{"id":41803,"date":"1999-01-01T00:00:00","date_gmt":"1999-01-01T00:00:00","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/analisis-de-complejidad-de-la-variabilidad-de-intervalos-caracteristicos-del-electrocardiograma\/"},"modified":"1999-01-01T00:00:00","modified_gmt":"1999-01-01T00:00:00","slug":"analisis-de-complejidad-de-la-variabilidad-de-intervalos-caracteristicos-del-electrocardiograma","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/matematicas\/analisis-de-complejidad-de-la-variabilidad-de-intervalos-caracteristicos-del-electrocardiograma\/","title":{"rendered":"Analisis de complejidad de la variabilidad de intervalos caracteristicos del  electrocardiograma."},"content":{"rendered":"<h2>Tesis doctoral de <strong> Raul Carvajal Valdes <\/strong><\/h2>\n<p>En esta tesis se aplica el an\u00e1lisis dimensional i en particular la dimensi\u00f3n de correlaci\u00f3n al estudio de las se\u00f1ales provenientes del electrocardiograma (ecg): la variabilidad del ritmo cardiaco (hrv) y las series rt. utilizando el m\u00e9todo de los surrogate data se demuestra que existe un determinismo de naturaleza no lineal en las series rr, mientras que las series rt presentan el comportamiento t\u00edpico de un sistema estoc\u00e1stico.  se revisa la metodolog\u00eda para calcular la dimensibon de \u00ab\u00bborrelaci\u00f3n (dc), estudiando cuidadosamente la sensibilidad de este \u00edndice al variar los diversos par\u00e1metros que han de definirse para su c\u00e1lculo. Se propone una nueva forma de hacer la estimaci\u00f3n de esta dimensi\u00f3n, utilizando un ajuste exponencial. derivado de esta metodolog\u00eda se introduce un nuevo \u00edndice dck, que ser\u00e1 \u00fatil para la clasificaci\u00f3n de pacientes.  utilizando la base de datos del instituto nacional de cardiolog\u00eda de polonia se analizan se\u00f1ales de pacientes con cardiomiopat\u00eda hipertr\u00f3fica (cmh) y sujetos sanos. En un estudio con 12 paciente cmh de alto riesgo de muerte s\u00fabita, 17 de bajo riesgo y 16 sujetos sanos, un \u00edndice de complejidad, el exponente de hurst, y el coeficiente de pearson, logran separar los sujetos sanos de los pacientes con cmh. Para diferenciar entre pacientes de alto y bajo riesgo se construye una funci\u00f3n discriminante utilizando la desviaci\u00f3n est\u00e1ndar de los intervalos rr, la dimensi\u00f3n de capacidad y la complejidad algormica.  buscando mejorar la discriminaci\u00f3n entre alto y bajo riesgo se aplica la metodolog\u00eda desarrollada para la dimensi\u00f3n de correlaci\u00f3n, estudiando un grupo de 16 pacientes, 8 de los cuales hab\u00edan presentado episodios de muerte s\u00fabita cardiaca y los otros 8 son enfermos cmh apareados a los anteriores por edad y sexo. Se demuestra que el \u00edndice dck es capaz de discriminar entre ambos grupos de riesgo.  utilizando la base de datos de la franz volhard k<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Analisis de complejidad de la variabilidad de intervalos caracteristicos del  electrocardiograma.<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Analisis de complejidad de la variabilidad de intervalos caracteristicos del  electrocardiograma. <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Raul Carvajal Valdes <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Polit\u00e9cnica de catalunya<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 01\/01\/1999<\/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>Montserrat Vallverd\u00fa Ferrer<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: pere Caminal magrans <\/li>\n<li>rafal Baranowski (vocal)<\/li>\n<li>andreas Voss (vocal)<\/li>\n<li> Diaz calavia e. j. (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Raul Carvajal Valdes En esta tesis se aplica el an\u00e1lisis dimensional i en particular la dimensi\u00f3n de [&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 center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"footnotes":""},"categories":[1890,332,15966,126,15596,3175,2489],"tags":[105625,105626,15967,14097,105624,105623],"class_list":["post-41803","post","type-post","status-publish","format-standard","hentry","category-ciencia-de-los-ordenadores","category-ciencias-tecnologicas","category-computacion-digital","category-matematicas","category-politecnica-de-catalunya","category-sistemas-de-control-medico","category-tecnologia-de-las-telecomunicaciones","tag-andreas-voss","tag-diaz-calavia-e-j","tag-montserrat-vallverdu-ferrer","tag-pere-caminal-magrans","tag-rafal-baranowski","tag-raul-carvajal-valdes"],"_links":{"self":[{"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/posts\/41803","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/comments?post=41803"}],"version-history":[{"count":0,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/posts\/41803\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/media?parent=41803"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/categories?post=41803"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/tags?post=41803"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}