy is a rare autosomal recessive disease, characterized by deposition of calcium along the internal elastic membrane of arteries, accompanied by fibrous thickening of the intima which causes luminal narrowing. Here we are reporting a case of idiopathic arterial calcification of infancy in a Saudi female newborn of non-consanguineous pregnant woman who had polyhydramnios. The newborn baby had severe respiratory distress, systemic hypertension and persistent pulmonary hypertension of newborn. She was admitted to Neonatal Intensive Care Unit, where she was ventilated and proper treatment was provided. Molecular genetic testing was positive for mutations of ectonucleotide pyrophosphatase/phosphodiesterase1 gene which is reported in 80% of cases of Idiopathic arterial calcification of infancy. The baby died at about 5 month of age because of myocardial ischemia and cardiorespiratory arrest. Idiopathic Arterial Calcification of Infancy should be considered in any newborn who presented with persistent pulmonary hypertension of newborn, severe systemic hypertension and echogenic vessels on any radiological study. Calcifications of large and medium-sized arteries are important diagnostic finding. PMID:27252793

  14. How to manage an arterial catheter.

    Science.gov (United States)

    Parry, Andrew; Higginson, Ray

    2016-03-16

    Rationale and key points This article provides nurses with information on the safe and effective use and management of arterial catheters, the gold standard for accurate blood pressure measurement and routine serial blood gas sampling in critical care. Arterial catheters are used when real-time blood pressure monitoring is required, such as when there is a risk of significant blood loss. ▶ Arterial catheters provide real-time blood pressure monitoring, enabling rapid identification of changes in blood pressure and guiding fluid resuscitation. ▶ Arterial catheters can be used to take blood samples without having to perform multiple arterial or venous punctures. Reflective activity Clinical skills articles can help update your practice and ensure it remains evidence based. Apply this article to your practice. Reflect on and write a short account of: 1. How this article will change your practice when managing a patient with an arterial catheter. 2. Any further learning needs you have identified. Subscribers can upload their reflective accounts at: rcni.com/portfolio . PMID:26982866

  15. Microsurgical anatomy of the middle cerebral artery

    Directory of Open Access Journals (Sweden)

    Pai S

    2005-01-01

    Full Text Available Background: The microsurgical anatomy of the middle cerebral artery (MCA is of particular interest to the cerebrovascular surgeon. The purpose of this study was to define the microsurgical anatomy of the MCA and its various branches in the Indian population. Methods: Ten MCAs were studied from five cadaveric brain specimens. The authors studied the outer diameter, length, branches, perforators and site of these on the main trunk (M1, the division of the main trunk, the secondary trunks and their various cortical branches using the operating microscope under 5-20x magnification. Results: The outer diameter of the MCA main trunk ranges from 2.5 to 4 mm with a mean of 3.35 mm. The superolateral branches consisted of polar temporal artery and anterior temporal artery that had a common origin and sometimes the uncal artery or the accessory uncal artery. Perforators or lenticulostriate arteries were seen in the inferomedial surface all along the length of M1. Eight bifurcations and two trifurcations were noted. Cortical branches and their origin are discussed. Conclusion: Although the microsurgical anatomy of the MCA in Indian population correlated with the findings in the western literature, some structural and statistical variations were noted.

  16. Analysis, reconstruction and manipulation using arterial snakes

    KAUST Repository

    Li, Guo

    2010-01-01

    Man-made objects often consist of detailed and interleaving structures, which are created using cane, coils, metal wires, rods, etc. The delicate structures, although manufactured using simple procedures, are challenging to scan and reconstruct. We observe that such structures are inherently 1D, and hence are naturally represented using an arrangement of generating curves. We refer to the resultant surfaces as arterial surfaces. In this paper we approach for analyzing, reconstructing, and manipulating such arterial surfaces. The core of the algorithm is a novel deformable model, called arterial snake, that simultaneously captures the topology and geometry of the arterial objects. The recovered snakes produce a natural decomposition of the raw scans, with the decomposed parts often capturing meaningful object sections. We demonstrate the robustness of our algorithm on a variety of arterial objects corrupted with noise, outliers, and with large parts missing. We present a range of applications including reconstruction, topology repairing, and manipulation of arterial surfaces by directly controlling the underlying curve network and the associated sectional profiles, which are otherwise challenging to perform. © 2010 ACM.

  17. Idiopathic aneurysm of pulmonary artery

    Energy Technology Data Exchange (ETDEWEB)

    Pacheco, Julio B. Cota; Pimentel, Patricia N.; Knust, Beatriz S., E-mail: jcota@uol.com.br [Clinica de Cardiologia Cota Pacheco, Mogi das Cruzes, SP (Brazil)

    2015-07-15

    Because it is a very rare isolated lesion, we decided to present this case of idiopathic pulmonary artery aneurysm (IPAA) and review the cases published in the literature in order to correlate our clinical and imaging findings, as well as management based on patient data. IPAA was first described in a case of autopsy by Bristowe in 1860 and later in 1947 by Deterling and Claggett, whose prevalence was lower than eight to one hundred thousand. Although the use of diagnostic imaging methods has been applied in a very large population in recent decades, this lesion has been most often described in postmortem examinations. Therefore, it is important to be aware of possible clinical symptoms, at times non-specific, as well as the signs on imaging studies. In this study, therefore, the report of a case of an asymptomatic patient whose diagnosis was done through color Doppler echocardiography in a routine test in 2012, later confirmed by simple chest computed tomography (chest CT) and cardiac catheterization as IPAA and its branches. We discussed the literature available and the possibilities for treatment and the use of color Doppler echocardiography as an initial diagnostic tool for such a rare and intriguing disease. (author)

  18. Idiopathic aneurysm of pulmonary artery

    International Nuclear Information System (INIS)

    Because it is a very rare isolated lesion, we decided to present this case of idiopathic pulmonary artery aneurysm (IPAA) and review the cases published in the literature in order to correlate our clinical and imaging findings, as well as management based on patient data. IPAA was first described in a case of autopsy by Bristowe in 1860 and later in 1947 by Deterling and Claggett, whose prevalence was lower than eight to one hundred thousand. Although the use of diagnostic imaging methods has been applied in a very large population in recent decades, this lesion has been most often described in postmortem examinations. Therefore, it is important to be aware of possible clinical symptoms, at times non-specific, as well as the signs on imaging studies. In this study, therefore, the report of a case of an asymptomatic patient whose diagnosis was done through color Doppler echocardiography in a routine test in 2012, later confirmed by simple chest computed tomography (chest CT) and cardiac catheterization as IPAA and its branches. We discussed the literature available and the possibilities for treatment and the use of color Doppler echocardiography as an initial diagnostic tool for such a rare and intriguing disease. (author)

  19. PSEUDOANEURYSM OF INTERNAL ILIAC ARTERY

    Directory of Open Access Journals (Sweden)

    Seema Khanna

    2014-04-01

    Full Text Available An unusual cause of vaginal beeding after total abdominal hysterectomy is being reported. Histopathology revealed adenomyosis uteri and bilateral ovarian cyst. On examination there was a single lump in the hypogastrium and left iliac fossa. Auscultation revealed a faint continuous hum. On digital rectal examination, a bulge was felt, while per vaginum examination revealed mucosal congestion and bulging of mucosa. Ultrasound revealed a mass posterior to the urinary bladder. Duplex study demonstrated the yin-yang sign suggestive of a pseudo-aneurysm .CT Angiography was confirmatory and demonstrated a pseudoaneurysm arising from the left internal iliac artery. Patient underwent surgery.Postoperative period was uneventful . The commonest cause of IIA aneurysm is atherosclerosis. Other causes are arteritis ,collagen vascular disease, infection, trauma. An important subgroup is young females, who have undergone difficult delivery, forceps delivery or caesarian section or abdominal hysterectomy IIA aneurysms are usually discovered incidentally on pelvic imaging for any other indication. Surgery is the mainstay of treatment but endovascular procedures are gaining ground . [Natl J Med Res 2014; 4(2.000: 181-182

  20. Calculation of arterial wall temperature in atherosclerotic arteries: effect of pulsatile flow, arterial geometry, and plaque structure

    Directory of Open Access Journals (Sweden)

    Kim Taehong

    2007-03-01

    Full Text Available Abstract Background This paper presents calculations of the temperature distribution in an atherosclerotic plaque experiencing an inflammatory process; it analyzes the presence of hot spots in the plaque region and their relationship to blood flow, arterial geometry, and inflammatory cell distribution. Determination of the plaque temperature has become an important topic because plaques showing a temperature inhomogeneity have a higher likelihood of rupture. As a result, monitoring plaque temperature and knowing the factors affecting it can help in the prevention of sudden rupture. Methods The transient temperature profile in inflamed atherosclerotic plaques is calculated by solving an energy equation and the Navier-Stokes equations in 2D idealized arterial models of a bending artery and an arterial bifurcation. For obtaining the numerical solution, the commercial package COMSOL 3.2 was used. The calculations correspond to a parametric study where arterial type and size, as well as plaque geometry and composition, are varied. These calculations are used to analyze the contribution of different factors affecting arterial wall temperature measurements. The main factors considered are the metabolic heat production of inflammatory cells, atherosclerotic plaque length lp, inflammatory cell layer length lmp, and inflammatory cell layer thickness dmp. Results The calculations indicate that the best location to perform the temperature measurement is at the back region of the plaque (0.5 ≤ l/lp ≤ 0.7. The location of the maximum temperature, or hot spot, at the plaque surface can move during the cardiac cycle depending on the arterial geometry and is a direct result of the blood flow pattern. For the bending artery, the hot spot moves 0.6 millimeters along the longitudinal direction; for the arterial bifurcation, the hot spot is concentrated at a single location due to the flow recirculation observed at both ends of the plaque. Focusing on the

  1. Superselective intra-arterial infusion via the superficial temporal artery and occipital artery for gingival carcinoma of the mandible. Simultaneous catheter placement to the maxillary artery and facial artery

    International Nuclear Information System (INIS)

    Superselective intra-arterial infusion via the superficial temporal artery (STA) has become useful for oral cancer. Approaching via the occipital artery (OA) enables superselective intra-arterial infusion when catheter placement via the STA is impossible. Therefore, simultaneous catheter placement via the STA and OA is possible. We report a surgical method of simultaneous catheter placement via the STA and OA to achieve retrograde superselective intra-arterial infusion for gingival carcinoma of the mandible. Preoperatively, three-dimensional computed tomography angiography was performed to identify the route of the external carotid artery and branches such as the STA, OA, maxillary artery, and facial artery (FA). Thirteen patients with mandibular gingival cancer underwent catheter placement via the STA and OA under local anesthesia. Catheter placement via the STA and OA was superselectively successful in all the patients. The mean operating time was 150.8 min. Catheter placed to the FA via the OA was dislocated during the treatment in one patient, and so the catheter was replaced. This method is useful to enable superselective intra-arterial chemotherapy to the whole gingival carcinoma of the mandible from the start of treatment compared with approaching via the STA. (author)

  2. Feasibility Study of Ex Ovo Chick Chorioallantoic Artery Model for Investigating Pulsatile Variation of Arterial Geometry.

    Directory of Open Access Journals (Sweden)

    Kweon-Ho Nam

    Full Text Available Despite considerable research efforts on the relationship between arterial geometry and cardiovascular pathology, information is lacking on the pulsatile geometrical variation caused by arterial distensibility and cardiomotility because of the lack of suitable in vivo experimental models and the methodological difficulties in examining the arterial dynamics. We aimed to investigate the feasibility of using a chick embryo system as an experimental model for basic research on the pulsatile variation of arterial geometry. Optical microscope video images of various arterial shapes in chick chorioallantoic circulation were recorded from different locations and different embryo samples. The high optical transparency of the chorioallantoic membrane (CAM allowed clear observation of tiny vessels and their movements. Systolic and diastolic changes in arterial geometry were visualized by detecting the wall boundaries from binary images. Several to hundreds of microns of wall displacement variations were recognized during a pulsatile cycle. The spatial maps of the wall motion harmonics and magnitude ratio of harmonic components were obtained by analyzing the temporal brightness variation at each pixel in sequential grayscale images using spectral analysis techniques. The local variations in the spectral characteristics of the arterial wall motion were reflected well in the analysis results. In addition, mapping the phase angle of the fundamental frequency identified the regional variations in the wall motion directivity and phase shift. Regional variations in wall motion phase angle and fundamental-to-second harmonic ratio were remarkable near the bifurcation area. In summary, wall motion in various arterial geometry including straight, curved and bifurcated shapes was well observed in the CAM artery model, and their local and cyclic variations could be characterized by Fourier and wavelet transforms of the acquired video images. The CAM artery model with

  3. Feeding Arteries of Primary Tongue Cancers on Intra-arterial Infusion Chemotherapy

    Energy Technology Data Exchange (ETDEWEB)

    Kamitani, Takeshi, E-mail: kamitani@radiol.med.kyushu-u.ac.jp [Kyushu University, Department of Clinical Radiology, Graduate School of Medical Sciences (Japan); Kawanami, Satoshi, E-mail: kawanami-01@mac.com [Kyushu University, Department of Molecular Imaging and Diagnosis, Graduate School of Medical Sciences (Japan); Asayama, Yoshiki, E-mail: asayama@radiol.med.kyushu-u.ac.jp; Matsuo, Yoshio, E-mail: yymatsuo@radiol.med.kyushu-u.ac.jp; Yonezawa, Masato, E-mail: ymasato@radiol.med.kyushu-u.ac.jp; Yamasaki, Yuzo, E-mail: yyama@radiol.med.kyushu-u.ac.jp [Kyushu University, Department of Clinical Radiology, Graduate School of Medical Sciences (Japan); Nagao, Michinobu, E-mail: minagao@radiol.med.kyushu-u.ac.jp [Kyushu University, Department of Molecular Imaging and Diagnosis, Graduate School of Medical Sciences (Japan); Yamanouchi, Torahiko, E-mail: tora0228@radiol.med.kyushu-u.ac.jp [Kyushu University, Department of Clinical Radiology, Graduate School of Medical Sciences (Japan); Yabuuchi, Hidetake, E-mail: h-yabu@med.kyushu-u.ac.jp [Kyushu University, Department of Health Sciences, Graduate School of Medical Sciences (Japan); Nakamura, Katsumasa, E-mail: nakam@radiol.med.kyushu-u.ac.jp [Kyushu University, Department of Clinical Radiology, Graduate School of Medical Sciences (Japan); Nakashima, Torahiko, E-mail: nakatora@qent.med.kyushu-u.ac.jp [Kyushu University, Department of Otorhinolaryngology, Graduate School of Medical Sciences (Japan); Honda, Hiroshi, E-mail: honda@radiol.med.kyushu-u.ac.jp [Kyushu University, Department of Clinical Radiology, Graduate School of Medical Sciences (Japan)

    2016-02-15

    PurposeTo evaluate the frequency and the predictive factor of each feeding artery on intra-arterial infusion chemotherapy (IAIC) in primary tongue cancer.Materials and MethodsWe retrospectively evaluated 20 patients who received IAIC for primary tongue cancer. The main and accompanying feeding arteries were identified on super-selective angiography of the branches of the external carotid artery. Tumor diameter, and extension to the contralateral side, tongue extrinsic muscles (TEMs), and lateral mesopharyngeal wall were determined based on magnetic resonance imaging or computed tomography findings.ResultsThe main feeding artery was the ipsilateral lingual artery (LA) in 15 of the 20 examined tumors and the contralateral LA in the other 5. Ten cancers had only one feeding artery, and multiple feeding arteries were detected in the remaining 10. Tumors >4 cm (n = 9), those with extension to the contralateral side (n = 13), and those with extension to TEMs (n = 15) were supplied by significantly larger numbers of feeding arteries compared to tumors without these features (P = 0.01, 0.049, and 0.02, respectively). The frequency of feeding from the contralateral LA was 64 % (9/14) and 17 % (1/6) in tumors with and without extension to the contralateral side, respectively. Feeding from a facial artery (FA) was not detected in tumors ≤4 cm, while 5 of the 9 (56 %) tumors >4 cm were supplied by a FA (P = 0.01).ConclusionA careful search for feeding arteries is required, especially in large tumors with extension to the contralateral side or to TEMs.

  4. Dynamic contrast-enhanced ultrasound and transient arterial occlusion for quantification of arterial perfusion reserve in peripheral arterial disease

    Energy Technology Data Exchange (ETDEWEB)

    Amarteifio, E., E-mail: erick.amarteifio@med.uni-heidelberg.de [University Hospital of Heidelberg, Department of Diagnostic and Interventional Radiology, Heidelberg (Germany); Department of Radiology, German Cancer Research Center, Heidelberg (Germany); Wormsbecher, S. [University Hospital of Heidelberg, Department of Diagnostic and Interventional Radiology, Heidelberg (Germany); Department of Radiology, German Cancer Research Center, Heidelberg (Germany); Krix, M. [University Hospital of Heidelberg, Department of Diagnostic and Interventional Radiology, Heidelberg (Germany); Department of Radiology, German Cancer Research Center, Heidelberg (Germany); Bracco Imaging Germany, Konstanz (Germany); Demirel, S. [University Hospital of Heidelberg, Department of Vascular Surgery, Heidelberg (Germany); Braun, S. [Department of Biostatistics, German Cancer Research Center, Heidelberg (Germany); Delorme, S. [Department of Radiology, German Cancer Research Center, Heidelberg (Germany); Boeckler, D. [University Hospital of Heidelberg, Department of Vascular Surgery, Heidelberg (Germany); Kauczor, H.-U. [University Hospital of Heidelberg, Department of Diagnostic and Interventional Radiology, Heidelberg (Germany); Weber, M.-A. [University Hospital of Heidelberg, Department of Diagnostic and Interventional Radiology, Heidelberg (Germany); Department of Radiology, German Cancer Research Center, Heidelberg (Germany)

    2012-11-15

    Objective: To quantify muscular micro-perfusion and arterial perfusion reserve in peripheral arterial disease (PAD) with dynamic contrast-enhanced ultrasound (CEUS) and transient arterial occlusion. Materials and methods: This study had local institutional review board approval and written informed consent was obtained from all subjects. We examined the dominant lower leg of 40 PAD Fontaine stage IIb patients (mean age, 65 years) and 40 healthy volunteers (mean age, 54 years) with CEUS (7 MHz; MI, 0.28) during continuous intravenous infusion of 4.8 mL microbubbles. Transient arterial occlusion at mid-thigh level simulated physical exercise. With time-CEUS-intensity curves obtained from regions of interest within calf muscles, we derived the maximum CEUS signal after occlusion (max) and its time (t{sub max}), slope to maximum (m), vascular response after occlusion (AUC{sub post}), and analysed accuracy, receiver operating characteristic (ROC) curves, and correlations with ankle-brachial index (ABI) and walking distance. Results: All parameters differed in PAD and volunteers (p < 0.014). In PAD, t{sub max} was delayed (31.2 {+-} 13.6 vs. 16.7 {+-} 8.5 s, p < 0.0001) and negatively correlated with ankle-brachial-index (r = -0.65). m was decreased in PAD (4.3 {+-} 4.6 mL/s vs. 13.1 {+-} 8.4 mL/s, p < 0.0001) and had highest diagnostic accuracy (sensitivity/specificity, 75%/93%) for detection of diminished muscular micro-perfusion in PAD (cut-off value, m < 5{approx}mL/s). Discriminant analysis and ROC curves revealed m, and AUC{sub post} as optimal parameter combination for diagnosing PAD and therefore impaired arterial perfusion reserve. Conclusions: Dynamic CEUS with transient arterial occlusion quantifies muscular micro-perfusion and arterial perfusion reserve. The technique is accurate to diagnose PAD.

  5. Typology of the arteries in the human scalenus region, with special reference to the accessory ascending cervical artery.

    OpenAIRE

    Su WD; Ohtsuka A; Taguchi T; Murakami T.

    2000-01-01

    The accessory ascending cervical artery (Murakami et al., 1996), which arises from the subclavian artery and ascends between the scalenus anterior and medius muscles, was studied in 87 Japanese adult cadavers (174 sides), with special attention being given to its origin, distribution, and relationship to other arteries at the cervical or scalenus region. In 154 sides (88.5%), the accessory ascending cervical artery was found to originate from the subclavian artery behind the scalenus anterior...

  6. La relación entre profesionales de enfermería y medicina: Una posible explicación de los resultados

    Directory of Open Access Journals (Sweden)

    Luis Felipe González Castro, MD

    2010-01-01

    Full Text Available En el ejercicio médico hay un sin número de relaciones. La relación entre el servicio de enfermería y el médico es tal vez la más constante y funcional. Estos actores se comunican por un método de presentación variable donde se incluye al paciente de acuerdo a las circunstancias. Por allí es donde se transmite el llamado de dolor, los sentimientos, una duda, una queja, una novedad, un diagnóstico, una orden; en fin, una verdadera forma de hacer medicina. En gran medida los resultados obtenidos por el personal de salud obedecen a labuena comunicación y a la pronta respuesta ante cierto problema. La relación médico-enfermería es quizás la columna vertebral de una buena atención en salud. Esta relación profesional no da cabida a torpezas; la hostilidad, el mal trabajo en equipo, los temores, la exagerada distancia, las ocultaciones, la mentira, las malas relacionespersonales, la desconfianza, el estrés, entre otros, son el gran enemigo de un elemental individuo, el paciente. Analizar que tan buena relación tenemos en este canal nos permite entender mejor el posible porqué de nuestros resultados. ______________________________________________________________________Several relationship styles emerge from the medical care context in hospital-based settings, with special regard to the care partnership between physicians and nurses. Nurses and doctors as health providers communicate among themselves by engaging in a process of self-disclosure mediated by the information related to their patients' conditions. Both address patients' needs, feelings, and illness-related concerns such as fears, preventions, requests, and coping skills. Also, they discuss their own doubts as well as outcomes and other resources needed to be assessed during the interventionprocess. Significant evidence has been found from health providers' perspective, demonstrating that open communication, as well as timing and active coping strategies, are crucial to

  7. LOS TRATADOS INTERNACIONALES Y SUS POSIBLES CONFLICTOS EN EL ORDEN INTERNO A LA LUZ DE LA CONSTITUCIÓN DE LA REPUBLICA BOLIVARIANA DE VENEZUELA

    Directory of Open Access Journals (Sweden)

    María Fátima Pinho de Oliveira

    2012-01-01

    Full Text Available This research is intended to perform an analysis of international treaties and possible conflicts in the internal order in light of the Constitution of the Bolivarian Republic of Venezuela, based on two (2 major theories underlying the application of international law and the law states. These theories are the Monist and Dualist, the first provides that domestic law and international law are two systems of identical legal or legal nature, because their purposes and audiences are the same. Indeed, the two legal systems have a source to an agreement or consensus of wills; the second, however, public international law and domestic law are two systems or State laws of different legal nature because they have different sources and recipients. If we analyze some articles on the Constitution of the Bolivarian Republic of Venezuela, we see that it holds no preference on any of the two (2 theories, but has a mixed theory, in some cases monistic theory applies, but other cases the dualistic theory.La presente investigación tiene como finalidad realizar un análisis sobre los tratados internacionales y sus posibles conflictos en el orden interno a la luz de la Constitución de la República Bolivariana de Venezuela, partiendo de dos (2 principales teorías que sustentan la aplicación del derecho internacional y el derecho interno de los estados. Dichas teorías son la Monista y la Dualista, la primera establece que el derecho interno y el derecho internacional son dos sistemas u ordenamientos jurídicos de idéntica naturaleza jurídica, porque sus funciones y destinatarios son los mismos. En efecto ambos sistemas jurídicos tienen como fuente un acuerdo o consenso de voluntades; la segunda, en cambio, el Derecho Internacional Público y el Derecho Interno Estatal son dos sistemas u ordenamientos jurídicos de naturaleza jurídica diferente porque tienen fuentes y destinatarios distintos. Si se analizan algunos artículos referidos en la Constitución de

  8. La Bixa orellana L como posible sustancia reveladora de placa dentobacteriana: a potential substance for detection of dentobacterial plaque Bixa orellana L:

    Directory of Open Access Journals (Sweden)

    Gemma Lauzardo García del Prado

    2009-06-01

    Full Text Available En la actualidad las plantas naturales se han convertido en una importante fuente de elaboración de medicamentos, lo que nos ha motivado a realizar una revisión bibliográfica sobre la Bixa orellana L. Este es un producto natural fácilmente asequible en nuestro medio por encontrarse ampliamente distribuido en nuestro territorio, y apoyándonos en sus ya conocidas propiedades de tinción en alimentos, surge la idea de su posible uso estomatológico como sustancia reveladora de placa dentobacteriana. Objetivo: ampliar conocimientos sobre las propiedades y uso de Bixa orellana L en los seres humanos. Método: se revisaron artículos originales y de revisión localizados mediante Pub-Med, Google, revistas internacionales y nacionales reconocidas. Conclusiones: se ha demostrado que la Bixa no provoca alteraciones patológicas en el ser humano y tiene importantes propiedades: antifúngicas, antipiréticas, antibacterianas, antiinflamatorias y antigonorreicas, entre otras, y se utiliza en la tinción de alimentos como: mantequilla, quesos y aceites. Con esta propuesta pretendemos incrementar las actividades de promoción y prevención de la caries dental y las periodontopatías, elevar el nivel de educación para la salud dental en nuestra población, disminuir los tratamientos curativos, prolongando así la salud de los dientes remanentes.At the present time natural plants become a significant drug manufacture source, thus, we made a bibliographic review on Bixa orellana L. This is a natural product easily accessible since it is fully distributed in our country, and due to its known dyeing properties in foods, arise the idea of its potential Stomatology use as a revealing substance of dentobacterial plaque. Objective: To expand our knowledges on the properties and use of Bixa orellana L in human being. Methods: We reviewed the original papers retrieved by Pub-Med, Google, and recognized international and national journals. Conclusions: It has been

  9. Typology of the arteries in the human scalenus region, with special reference to the accessory ascending cervical artery.

    Directory of Open Access Journals (Sweden)

    Su WD

    2000-12-01

    Full Text Available The accessory ascending cervical artery (Murakami et al., 1996, which arises from the subclavian artery and ascends between the scalenus anterior and medius muscles, was studied in 87 Japanese adult cadavers (174 sides, with special attention being given to its origin, distribution, and relationship to other arteries at the cervical or scalenus region. In 154 sides (88.5%, the accessory ascending cervical artery was found to originate from the subclavian artery behind the scalenus anterior muscle, and to branch out to the scalenus anterior and medius muscles as well as those entering the 5th and 6th intervertebral foramens along the 6th and 7th cervical nerves. This artery arose independently in 105 sides. The accessory ascending cervical artery issued off or formed a common trunk with the transverse cervical artery and/or costocervical trunk in 49 sides. In cases lacking the accessory ascending cervical artery, it was usually compensated for by the costocervial trunk and/or transverse cervical artery (18 sides. Common trunk formation with the vertebral, internal thoracic, or suprascapular arteries was not observed. The authors suggest that the accessory ascending cervical artery, the transverse cervical artery, and the costocervical trunk should be grouped into one arterial system, a system that may be a remnant of the precostal longitudinal anastomoses of intersegmental arteries of the dorsal aorta behind the scalenus anterior muscle.

  10. Giant Cavernous Aneurysm Associated with a Persistent Trigeminal Artery and Persistent Otic Artery

    Energy Technology Data Exchange (ETDEWEB)

    Zhang, Chang Wei; Xie, Xiao Dong; Yang, Zhi Gang; Wang, Chao Hua; You, Chao; Mao, Bo Yong; He, Min; Sun, Hong [West China Hospital, Sichuan University, Sichuan (China)

    2009-10-15

    Primitive trigeminal artery (PTA) and primitive otic artery (POA) is a very rare entity in adult life. We present a case of PTA and POA associated with a giant unruptured cavernous aneurysm in a 54-year-old woman. The PTA and the POA arose from the sac of the aneurysm directly, which greatly complicated endovascular therapy management

  11. Giant Cavernous Aneurysm Associated with a Persistent Trigeminal Artery and Persistent Otic Artery

    Science.gov (United States)

    Zhang, Chang-wei; Yang, Zhi-gang; Wang, Chao-hua; You, Chao; Mao, Bo-yong; He, Min; Sun, Hong

    2009-01-01

    Primitive trigeminal artery (PTA) and primitive otic artery (POA) is a very rare entity in adult life. We present a case of PTA and POA associated with a giant unruptured cavernous aneurysm in a 54-year-old woman. The PTA and the POA arose from the sac of the aneurysm directly, which greatly complicated endovascular therapy management. PMID:19721839

  12. Main pulmonary artery area limits exercise capacity in patients long-term after arterial switch operation

    NARCIS (Netherlands)

    Baggen, Vivan J M; Driessen, Mieke M P; Meijboom, Folkert J; Sieswerda, Gertjan Tj; Jansen, Nicolaas J G; van Wijk, Sebastiaan W H; Doevendans, Pieter A; Leiner, Tim; Schoof, Paul H; Takken, Tim; Breur, Johannes M P J

    2015-01-01

    OBJECTIVES: Despite excellent survival in patients after the arterial switch operation, reintervention is frequently required and exercise capacity is decreased in a substantial number of patients. This study relates right-sided imaging features in patients long-term after the arterial switch operat

  13. Congenital arteriovenous fistula between the internal mammary artery and the pulmonary artery

    OpenAIRE

    Serruys, Patrick; van Meurs-van Woezik, H

    1984-01-01

    textabstractThis is the fourth reported case of congenital arteriovenous fistula between the internal mammary artery and pulmonary artery. Precise and complete diagnostic evaluation is required to localize, delineate and appreciate the haemodynamic significance of this type of arteriovenous shunt. A brief review of the literature is given with suggestions for diagnosis.

  14. Unusual origin of the artery of Adamkiewicz from the fourth lumbar artery

    International Nuclear Information System (INIS)

    The main arterial supply of the dorso-lumbar spinal cord is usually derived from a single anterior radiculo-medullary artery called the artery of Adamkiewicz and referred to as having a middle or low location. In some cases, the artery origin is higher, and a vessel which arises in the lower part of the region supplements the supply of the anterior spinal artery. In the literature, those arteries have been described as arising from L3 upwards, and have never been previously described angiographically, to our knowledge, below this level, although Suh and Alexander and Gililan have mentioned this eventuality. Of the 4,000 spinal cord angiographies performed in our institution, we report three cases in which the fourth lumbar artery flows into the anterior spinal artery of the conus medullaris. This anatomical variant may explain the sometimes devastating post-operative neurological complications from a spinal cord infarction on surgery of the lumbar spine or the abdominal aorta below L3. (orig.)

  15. Unusual origin of the artery of Adamkiewicz from the fourth lumbar artery

    Energy Technology Data Exchange (ETDEWEB)

    Lo, D.; Vallee, J.N.; Spelle, L.; Cormier, E.; Chiras, J. [Service de Neuroradiologie Charcot, Hopital de la Salpetriere, Paris (France); Saillant, G. [Service de Chirurgie Orthopedique et de Traumatologie, Hopital de la Salpetriere, Paris (France); Rancurel, G. [Service D' urgences Cerebro-Vasculaires, Hopital de la Salpetriere, Paris (France)

    2002-02-01

    The main arterial supply of the dorso-lumbar spinal cord is usually derived from a single anterior radiculo-medullary artery called the artery of Adamkiewicz and referred to as having a middle or low location. In some cases, the artery origin is higher, and a vessel which arises in the lower part of the region supplements the supply of the anterior spinal artery. In the literature, those arteries have been described as arising from L3 upwards, and have never been previously described angiographically, to our knowledge, below this level, although Suh and Alexander and Gililan have mentioned this eventuality. Of the 4,000 spinal cord angiographies performed in our institution, we report three cases in which the fourth lumbar artery flows into the anterior spinal artery of the conus medullaris. This anatomical variant may explain the sometimes devastating post-operative neurological complications from a spinal cord infarction on surgery of the lumbar spine or the abdominal aorta below L3. (orig.)

  16. Percutaneous transluminal angioplasty of the superficial femoral artery by retrograde catheterization via the popliteal artery

    DEFF Research Database (Denmark)

    Tønnesen, K H; Sager, P; Karle, A; Henriksen, L; Jørgensen, B

    1988-01-01

    We report the results of 50 angioplasty procedures via the popliteal artery. A 3-year follow-up including control of blood pressures at ankle and toe levels show results comparable to reports in the literature. This new approach for angioplasty of the superficial femoral artery and eventually of ...

  17. Transcatheter Splenic Artery Occlusion for Treatment of Splenic Artery Steal Syndrome After Orthotopic Liver Transplantation

    International Nuclear Information System (INIS)

    Purpose: To review some aspects of the problem of splenic artery steal syndrome as cause of ischemia in transplanted livers and treatment by selective splenic artery occlusion. Materials and Methods: Eleven liver transplant patients from a group of 350 patients, nine men and two women,ranging in age from 40 years to 61 years (mean 52 years), presented with biochemical evidences of liver ischemia and failure, ranging from one to 60 days following orthotopic liver transplantation. Diagnosis of splenic artery steal syndrome was suspected by elevated enzymes, Doppler ultrasound and confirmed by celiac angiogram. Patients with confirmed hepatic artery thrombosis before angiography were excluded from the study. Embolization with Gianturco coils was performed. Results: All patients were treated by splenic artery embolization with Gianturco coils. The 11 patients improved clinically within 24 hours of the procedure with significant change in the biochemical and clinical parameters. Followup ranged from one month to two years. One of the 11 patient initially improved, but developed hepatic artery thrombosis within 24 hours of the embolic treatment,requiring surgical repair. Conclusion: Splenicartery steal syndrome following liver transplantation surgery can be diagnosed by celiac angiography, and effectively treated by splenic artery embolization with coils. Embolization is one of the treatments available, it is minimally invasive, and leads to immediate clinical improvement. Hepatic artery thrombosis is a possible complication of the procedure

  18. Femoral artery pressure measurement to predict the outcome of arterial surgery in patients with multilevel disease

    DEFF Research Database (Denmark)

    Faris, I; Tønnesen, K H; Agerskov, K;

    1982-01-01

    would persist. Measurement of the femoral artery pressure allows prediction of the toe and ankle pressure response to surgery to be made with sufficient accuracy to permit a preoperative decision to be made between the need for a single-level or a two-level arterial reconstruction: no patients who had...

  19. Catheterization of the Hepatic Artery Via the Left Common Carotid Artery in Rats

    International Nuclear Information System (INIS)

    The commonly used approach for rat hepatic artery catheterization is via the gastroduodenal artery, which is ligated after the procedure. A new method of rat hepatic artery catheterization via the left common carotid artery (LCCA) is described. The LCCA is repaired after catheterization. The catheterization procedures included the following: (1) opening the rat's abdominal cavity and exposing the portion of abdominal aorta at the level of the celiac trunk; (2) separating and exposing the LCCA; inserting a microguidewire and microcatheter set into the LCCA via an incision; after placement into the descending aorta, the microguidewire and microcatheter are maneuvered into the hepatic artery under direct vision; (3) after transcatheter therapy, the catheter is withdrawn and the incision at the LCCA is repaired. This technique was employed on 60 male Sprague-Dawley rats with diethylnitrosamine-induced liver cancer, using a 3F microguidewire and microcatheter set. Selective hepatic artery catheterization was successfully performed in 57 rats. One rat died during the operation and five rats died within 7 days after the procedure. It is envisaged that as experience increases, the catheterization success rate will increase and the death rate will decrease. A new approach for selective hepatic artery catheterization via the LCCA in rats is introduced, which makes repeat catheterization of this artery possible and allows large embolization particles to be delivered by using a 3F catheter

  20. Physical inactivity and arterial stiffness in COPD

    Directory of Open Access Journals (Sweden)

    Sievi NA

    2015-09-01

    Full Text Available Noriane A Sievi,1 Daniel Franzen,1 Malcolm Kohler,1,2 Christian F Clarenbach1 1Division of Pulmonology, University Hospital of Zurich, 2Zurich Center for Integrative Human Physiology, University of Zurich, Zurich, Switzerland Background: Arterial stiffness is an important predictor of cardiovascular risk besides classic cardiovascular risk factors. Previous studies showed that arterial stiffness is increased in patients with COPD compared to healthy controls and exercise training may reduce arterial stiffness. Since physical inactivity is frequently observed in patients with COPD and exercise training may improve arterial stiffness, we hypothesized that low daily physical activity may be associated with increased arterial stiffness. Methods: In 123 patients with COPD (72% men; mean [standard deviation] age: 62 [7.5] years; median [quartile] forced expiratory volume in 1 second 35 [27/65] %predicted, arterial stiffness was assessed by augmentation index (AI. Daily physical activity level (PAL was measured by an activity monitor (SenseWear Pro™ >1 week. The association between AI and PAL was investigated by univariate and multivariate regression analysis, taking into account disease-specific characteristics and comorbidities. Results: Patients suffered from moderate (35%, severe (32%, and very severe (33% COPD, and 22% were active smokers. Median (quartile PAL was 1.4 (1.3/1.5 and mean (standard deviation AI 26% (9.2%. PAL showed a negative association with AI (B=-9.32, P=0.017 independent of age, sex, blood pressure, and airflow limitation. Conclusion: In COPD patients, a higher PAL seems to favorably influence arterial stiffness and therefore may reduce cardiovascular risk. Clinical Trial Registration: www.ClinicalTrials.gov, NCT01527773 Keywords: activity monitor, airflow limitation, COPD, physical activity level