{"id":80072,"date":"2018-03-09T23:25:58","date_gmt":"2018-03-09T23:25:58","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/blind-source-separation-with-prior-source-knowledge-for-the-analysis-of-atrial-tachyarrythmias-signal-modelling-estimation-and-validation\/"},"modified":"2018-03-09T23:25:58","modified_gmt":"2018-03-09T23:25:58","slug":"blind-source-separation-with-prior-source-knowledge-for-the-analysis-of-atrial-tachyarrythmias-signal-modelling-estimation-and-validation","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/ciencias-medicas\/blind-source-separation-with-prior-source-knowledge-for-the-analysis-of-atrial-tachyarrythmias-signal-modelling-estimation-and-validation\/","title":{"rendered":"Blind source separation with prior source knowledge for the analysis of atrial tachyarrythmias. signal modelling, estimation and validation"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Francisco Sales Castells Ram\u00f3n <\/strong><\/h2>\n<p>La fibrilaci\u00f3n auricular (fa) es la arritmia cardiaca m\u00e1s frecuente, con una preValencia alrededor del 10% entre la poblaci\u00f3n mayor de 70 a\u00f1os, y se prev\u00e9 que continu\u00e9 aumentando a medida que la esperanza de vida se incremente. A pesar de ser la arritmia cardiaca m\u00e1s frecuente, los mecanismos exactos que la generan y perpet\u00faan todav\u00eda permanecen inciertos, y todos aquellos estudios que profundicen en el conocimiento de su naturaleza as\u00ed como de los efectos de los tratamientos cl\u00ednicos ser\u00e1n de gran importancia para el desarrollo de protocolos cl\u00ednicos que mejoren el diagn\u00f3stico y la indicaci\u00f3n del tratamiento m\u00e1s adecuado.  esta tesis doctoral se enmarca dentro del an\u00e1lisis no invasivo de taruiarritmias auriculares, en particular de la fa y flutter auricular (fla), a partir del estudio del electrocardiograma de superficie (ecg). Para caracterizar correctamente estas arritmias, adem\u00e1s de estudiar la actividad ventricular resulta de vital importancia analizar la actividad auricular (aa), ya que es precisamente en las aur\u00edculas donde se genera y desencadena esta patolog\u00eda.  no obstante, cabe enfatizar que el an\u00e1lisis de la aa a partir del ecg no es una operaci\u00f3n trivial, debido a que la aa resulta enmascarada por la mayor amplitud del qrs-t y el ruido. Por tanto, un procedimiento capaz de extraer la aa de forma exclusiva y sin interferencias, sobretodo del complejo qrs-t, es esencial.  A lo largo de los \u00faltimos a\u00f1os se han propuesto en la literatura cient\u00edfica distintas t\u00e9cnicas de estimaci\u00f3n y an\u00e1lisis de la aa, donde esta tesis doctoral supone una nueva aportaci\u00f3n en esta direcci\u00f3n. Esta tesis tiene como objetivo principal el desarrollo de t\u00e9cnicas de estimaci\u00f3n de la aa en registro de ecg, a partir de un modelo de separaci\u00f3n ciega de fuentes (bss). Mediante estos algoritmos es posible separar la onda auricular de las componentes ventriculares a partir de un an\u00e1lisis estad\u00edstico de la se\u00f1al multidimensio<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Blind source separation with prior source knowledge for the analysis of atrial tachyarrythmias. signal modelling, estimation and validation<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Blind source separation with prior source knowledge for the analysis of atrial tachyarrythmias. signal modelling, estimation and validation <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Francisco Sales Castells Ram\u00f3n <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Polit\u00e9cnica de Valencia<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 24\/05\/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>Jos\u00e9 Millet Roig<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: pablo Laguna lasaosa <\/li>\n<li>Luis Castedo ribas (vocal)<\/li>\n<li>leif Sornmo (vocal)<\/li>\n<li>Francisco Javier Chorro gasc\u00f3 (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Francisco Sales Castells Ram\u00f3n La fibrilaci\u00f3n auricular (fa) es la arritmia cardiaca m\u00e1s frecuente, con una preValencia [&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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