{"id":89739,"date":"2001-06-04T00:00:00","date_gmt":"2001-06-04T00:00:00","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/influencia-del-gradiente-de-presion-transestenotico-en-la-estimacion-de-la-reserva-coronaria\/"},"modified":"2001-06-04T00:00:00","modified_gmt":"2001-06-04T00:00:00","slug":"influencia-del-gradiente-de-presion-transestenotico-en-la-estimacion-de-la-reserva-coronaria","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/ciencias-medicas\/influencia-del-gradiente-de-presion-transestenotico-en-la-estimacion-de-la-reserva-coronaria\/","title":{"rendered":"Influencia del gradiente de presi\u00f3n transesten\u00f3tico en la estimaci\u00f3n de la reserva coronaria."},"content":{"rendered":"<h2>Tesis doctoral de <strong>  Flores Galaviz Augusto Alex Octavio <\/strong><\/h2>\n<p>El gradiente de presi\u00f3n transesten\u00f3tico (gpt) constituye la manifestaci\u00f3n hemodin\u00e1mica m\u00e1s inmediata de una estenosis coronaria. Dentro de la valoraci\u00f3n funcional de las estenosis, el gpt constituye la base de varias t\u00e9cnicas de determinaci\u00f3n de la reserva de flujo coronario (rfc). Partiendo de la determinaci\u00f3n directa de gpt mediante microsensores coronarios de presi\u00f3n, la presente tesis investiga la influencia del mismo en la determinaci\u00f3n de la rfc a partir de 1\/ el an\u00e1lisis digital de la angiograf\u00eda coronaria (reserva coronaria angiogr\u00e1fica, rca) y 2\/ las presiones intracoronarias en hiperemia m\u00e1xima (reserva fraccional de flujo, rff).  la investigaci\u00f3n se realiz\u00f3 en dos estudios con el denominador com\u00fan de medir de forma directa el gpt en arterias coronarias con estenosis en pacientes con cardipat\u00eda isqu\u00e9mica utilizando microsensores de presi\u00f3n intracoronarios. En el primer (n=51) se compar\u00f3 la medici\u00f3n directa de los gpt y la rfc obtenidos en forma directa mediante gu\u00eda de presi\u00f3n (gp) intracoronaria con los obtenidos mediante el sistema de angiograf\u00eda cuantitativa, identificando las variables cl\u00edncias, angiogr\u00e1ficas  y hemodin\u00e1micas que contribuyesen a la discrepancia entre los gpt reales y los derivados del an\u00e1lisis de la angiograf\u00eda. En el segundo trabajo (n=103) se estudi\u00f3 la influencia de las carcter\u00edsticas f\u00e1sicas del flujo coronario espec\u00edficas de las coronarias derecha e izquierda (cd y ci respectivamente) sobre el gpt utilizado enla rff, obtenido en base a presiones medias. Para ello se realizaron mediciones selectivas en la fase diast\u00f3lica del cilo card\u00edaco como elemento de referencia.  el primer trabajo revel\u00f3 que la rca sobrevalora el gpt (20.76+-18.57 mmhg, p=0.0001), haciendo que en c\u00e1lculos subsiguientes se valore de forma incorrecta la reserva coronaria, con mala correlaci\u00f3n entre la rca y la rff (r=0,49). En dichas sobrevaloraci\u00f3n la presencia de circulaci\u00f3n colateral ocult<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Influencia del gradiente de presi\u00f3n transesten\u00f3tico en la estimaci\u00f3n de la reserva coronaria.<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Influencia del gradiente de presi\u00f3n transesten\u00f3tico en la estimaci\u00f3n de la reserva coronaria. <\/li>\n<li><strong>Autor:<\/strong>\u00a0  Flores Galaviz Augusto Alex Octavio <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Complutense de Madrid<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 06\/04\/2001<\/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>Carlos Macaya Miguel<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: pedro Zarco gutierrez <\/li>\n<li>alfonso Medina fern\u00e1ndez (vocal)<\/li>\n<li>arturo Cortina llosa (vocal)<\/li>\n<li> Martinez rios marco Antonio (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Flores Galaviz Augusto Alex Octavio El gradiente de presi\u00f3n transesten\u00f3tico (gpt) constituye la manifestaci\u00f3n hemodin\u00e1mica m\u00e1s inmediata [&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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