{"id":61178,"date":"2018-03-09T22:49:03","date_gmt":"2018-03-09T22:49:03","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/estudio-y-cuantificacion-de-la-dispersion-de-la-repolarizacion-ventricular-cardiaca-a-traves-de-la-onda-t-en-la-senal-electrocardiografica\/"},"modified":"2018-03-09T22:49:03","modified_gmt":"2018-03-09T22:49:03","slug":"estudio-y-cuantificacion-de-la-dispersion-de-la-repolarizacion-ventricular-cardiaca-a-traves-de-la-onda-t-en-la-senal-electrocardiografica","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/instrumentos-medicos\/estudio-y-cuantificacion-de-la-dispersion-de-la-repolarizacion-ventricular-cardiaca-a-traves-de-la-onda-t-en-la-senal-electrocardiografica\/","title":{"rendered":"Estudio y cuantificacion de la dispersion de la repolarizaci\u00f3n ventricular cardiaca a trav\u00e9s de la onda t en la se\u00f1al electrocardiografica"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Daid Arini Pedro <\/strong><\/h2>\n<p>En la presente tesis doctoral se estudian t\u00e9cnicas para analizar y cuantificar a la repolarizaci\u00f3n ventricular (rv) cardiaca y a la dispersi\u00f3n de la repolarizaci\u00f3n ventricular (drv) a partir del electrocardiograma (ecg) de superficie. La drv consiste del gradiente ventricular generado por los diferentes tiempos de activaci\u00f3n y duraci\u00f3n del potencial de acci\u00f3n (ap) en cada regi\u00f3n del miocardio. En condici\u00f3n de normalidad, el m\u00fasculo cardiaco tiene una determinada drv o gradiente ventricular. Cuando los valores de drv se incrementan, superando los valores normales, se presenta un importante factor para el desarrollo de arritmias ventriculares. Generalmente la respuesta del coraz\u00f3n a determinados estados fisiopatol\u00f3gicos y\/o f\u00e1rmacos genera incremento de la drv, siendo \u00e9ste, un potencial sustrato para la g\u00e9nesis de arritmias ventriculares severas y\/o muerte s\u00fabita. Por otra parte, la manera m\u00e1s directa de estimar a la drv es a trav\u00e9s de t\u00e9cnicas invasivas mapeando las diferencias regionales de la rv en el interior del miocardio. como el objetivo de este trabajo de investigaci\u00f3n es analizar a la drv utilizando t\u00e9cnicas no invasivas, utilizamos el ecg de superficie y estudiamos diversos \u00edndices derivados de \u00e9ste; algunos ya existentes en la literatura y otros propuestos. Estos \u00edndices cuantifican los valores de la drv en condiciones normales y detectan incremento de la drv en condiciones patol\u00f3gicas. se trabajo midiendo y procesando se\u00f1ales del ecg de superficie obtenidas de un modelo de coraz\u00f3n in vitro de conejo. Tambi\u00e9n se utilizaron se\u00f1ales electrocardiogr\u00e1ficas provenientes de una base de datos de pacientes humanos, en la cual se registr\u00f3 la actividad el\u00e9ctrica cardiaca en condiciones normales y durante procedimiento de angioplastia coronaria. para obtener los ecg del coraz\u00f3n animal se dise\u00f1aron y construyeron dos sistemas in vitro. El primero asociado a un sistema de registro multiderivacional de 30 electrodos m\u00e1s las 12 deriva<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Estudio y cuantificacion de la dispersion de la repolarizaci\u00f3n ventricular cardiaca a trav\u00e9s de la onda t en la se\u00f1al electrocardiografica<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Estudio y cuantificacion de la dispersion de la repolarizaci\u00f3n ventricular cardiaca a trav\u00e9s de la onda t en la se\u00f1al electrocardiografica <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Daid Arini Pedro <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Zaragoza<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 31\/10\/2007<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h3>Direcci\u00f3n y tribunal<\/h3>\n<ul>\n<li><strong>Director de la tesis<\/strong>\n<ul>\n<li>Pablo Laguna Lasaosa<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: raimon Jan\u00e9 campos <\/li>\n<li>esther Pueyo paules (vocal)<\/li>\n<li>Jos\u00e9 Mar\u00eda Ferrero de loma-osorio (vocal)<\/li>\n<li>silvano Zanuso (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Daid Arini Pedro En la presente tesis doctoral se estudian t\u00e9cnicas para analizar y cuantificar a la [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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