{"id":53792,"date":"2006-05-07T00:00:00","date_gmt":"2006-05-07T00:00:00","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/gradientes-de-presion-intraventricular-estimados-mediante-ecocardiografa%c2%ada-doppler\/"},"modified":"2006-05-07T00:00:00","modified_gmt":"2006-05-07T00:00:00","slug":"gradientes-de-presion-intraventricular-estimados-mediante-ecocardiografa%c2%ada-doppler","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/gradientes-de-presion-intraventricular-estimados-mediante-ecocardiografa%c2%ada-doppler\/","title":{"rendered":"Gradientes de presi\u00f3n intraventricular estimados mediante ecocardiograf\u00edadoppler"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Raquel Yotti Alvarez <\/strong><\/h2>\n<p>Antecedentes     desde hace m\u00e1s de veinte a\u00f1os se conoce que en el interior del ventr\u00edculo izquierdo existen diferencias regionales de presi\u00f3n. Los datos emp\u00edricos obtenidos en estudios de cateterismo cardiaco, junto con diferentes consideraciones te\u00f3ricas, sugieren que la diferencia de presi\u00f3n interventricular sist\u00f3lica (dpivs) que existe entre el \u00e1pex y el tracto de salida del ventr\u00edculo izquierdo est\u00e1 \u00edntimamente relacionada con el estado inotr\u00f3pico, y juega un relevante papel en la din\u00e1mica de la eyecci\u00f3n. Sin embargo, la necesidad de utilizar sofisticadas t\u00e9cnicas de cateterismo cardiaco para medir la dpivs, ha impedido que se profundice en los determinantes hemodin\u00e1micos de este fen\u00f3meno fisiol\u00f3gico y su potencial aplicaci\u00f3n cl\u00ednica. Recientemente, nuestro grupo ha desarrollado un nuevo m\u00e9todo ecocardiogr\u00e1fico que permite medir diferencias de presi\u00f3n entre cualquiera para de puntos en el interior de las c\u00e1maras cardiacas, con el \u00fanico requisito de poder interrogar el flujo con el cursor de doopler de forma coaxial. Este m\u00e9todo se basa en el post-procesado digital de im\u00e1genes de ecocardiograf\u00eda doppler-colo modo-m y, a diferencia de las t\u00e9cnicas habituales de ecocardiograf\u00eda doppler, no exige la existencia de un orificio restrictivo para calcular un gradiente de presi\u00f3n.  hip\u00f3tesis y objetivos     con esta nueva herramienta puede ser posible, por vez primera, medir la dpivs de forma exacta e incruenta, estudiar sus determinantes hemodin\u00e1micos y analizar su utilidad pr\u00e1ctica como \u00edndice de contractilidad. El presente trabajo fue dise\u00f1ado para comprobar estas hip\u00f3tesis, desde un abordaje multidisciplinar que incluy\u00f3 la realizaci\u00f3n de estudios experimentales, t\u00e9cnicos y cl\u00ednicos.  material y resultados  estudios experimentales     en primer lugar, en un modelo porcino experimental, se confirm\u00f3 la exactitud del nuevo m\u00e9todo ecocardiogr\u00e1fico mediante comparaci\u00f3n directa con las dpivs obtenidas simult\u00e1neament<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Gradientes de presi\u00f3n intraventricular estimados mediante ecocardiograf\u00edadoppler<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Gradientes de presi\u00f3n intraventricular estimados mediante ecocardiograf\u00edadoppler <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Raquel Yotti Alvarez <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Complutense de Madrid<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 05\/07\/2006<\/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>Javier Bermejo Thomas<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: Jes\u00fas Millan nu\u00f1ez cortes <\/li>\n<li>Carlos Callejo jos\u00e9 (vocal)<\/li>\n<li>joan Mar\u00eda Cinca cuscullola (vocal)<\/li>\n<li>candido Martin luengo (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Raquel Yotti Alvarez Antecedentes desde hace m\u00e1s de veinte a\u00f1os se conoce que en el interior del [&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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